Rules amendments
2009 NHRA RULES AMENDMENTS
2009 Rule Amendments (Posted 7/30/09) 
ADMINISTRATIVE PROCEDURES & APPEALS
SECTION 1
Page 26
1.6.3 Chassis Inspection
DELETE:
“Chassis inspection and certification is a service offered by NHRA, in express consideration and of and subject at all times to the following terms and conditions.”
ADD:
“Chassis inspection and certification is a service offered by NHRA, in express consideration and of and subject at all times to the following terms and conditions, in NHRA's sole and absolute discretion.”
RACE PROCEDURES
SECTION 2
Page 41
STAGING
DELETE:
“When staging in Super Stock, Stock, Super Comp, Super Gas, or Super Street categories, both contestants must activate their pre-stage lights before either may advance into the stage beams.”
REPLACE WITH:
“When staging in Super Stock, Stock, Super Comp, Super Gas, Super Street, or Competition Eliminator categories, both contestants must activate their pre-stage lights before either may advance into the stage beams.”
 
 
 
POINTS AND RELATED PROGRAMS
 
SECTION 3
 
Page 53-54
 
LOGO PLACEMENT
 
DELETE:
 
“In addition, no participant in an NHRA Full Throttle Drag Racing Series event may display on his or her driver uniform, team uniform, vehicle, transporter, trailer, or in any other way at the NHRA Full Throttle Drag Racing Series event site, any Full Throttle “Energy Drink” beverage name, mark, logo, or other indicia, unless such Energy Drink sponsorship was approved by NHRA under the terms of the “Grandfather Clause” announced in April 2008”
 
REPLACE WITH:
 
“In addition, no participant in an NHRA Full Throttle Drag Racing Series event may display on his or her driver uniform, team uniform, vehicle, transporter, trailer, or in any other way at the NHRA Full Throttle Drag Racing Series event site, any non-Full Throttle “Energy Drink” beverage name, mark, logo, or other indicia, unless such Energy Drink sponsorship was approved by NHRA under the terms of the “Grandfather Clause” announced in April 2008”
 
ET – SUPER PRO, PRO, & SPORTSMAN
SECTION 4A – ET
PAGE 59
ENGINE : 1
SUPERCHARGER, TURBOCHARGER
DELETE:
SUPERCHARGER, TURBOCHARGER
Permitted on gasoline, racing-gasoline, and alcohol burning cars.  Supercharger restraint system meeting SFI Spec 14.1 mandatory on Roots-type supercharger when alcohol is used as fuel.  High helix and screw-type supercharger permitted.  Screw-type supercharger – manifold burst panel meeting SFI Spec 23.1 (in addition to panel in supercharger) plus restraint system meeting SFI Spec 14.21 mandatory.  Supercharger restraint straps must be covered with a fire-resistant material.  The blower restraint straps and fuel lines must be installed such that when the restraint straps are fully extended no load is placed on any of the fuel lines.  See General Regulations 1:10.
REPLACE WITH :
Permitted on gasoline, racing-gasoline, and alcohol burning cars.  Supercharger restraint system meeting SFI Spec 14.1 mandatory on Roots-type supercharger when alcohol is used as fuel.  High helix, centrifugal and screw-type supercharger permitted.  Screw-type supercharger – manifold burst panel meeting SFI Spec 23.1 (in addition to panel in supercharger) plus restraint system meeting SFI Spec 14.21 mandatory.  Supercharger drive must be belt, NHRA-accepted chain driver or NHRA-accepted gear drive.  Supercharger restraint straps must be covered with a fire-resistant material.  The blower restraint straps and fuel lines must be installed such that when the restraint straps are fully extended no load is placed on any of the fuel lines.  Air-to-air or water-to-air intercoolers permitted on turbocharged and centrifugal supercharged vehicles.  See General Regulations 1:10.
ADVANCED ET
 
SECTION 4B - ADVANCED E.T.
 
Page 66
 
NITROUS OXIDE
 
DELETE:
 
“Nitrous oxide prohibited on supercharged or turbocharged engines.  See
General Regulations 1:6.”
 
REPLACE WITH:
 
“Nitrous oxide prohibited on supercharged or turbocharged engines, except when diesel fuel used.  See General Regulations 1:6.”
 
Page: 68
 
Support Group: 9
 
FIRE EXTINGUISHER SYSTEM
 
DELETE:
“Mandatory on (closed or open) bodied front-engine alcohol-burning or supercharged/turbocharged cars and on any rear-engine car with enclosed cockpit. Minimum 5-pound NHRA-accepted system. All front-engine open-bodied supercharged/turbocharged (gasoline or methanol) cars and supercharged alcohol cars (full-bodied or Funny Car). Minimum 20-pound NHRA-accepted system. See General Regulations 9:10 for accepted agents.”
 
REPLACE WITH:
 
“Minimum 5-pound NHRA accepted system mandatory on front engine open-bodied alcohol non-supercharged/turbocharged car and on any rear engine car with an enclosed cockpit.
Minimum 20-pound NHRA accepted system mandatory on all front engine open-bodied alcohol burning supercharged/turbocharged cars. See General Regulations 9:3 for accepted agents. “
 
DRIVER: 10
PROTECTIVE CLOTHING
Page 69
DELETE:
 
“For all open-bodied cars where the driver does not use an SFI 3.3 neck collar (driver who uses head and neck restraint system only), an SFI 3.3 head sock or SFI 3.3 skirted helmet mandatory. “
 
REPLACE WITH:
 
“An SFI  3.3 head sock or SFI 3.3 skirted helmet is required on all open-bodied cars or all cars 7.49 & quicker, where a neck collar is not used.”
 
TOP SPORTSMAN
 
SECTION 4C - TOP SPORTSMAN
 
Engine: 1
 
NITROUS OXIDE
 
Page 70
 
DELETE:
 
NITROUS OXIDE
 
“Permitted on non-supercharged or non-turbocharged entries only.”
(Note: amendment in Adv. ET will apply to Top Sportsman and Top Dragster)
 
DRIVETRAIN: 2
Transmission
Page 71
DELETE:
All entries with pressurized transmissions must have interior sheet metal tunnel isolating the driver’s compartment from the transmission.
ADD:
Any transmission may be used, however, vehicle must employ positive system to disengage from final drive. All automatic transmissions must have a neutral safety start switch and reverse lockout device. All pressurized transmissions must be isolated from the driver’s compartment see Body: 7; Floor. All pressurized units must utilize flexible hoses pressure tested to 300psi and be clearly labeled as passing the testing process or steel lines and AN fittings to connect with accessory coolers. A minimum 1/8-inch pipe connection using high-pressure line vent to overflow tank (minimum 1-pint capacity) is mandatory.
 
DRIVER: 10
PROTECTIVE CLOTHING
Page 75
Delete:
 
“however must be used with SFI Spec 3.3 head sock or SFI Spec 3.3 skirted helmet.”  (in first sentence)
 
ADD:
 
NECK COLLAR
 
“A head and neck restraint device/system is mandatory for any vehicle running 200 mph or faster. The device/system must meet SFI Spec 38.1 and must display a valid SFI label. The head and neck restraint device/system, when connected, must conform to the manufacturer’s mounting instructions, and it must be configured, maintained, and used in accordance with the manufacturer’s instructions. Modification of the device is prohibited.   Neck collar meeting SFI Spec 3.3 mandatory for all other cars. A head and neck restraint device can be used with, or without, a neck collar; when a neck collar is not used, an SFI 3.3 head sock or SFI Spec 3.3 skirted helmet is required.”
 
TOP DRAGSTER
 
Section 4D - Top Dragster
 
Page 75
 
Minimum Weights
 
DELETE ALL:
MINIMUM WEIGHT:
"Small-block dragster
Naturally aspirated: 1,450 pounds
Nitrous assisted: 1,550 pounds
Supercharged or Turbocharged: 1,650 pounds
Big-block dragster
Naturally aspirated: 1,500 pounds
Nitrous assisted: 1,700 pounds
Supercharged or Turbocharged: 1,800 pounds
Small-block altered
Naturally aspirated: 1,600 pounds
Nitrous assisted: 1,700 pounds
Supercharged or Turbocharged: 1,800 pounds
Big-block altered
Naturally aspirated: 1,700 pounds
Nitrous assisted: 1,900 pounds
Supercharged or Turbocharged: 2,000 pounds
4 or 6 Cylinder vehicles
Naturally aspirated: 1,400 pounds
Nitrous assisted: 1,500 pounds
Supercharged or Turbocharged: 1,600 pounds”
 
REPLACE WITH:
 
“Small-block dragster or Altereds
Naturally aspirated: 1,450 pounds
Nitrous assisted: 1,550 pounds
Supercharged or Turbocharged: 1,650 pounds
Big-block dragsters or Altereds
Naturally aspirated: 1,500 pounds
Nitrous assisted: 1,700 pounds
Supercharged or Turbocharged: 1,800 pound
4 or 6 Cylinder dragsters or Altereds
Naturally aspirated: 1,400 pounds
Nitrous assisted: 1,500 pounds
Supercharged or Turbocharged: 1,600 pounds”
 
ENGINE: 1
 
Supercharger
 
Page 76
 
DELETE:
 
(Deleted 12/12/08)
All supercharged entries may utilize a 14-71 (or smaller) standard or hi-helix supercharger. Screw supercharger prohibited. All front engine cars must have a SFI 14.2 or 14.3 Supercharger Restraint with approved bag from same manufacturer with the restraint straps and bag covered with fire resistant material. Rear engine cars must have a SFI 14.1, 14.2 or 14.3 Supercharger Restraint. Belt guards shielding both fuel and oil lines are mandatory. The blower restraint straps and fuel lines must be installed such that when the restraint straps are fully extended no load is placed on any of the fuel lines. Aluminum studs (supercharger-to-manifold) mandatory. All supercharged dragsters must utilize a torque converter assisted transmission.  See General Regulations 1:10, 1:11.
ADD:
 
(Amendment 12/12/08)
Use of high-helix supercharger permitted.  Screw-type superchargers permitted.  Screw-type supercharger must meet SFI Spec 34.1 and be re-inspected by the manufacturer every three years.  Manifold burst panel meeting SFI Spec 23.1 (in addition to panel in supercharger) plus restraint system meeting SFI Spec 14.21 mandatory on all screw-type superchargers.  Front engine cars must use a SFI Spec 14.2 or 14.3 supercharger restraint.  Rear engine cars must have SFI Spec 14.1, 14.2 or 14.3 supercharger restraint.  Supercharger restraint straps must be covered with a fire-resistant material.  The blower restraint straps and fuel lines must be installed such that when the restraint straps are fully extended no load is placed on any of the fuel lines.  See General Regulations 1:10.
All supercharged dragsters must utilize a torque converter assisted transmission.
 
DRIVETRAIN: 2
 
Page 76
 
ADD:
 
DRIVETRAIN: 2
 
“Clutchless transmissions are limited to five forward gears; aftermarket planetary limited to three forward gears.”
 
INTERIOR: 6
 
UPHOLSTERY
 
Page 77
 
DELETE:
 
“Mandatory if metallic seat is used.  See General Regulations 6:2.”
 
REPLACE WITH:
 
“Optional.  For all front-engine open-bodied vehicles supercharged or turbocharged (gasoline- or methanol-burning), a flame-retardant material-covered seat is mandatory.”
 
SUPPORT GROUP: 9
 
FIRE EXTINGUISHER SYSTEM
 
Page 78
 
DELETE:
 “Mandatory on front-engine alcohol burning or supercharged/turbocharged cars and on any rear-engine car with enclosed cockpit. Minimum 5-pound NHRA-accepted system. All frontengine open-bodied supercharged/turbocharged cars, minimum 20-pound NHRA-accepted system. Safety pins must be red flagged. See General Regulations 9:3 for accepted agents.”
REPLACE WITH:
“Minimum 5-pound NHRA accepted system mandatory on front engine open-bodied alcohol non-supercharged/turbocharged car and on any rear engine car with an enclosed cockpit.
Minimum 20-pound NHRA accepted system mandatory on all front engine open-bodied alcohol burning supercharged/turbocharged cars. See General Regulations 9:3 for accepted agents. “
 
DRIVER: 10
 
HELMET
 
Page 78
 
DELETE:
“Drivers of all cars must use a full-face Snell SA2000 or SA2005 or SFI Spec 31.2A helmet with shield mandatory (goggles prohibited).”
 
REPLACE WITH:
“For all open-bodied naturally aspirated gasoline- or methanol-burning cars, a full-face Snell M2000, M2005, K2005, SA2000, SA2005, SFI 31.2A or 41.2A mandatory; shield mandatory (goggles prohibited).  See General Regulations 10:7.
For all open-bodied front-engine or rear-engine supercharged, turbocharged, or nitrous cars, a full-face Snell SA2000, SA2005, or SFI 31.2A helmet and shield mandatory (goggles prohibited).”
This is the same as Advanced ET (page 68) applications.
 
SUPER STREET
 
Section 5 – Super Street
 
ENGINE: 1
 
FUEL
 
Page 92
 
DELETE:
“Nitrous oxide prohibited”
 
REPLACE WITH:
“Nitrous oxide prohibited, except on diesel-turbocharged engines”
 
SUPER GAS
 
Section 6 – Super Street
 
ENGINE: 1
 
Page 98
 
ADD:
“Nitrous oxide prohibited, except on diesel-turbocharged engines”
 
SUPER COMP
 
Section 6 – Super Comp
 
ENGINE: 1
 
Page 100
 
ADD:
 
“Nitrous oxide prohibited, except on diesel-turbocharged engines”
 
STOCK
 
Section 8A - STOCK
Engine: 1
 
Cylinder Heads
 
Page 104
 
Add to end of fourth sentence: Runner volumes may not exceed the current Super Stock cylinder head volumes as listed on www.NHRA.com.
 
Regardless of the poured volume measurement, any modifications to intake or exhaust runners prohibited. Any evidence of modifications from the original castings will be grounds for disqualifications. Final decision at the discretion of the Technical Services Department.
 
Add to eleventh sentence after “The following are prohibited:” Spark plug adaptors,
 
Pistons
 
Page 106
 
Add to end of fourth sentence: or gas porting.
 
 
 
SUPER STOCK
 
Section 9A - Super Stock
 
Engine: 1
 
Cylinder Heads
 
Page 114
 
Add to end of sixth sentence: “Spark plug adaptors prohibited.”
 
Section 9A - Super Stock
 
ENGINE: 1
 
OIL PUMP 
 
Page 116
 
DELETE:
 
“Stock, OEM, or OEM-type aftermarket oil pump permitted. Oil pump location, oil pump drive, and complete oiling system must remain as originally produced, except for additional internal plumbing ( i.e. rocker shaft, etc.), which is permitted.  Accumulator permitted.  Additional external plumbing (except for accumulator and remote oil filter in Super Stock GT) prohibited.Additional external plumbing (except for accumulator) prohibited.  Dry sump system prohibited.”
 
REPLACE WITH:
 
“Stock, OEM, or OEM aftermarket replacement oil pump permitted. Oil pump location,  oil pump drive, and complete oiling system must remain as originally produced, except for additional internal plumbing (i.e. rocker shaft, etc.), which is permitted. Accumulator permitted.  Additional external plumbing (except for accumulator,  remote oil filter, and line(s) from the oil pan to oil pump) prohibited. Dry sump system prohibited.”
 
ENGINE: 1
 
Piston
 
Page 116
 
Add to end of section: Lateral gas porting permitted.
 
SUPER STOCK GT
 
Section 9B – Super Stock GT
 
BODY: 7
FLOOR
Page 125
DELETE:
“For FWD conversion cars, a driveshaft tunnel may be fabricated of same-as-OEM material and must be fully welded to the as-built OEM floor.”
REPLACE WITH:
“For FWD conversion cars, a driveshaft tunnel must be fabricated of same-as-OEM material minimum, and must be fully welded to the as-built OEM floor.”
MODIFIED STOCK
Section 9D – Modified Stock
ENGINE: 1
ENGINE
Page 128
ADD:
“OEM aftermarket small-block Chevrolet (SBC) engines with bore centers greater than 4.420 inches are not permitted.”
BODY: 7
FLOOR
Page 131
DELETE:
“For FWD conversion cars, a driveshaft tunnel may be fabricated of same-as-OEM material and must be fully welded to the as-built OEM floor.”
REPLACE WITH:
“For FWD conversion cars, a driveshaft tunnel must be fabricated of same-as-OEM material minimum, and must be fully welded to the as-built OEM floor.”
MODIFIED TRUCK
Section 9E – Modified Truck
ENGINE: 1
ENGINE
Page 133
ADD:
“OEM aftermarket small-block Chevrolet (SBC) engines with bore centers greater than 4.420 inches are not permitted.”
MODIFIED
Section 9F – Modified
ENGINE: 1
ENGINE
Page 135
ADD:
“OEM aftermarket small-block Chevrolet (SBC) engines with bore centers greater than 4.420 inches are not permitted.”
Section 9F – Modified
BODY: 7
FLOOR
Page 138
DELETE:
“For FWD conversion cars, a driveshaft tunnel may be fabricated of same-as-OEM material and must be fully welded to the as-built OEM floor.”
REPLACE WITH:
“For FWD conversion cars, a driveshaft tunnel must be fabricated of same-as-OEM material minimum, and must be fully welded to the as-built OEM floor.”
COMP
Gas Dragster
Section 10A – Gas Dragster
CLASSES
Page 148
DELETE:
H/D - 9.80 or more pounds per cubic inch; 1,800-pound minimum; turbocharged, 6-cylinder, 2- and 4-valve engines only.
REPLACE WITH:
H/D -- 9.80 or more pounds per cubic inch, 1800 pound minimum; turbocharged, 6 or 8 cylinder engines only
ENGINE: 1
TURBOCHARGER
DELETE:
H/D limited to maximum single 74mm or maximum twin 58mm turbocharger.
REPLACE WITH:
H/D limited to: Six-cylinder, single turbo applications limited to a maximum 91mm (3.583 inches); Six-cylinder, twin turbo applications limited to a maximum 76mm (2.992 inches); Eight-cylinder, small-block turbo applications limited to a maximum 78mm (3.071 inches); Eight-cylinder, big-block turbo applications limited to a maximum 82mm (3.228 inches.)
 
ALTERED & STREET ROADSTER
Section 10D – Altered & Street Roadster
ENGINE: 1
ENGINE
Page 159
DELETE:
“OEM aftermarket small-block Chevrolet (SBC) engines with bore centers greater than 4.420 inches are not permitted.”
SUPERCHARGER
Page 160
 
DELETE:
 
“Restricted to Roots-type supercharger, rotor helix angle not to exceed that of standard 71-series GM-type rotor. Maximum size: 14-71, 22 1/4-inch case length, 11 1/4-inch case width, 19-inch rotor length; maximum rotor diameter: 5.840 inches including fixed stripping. The case must be one piece with removable front and rear bearing end plates; rotor must be contained within one-piece case. Variable multi-speed supercharger devices prohibited. Supercharger restraint system meeting SFI Spec 14.1 mandatory. Air-to-air intercooler permitted on supercharged vehicles. Supercharger must be in conventional location above the intake manifold and cylinder heads, and supercharger restraint device may not be modified. Ambient air only; i.e., the flow of ambient air through the intercooler and any associated ducting must be only a result of the movement of the vehicle. For CC/A only, a 5.150-inch centrifugal supercharger limited to inlet diameter internal O.D. 5.250 maximum; impeller inducer diameter 5.150-inch maximum; impeller exducer diameter 8.000-inch maximum; discharge diameter 4.000-inch maximum; housing diameter (external diameter of housing not to include discharge) 12.000-inch maximum. Supercharger drive must be belt, NHRA-accepted chain drive or NHRA-accepted gear drive.”
 
REPLACE WITH:
“Restricted to Roots-type supercharger, rotor helix angle not to exceed that of standard 71-series GM-type rotor. Maximum size: 14-71, 22 1/4-inch case length, 11 1/4-inch case width, 19-inch rotor length; maximum rotor diameter: 5.840 inches including fixed stripping. The case must be one piece with removable front and rear bearing end plates; rotor must be contained within one-piece case. The rotors must be driven from the front (both the external drive and the internal gearing).  The entire inlet opening must be on/in the upper surface only.  Any inlet/outlet cavity in front of the rotors is restricted to maximum one-inch, measuring from the face of bearing plate to the back of the cavity. Billet cases prohibited. The maximum length from the front of the supercharger drive pulley to the leading edge of the rotor is 15 inches. Offset drive pulleys may not be used to add to the number listed above. All manifold configurations and supercharger modifications and locations must be accepted prior to competition. Variable multi-speed supercharger devices prohibited.  Supercharger restraint system meeting SFI Spec 14.1 mandatory. Air-to-air intercooler permitted on supercharged vehicles. Supercharger must be in conventional location above the intake manifold and cylinder heads, and supercharger restraint device may not be modified. Ambient ....... See General Regulations 1:10, 1:11”
 
BODY: 7
 
BODY, Full-Bodied Cars
 
Page 163
 
Delete:
 
“Maximum front-end overhang is 45 inches or OEM +/- 1 inch for all 2001 and newer cars or previously accepted NHRA Pro Stock bodies. All 2000 and older vehicles must retain stock overhang +/- 1 inch.”
 
REPLACE WITH:
“Maximum front-end overhang is 45 inches.”
 
PROTECTIVE CLOTHING
Pg 166
 
DELETE:
 
“All drivers of open-bodied vehicles who do not use an SFI 3.3 neck collar (drivers who use head and neck restraint system only), an SFI 3.3 head sock or SFI 3.3 skirted helmet mandatory.”
 
REPLACE WITH:
 
“A SFI  3.3 head sock or SFI 3.3 skirted helmet is required on all open-bodied cars or all cars 7.49 & quicker, where a neck collar is not used.”
 
ALTERED TRUCK
 
Section 10E – Altered Truck
ENGINE: 1
ENGINE
Page 167
DELETE:
“OEM aftermarket small-block Chevrolet (SBC) engines with bore centers greater than 4.420 inches are not permitted.”
PROTECTIVE CLOTHING
 
Pg 171
 
ADD:
 
“An SFI  3.3 head sock or SFI 3.3 skirted helmet is required on all cars 7.49 & quicker, where a neck collar is not used.”
 
ECONO ALTERED
 
Section 10G -  Econo Altered
 
BODY: 7
 
BODY, Full-Bodied Cars
 
Page 174
 
Delete:
 
“Maximum front-end overhang is 45 inches or OEM +/- 1 inch for all 2001 and newer cars or previously accepted NHRA Pro Stock bodies. All 2000 and older vehicles must retain stock overhang +/- 1 inch.”
 
REPLACE WITH:
 
“Maximum front-end overhang is 45 inches.”
 
PROTECTIVE CLOTHING
 
Page 176
 
ADD:
 
“An SFI 3.3 head sock or SFI 3.3 skirted helmet is required on all open-bodied cars or all cars 7.49 & quicker, where a neck collar is not used.”
 
SUPER MODIFIED
 
Section 10G  - Super Modified
 
DRIVER: 10
 
PROTECTIVE CLOTHING
 
Page 183
 
ADD:
 
“An SFI  3.3 head sock or SFI 3.3 skirted helmet is required on all cars 7.49 & quicker, where a neck collar is not used.”
 
PRO MODIFIED
 
Section 10H - Pro Modified
 
ENGINE: 1
 
SUPERCHARGER
 
Page 185
 
DELETE:
 
“Permitted in AA/PM only, standard or high-helix Roots-type mandatory. Screw-type supercharger prohibited. Manifold burst panel meeting SFI Spec 23.1 plus restraint system meeting SFI Spec 14.2 mandatory.
Maximum supercharger overdrive limit is 20.0 percent on all combinations.
Intercoolers, variable multi-speed supercharger devices, turbocharger(s) prohibited in both classes. Nitrous oxide injection prohibited in AA/PM. OEM manufacturer’s (cast) case mandatory; billet cases prohibited. The top opening may not exceed 11 inches in length or 5 inches in width. The maximum length from the front of the supercharger drive pulley to the leading edge of the rotor is 15 inches. Offset drive pulleys may not be used to add to the number listed above. All manifold configurations and supercharger locations must be accepted prior to competition. The use of spacers, modified cases, or attaching methods to move the supercharger rearward in excess of the specified amount is prohibited. See General Regulations 1:10, 1:11.”
 
REPLACE WITH:

“Permitted in AA/PM only, standard or high-helix Roots-type mandatory. Screw-type supercharger prohibited. Manifold burst panel meeting SFI Spec 23.1 plus restraint system meeting SFI Spec 14.2 mandatory.
Maximum supercharger overdrive limit is 20.0 percent on all combinations.
Intercoolers, variable multi-speed supercharger devices, turbocharger(s) prohibited in both classes. Nitrous oxide injection prohibited in AA/PM. OEM manufacturer’s (cast) case mandatory; billet cases prohibited. The top opening may not exceed 11 inches in length or 5 inches in width. The maximum length from the front of the supercharger drive pulley to the leading edge of the rotor is 15 inches. Offset drive pulleys may not be used to add to the number listed above. All manifold configurations, and supercharger modifications and location, must be accepted prior to competition. The use of spacers, modified cases, or attaching methods to move the supercharger rearward in excess of the specified amount is prohibited.  The rotors must be driven from the front (both the external drive and the internal gearing).  The entire inlet opening must be on/in the upper surface only.  Any inlet/outlet cavity in front of the rotors is restricted to maximum 2.150-inch, measuring from the face of bearing plate to the back of the cavity. See General Regulations 1:10, 1:11.”
 
DRIVER: 10
 
PROTECTIVE CLOTHING
 
Page 188
 
ADD:
 
“A SFI  3.3 head sock or SFI 3.3 skirted helmet is required on all cars 7.49 & quicker, where a neck collar is not used.”
 
TOP ALCOHOL DRAGSTER
Section 11
CLASS WEIGHT BREAKS
Page 190
Delete:
“100 percent nitromethane permitted at events contested at Bandimere Speedway in Denver.  Maximum nitromethane content 96 percent at all other events.”
REPLACE WITH:
“100 percent nitromethane permitted at events contested at Bandimere Speedway in Denver.  Maximum nitromethane content 94 percent at all other events.”
ENGINE: 1
FUEL SYSTEM
Page 191
Delete:
“Artificial cooling and/or heating of fuel prohibited.”
Replace with:
“Artificial cooling and/or heating of fuel (i.e. cool cans, ice, Freon, etc.) prohibited on the car. Insulated fuel lines and fuel tanks prohibited. Artificial cooling and/or heating of fuel confined to the pit area only. The use of dry ice and/or liquid nitrogen for artificial cooling of fuel prohibited.”
SUPERCHARGER
 
Page 192
 
DELETE:
“Roots-type maximum size: 14-71, 22 1/4-inch case length, 11 1/4-inch case width,19-inch rotor length; maximum rotor diameter: 5.840 inches including fixed stripping. The case must be one piece with removable front and rear bearing end plates; rotor must be contained within one-piece case. Helix is restricted to a maximum rotor spiral of 6.5 degrees per inch of rotor length. Manifold burst panel meeting SFI Spec 23.1 plus restraint system meeting SFI Spec 14.2 mandatory.”
REPLACE WITH:
“Roots-type maximum size: 14-71, 22 1/4-inch case length, 11 1/4-inch case width,19-inch rotor length; maximum rotor diameter: 5.840 inches including fixed stripping. The case must be one piece with removable front and rear bearing end plates; rotor must be contained within one-piece case. Helix is restricted to a maximum rotor spiral of 6.5 degrees per inch of rotor length.  The rotors must be driven from the front (both the external drive and the internal gearing).  The entire inlet opening must be on/in the upper surface only.  Any inlet/outlet cavity in front of the rotors is restricted to maximum one-inch, measuring from the face of bearing plate to the back of the cavity. Billet cases prohibited. The maximum length from the front of the supercharger drive pulley to the leading edge of the rotor is 15 inches. The use of spacers, modified cases, offset drive pulleys, or attaching methods tomove the supercharger rearward in excess of the specified amount is prohibited. All manifold configurations and supercharger modifications and locations must be accepted prior to competition. Variable multi-speed supercharger devices prohibited.  Manifold burst panel meeting SFI Spec 23.1 plus restraint system meeting SFI Spec 14.2 mandatory. Supercharger must be in conventional location above the intake manifold and cylinder heads, and supercharger restraint device may not be modified.”
BRAKES & SUSPENSION: 3
STEERING
Page 194 (Page 201)
DELETE:
“Plating of steering components prohibited for cars built after 1/1/09.”
REPLACE WITH:
“Plating of steering components prohibited on all cars, effective June 2, 2009.”
Suspension
Page 194 (Page 201)
DELETE:
“Plating of front suspension components prohibited for cars built after 1/1/09.”
REPLACE WITH:
“Plating of front suspension components prohibited on all cars, effective June 2, 2009.”
TOP ALCOHOL FUNNY CAR
ENGINE: 1
FUEL SYSTEM
Page 200
Remove previous Amendment:
“Artificial cooling and/or heating of fuel (i.e. cool cans, ice, Freon, etc.) prohibited on the car. Insulated fuel lines and fuel tanks prohibited. Artificial cooling and/or heating of fuel confined to the pit area only. The use of dry ice and/or liquid nitrogen for artificial cooling of fuel prohibited.”
Replace with:
“Insulated fuel lines and fuel tanks prohibited. Minimum temperature of fuel in the staging lanes to the completion of the run and subsequent NHRA fuel check is 50°F. Effective August 13th, 2009.”
PRO STOCK MOTORCYCLE
DESIGNATION
Page 206
DELETE:
“Harley-Davidson (up to 160 cid; 45- to 60-degree angle, 4-valve) – 620 pounds”
REPLACE WITH:
“Harley-Davidson (up to 160 cid; 45- to 60-degree angle, 4-valve) – 640 pounds”
DELETE:
“Suzuki (101 cid, 2-valve) – 605 pounds”
“Suzuki (101 cid, 4-valve) – 605 pounds”
REPLACE WITH:
“Suzuki (101 cid, 2-valve) – 595 pounds”
“Suzuki (101 cid, 4-valve) – 595 pounds”
Section 13
BODY: 7
AIR INTAKES
Page 210
ADD:
“No external modifications allowed to NHRA accepted scoops”
SUPPORT GROUP: 9
COMPUTER/DATA RECORDERS
Page 210
DELETE:
“Can be used for information gathering only.  Throttle operation, shifting, clutch actuation, etc. are to be solely under the control of the rider.  See General Regulations 9:1, 9:2.”
REPLACE WITH:
“Data recorders permitted; must be NHRA accepted, standalone and used for information gathering only.  Throttle operation, shifting, clutch actuation, etc. are to be solely under the control of the rider.  Data recorders may not collect any information from the induction system other than engine rpm.  Digital dash displays and digital dash displays with data recording capabilities are prohibited.  All other instrumentation prohibited on dash with the exception of a shift light and warning lights (i.e. low oil pressure, fuel pressure).  See General Regulations 9:1, 9:2.”
 
PRO STOCK
Section 14
ENGINE: 1
OIL-RETENTION DEVICE
Page 213
DELETE:
“Pan must run from in front of front motor plate to in front of the rear motor plate and to just inside of the lower frame rails.”
REPLACE WITH:
“Pan must run from in front of front motor plate to in front of the rear motor plate and to just inside or outside, of the lower frame rails.”
TIRES & WHEELS: 5
TIRES
Page 210
ADD:
“Restricted to Goodyear-only tires, as specified by NHRA.”
BODY: 7
WINDSHIELD, WINDOWS
Page 218
DELETE:
“With the exception of the driver’s name, car number, car builder’s name, and class designation, side windows, including quarter windows, must remain clear of decals, paint scheme, etc.”
REPLACE WITH:
“Side windows, including quarter windows, limited to driver’s name, car number, car builder name, class designation and decals only.  Paint scheme may not extend into these windows. Decals may not completely cover these windows. Outer edge outline of windows must remain uncovered.  NHRA Technical Services reserves the right to accept or prohibit the placement of the decals on the windows as deemed necessary to comply with this rule.”
SUPPORT GROUP: 9
 
Page: 219
 
ADD:
 
ACCIDENT DATA RECORDER
 
“Properly installed and operational Delphi Accident Data Recorder (part number MS0148) required. The Delphi Accident Data Recorder must be installed per the manufacturer’s instructions. Modification of, or tampering with, the Delphi Accident Data Recorder prohibited.”
DRIVER: 10
PROTECTIVE CLOTHING
Page 219
ADD:
“An SFI  3.3 head sock or SFI 3.3 skirted helmet is required on all cars, where a neck collar is not used.”
 
FUNNY CAR
DESIGNATION
Page 221
Delete:
“Minimum weight at conclusion of run: 2,555 pounds, including driver.”
Replace with:
“Minimum weight at conclusion of run: 2,575 pounds, including driver.” Effective July 17th, 2009
BRAKES
Page 224
After:
Steel brake lines mandatory.”
ADD:
“NHRA accepted fireproof brake line covering mandatory on all steel braided connection lines (i.e. from bulkhead to brake caliper). Contact the NHRA Tech Department for approved manufacturer(s).” Effective July 24th, 2009
Section 15
ENGINE: 1
VALVE COVERS
Page 223
DELETE:
“Must be installed using 5/16-inch steel studs and nuts.”
REPLACE WITH:
“Must be installed using 5/16-inch steel studs (4130 minimum), and steel or titanium nuts.”
DRIVETRAIN: 2
Page 224
ADD:
REVERSER COVER
“A one-piece tunnel, covering the reverser and driveshaft, mandatory.  Must extend from rear of bell housing back to within 2-inches of the front of driver’s seat, and be of titanium of .078-inch thick minimum, chromoly 4130 of  .90-inch thick minimum, carbon composite of .10-inch thick minimum, or carbon/titanium of .130-inch minimum. Hole allowed for lever.  Must include minimum 1-inch horizontal, mounting flange at edges of tunnel.  Mounting to chassis floor “X” member, minimum 4 places, 5/16-inch steel or titanium bolts mandatory.”
BRAKES & SUSPENSION: 3
Steering
Page 224
ADD:
“Plating of steering components prohibited.”
Suspension
Page 224
ADD:
“Plating of front suspension components prohibited.”
BODY: 7
Body
Page 227
DELETE:
“Wicker permitted on front side of blower opening; maximum height 1 inch”
REPLACE WITH:
“Wicker permitted onfront and sidesof blower opening; maximum height 1 inch”
ELECTRICAL: 8
Page 230
ADD:
SHUTOFF
 
“Properly installed and operational Electrimotion Funny Car Safety Shutoff Controller Kit (part number SB001FC) required. The Electrimotion Funny Car Safety Shutoff Controller Kit must be installed per the manufacturer’s instructions. Modification of or tampering with the Electrimotion Funny Car Safety Shutoff Controller Kit prohibited.”
 
SUPPORT GROUP: 9
 
COMPUTER/DATA RECORDER
 
Page 231
 
ADD:
 
“Data recorders permitted; must be NHRA accepted.  Accepted systems: Racepak Pro II, Pro 1B, and Pro I.  Data recorder may be used in conjunction with manufacturer’s digital dash display.”
 
Page 231
 
ADD:
 
ACCIDENT DATA RECORDER
 
“Properly installed and operational Ford Accident Data Recorder (part number MS0148) required. The Ford Accident Data Recorder must be installed per the manufacturer’s instructions. Modification of or tampering with the Ford Accident Data Recorder prohibited.”
 
TOP FUEL DRAGSTER
Section 16
ENGINE: 1
VALVE COVERS
Page 235
DELETE:
“Must be installed using 5/16-inch steel studs and nuts.”
REPLACE WITH:
“Must be installed using 5/16-inch steel studs (4130 minimum), and steel or titanium nuts.”
BRAKES & SUSPENSION: 3
Page 236
After:
“Steel brake lines mandatory.”
Add:
“NHRA accepted fireproof brake line covering mandatory on all steel braided connection lines (i.e. from bulkhead to brake caliper). Contact the NHRA Tech Department for approved manufacturer(s).” Effective July 24th, 2009”
Steering
Page 236
ADD:
“Plating of steering components prohibited.”
Suspension
Page 236
ADD, at end of section:
“Plating of front suspension components prohibited.”
BODY: 7
Page 240
WINGS & SUPPORTS
DELETE:
“All Top Fuel rear wing main elements must be positioned with a zero to positive 2-degree angle relative to the racing surface.”
REPLACE WITH:
“All Top Fuel rear wing main elements must be positioned with a positive 2-degree angle maximum (no minimum) relative to the racing surface.”
ELECTRICAL: 8
Page 240
ADD:
SHUTOFF
 
“Properly installed and operational Electrimotion Top Fuel Safety Shutoff Controller Kit (part number SB001TF) required. The Electrimotion Top Fuel Safety Shutoff Controller Kit must be installed per the manufacturer’s instructions. Modification of or tampering with the Electrimotion Top Fuel Safety Shutoff Controller Kit prohibited.”
 
SUPPORT GROUP: 9
 
COMPUTER/DATA RECORDER
 
Page 240
 
ADD:
 
“Data recorders permitted; must be NHRA accepted.  Accepted systems: Racepak Pro II, Pro 1B, and Pro I.  Data recorder may be used in conjunction with manufacturer’s digital dash display.”  
 
Page: 240
 
ADD:
 
ACCIDENT DATA RECORDER
 
“Properly installed and operational Ford Accident Data Recorder (part number MS0148) required. The Ford Accident Data Recorder must be installed per the manufacturer’s instructions. Modification of or tampering with the Ford Accident Data Recorder prohibited.”
 
General Regulations
Section 19
 
ENGINE: 1
 
1:6 FUEL
 
Page 251
 
DELETE:
 
“Nitromethane: Only nitromethane from an NHRA-accepted supplier may be brought on site or used on site at any NHRA Full Throttle Drag Racing Series event (“NHRA National Event”) or NHRA Lucas Oil Drag Racing Series event (“NHRA Divisional Event”). NHRA will designate accepted suppliers of nitromethane that may be brought on site and/or used on site at NHRA National Events and NHRA Divisional Events.  To be eligible for competition, fuel teams must use nitromethane from one of the accepted suppliers.  All nitromethane will continue to be required to contain a marker that changes color when the nitromethane has been sensitized or contaminated; no clear nitromethane will be allowed.  Fuel whether in the vehicle or otherwise, as well as transporters and pit areas, will be checked for compliance with this rule as deemed appropriate by NHRA.  Any participant who violates any rule regarding nitromethane shall be banned from competition at the applicable event, orshall be subject to such other penalty deemed appropriate by NHRA.”
 
REPLACE WITH:
 
“Nitromethane: Only nitromethane from an NHRA-accepted on-site supplier may be present on-site or used on-site at any NHRA Full Throttle Drag Racing Series event (“NHRA National Event”) or NHRA Lucas Oil Drag Racing Series event (“NHRA Divisional Event”). To be eligible for competition, any team using nitromethane must use nitromethane from an accepted on-site supplier. At this time the only accepted on-site supplier is VP Racing Fuels. Fuel anywhere on-site at a NHRA National Event or NHRA Divisional Event, including without limitation, in the vehicle, transporter, pit area or at the NHRA-accepted supplier’s onsite location, may be checked at any time and for any reason, including compliance with this rule and with the Nitromethane specification. Any participant who violates any rule regarding nitromethane may be banned from competition at the applicable event, and shall be subject to such other penalty deemed appropriate by NHRA.
Specifications for Nitromethane as Used as a Fuel in the NHRA Full Throttle Drag Racing Series and in the Lucas Oil Drag Racing Series:”
Chemistry
Property
Minimum
Maximum
Nitromethane
99.5%
Not applicable
Water
Not applicable
0.5%
Specific Gravity @ 60º F
1.140
1.145
Acidity as Acetic Acid
Not applicable
0.20%
Amines
Not applicable
Not allowed
Heavy Metals (Pb, Hg)
Not applicable
Not allowed
Alcohols and products consistent with the manufacturing process
Balance
Balance
Color (light yellow) clear nitromethane not allowed
Not applicable
Not applicable
Odor (typical)
Not applicable
Not applicable
Methyl tert-butyl ether
Not applicable
0.1%
Dimethyl Sulfate
Not applicable
15 ppm
Note: All nitromethane will continue to be required to contain an active safety indicator that changes color when the nitromethane has been sensitized or contaminated.
Typical Physical Properties
Molecular Weight
61.04
Boiling Point
101ºC (214ºF)
Critical Temperature
315ºC (599ºF)
Critical Pressure
62atm, 915psia, 6282kPa
 
 
Vapor Pressure
 
@ 20ºC/68ºF
27.3 mm Hg (3.6 kPa)
@ 40ºC/104ºF
74.8 mm Hg (9.9 kPa)
@ 60ºC/140ºF
177.8 mm Hg (23.7 kPa)
 
 
Density
 
@0ºC/32ºF
1.162 g/ml
@20ºC/68ºF
1.138 g/ml
@30ºC/86ºF
1.124 g/ml
@50ºC/122ºF
1.098 g/ml
 
 
Approximate Coefficient of Expansion 1/ºC (1/ºF)
0.00122 (0.00068)
Solubility H2O in NM@70ºC (158ºF)
19.3% by weight
 
 
 
ENGINE: 1
 
1:6 Nitrous Oxide
 
Page 251
Delete second sentence in third paragraph, replace with Push system permitted.
 
1:10 SUPERCHARGER
Page 252
Screw-type
Delete:
“Use of screw-type supercharger is restricted to Top Alcohol Dragster and Top Alcohol Funny Car.”
 
FRAME: 4
 
4:10 Roll Bar
Page 261
ADD:
All roll bars must be within 6 inches of the rear, or side, of the driver's head, extend at least three inches above the driver's helmet with driver in normal driving position or be within 1 inch of the roof/headliner in the area above the driver's helmet, and be at least as wide as the driver's shoulders or within 1 inch of the driver's door
4:11 Roll Cage
 
Page 266
 
DELETE:
“On unibody cars with stock floor and firewall (wheel tubs permitted), the roll cage may be bolted or welded to the floor/rocker box via 6-inch x 6-inch X .125-inch steel plates similar to the roll-bar  attachment requirements of paragraph 4:10, page 214.
 
ADD:
 
“On unibody cars with stock floor and firewall (wheel tubs permitted), the roll cage may be bolted or welded to the floor/rocker box via 6-inch x 6-inch X .125-inch steel plates similar to the roll-bar  attachment requirements of paragraph 4:10, page 262.
 
10:7 HELMET
 
Pg 282
 
DELETE:
 
“Head sock or skirted helmet required on all supercharged cars and all cars with an automatic transmission and/or converter in the driver’s compartment. Head sock or skirted helmet also required on all open-bodied cars where a neck collar is not used; i.e., where a head and neck restraint only is used.”
 
10:8 NECK COLLAR/HEAD AND NECK RESTRAINT DEVICE
 
Page 283
 
Add:
“Neck collar meeting SFI Spec 3.3 mandatory in all  open-bodied cars and any car  running 9.99 (*6.39) or quicker or cars exceeding 135 mph. A head and neck restraint device/system may be used in lieu of a neck collar.”
 
10:10 PROTECTIVE CLOTHING
 
Pg 283
 
ADD:
 
“An SFI 3.3 head sock or SFI 3.3 skirted helmet is required on all open-bodied cars or all cars 7.49 & quicker, where a neck collar is required but has been  substituted with a head and neck restraint device.   See class requirements.”