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Stock, Super Stock horsepower letter responses
12/19/2002
The NHRA Stock/Super Stock Committee has reviewed written requests received by Dec. 15, from Lucas Oil Sportsman racers in its evaluation of specific Stock and Super Stock horsepower adjustments and has made the noted changes. These adjustments for the final review period of 2002 are effective Jan. 1, 2003. Letters received after Dec. 15 will be addressed during the next review period.
The review is part of NHRA's commitment to evaluating requests from the Sportsman racing community and is an important step for NHRA's Automatic Horsepower Factoring System.
Requests for horsepower changes or reviews can be e-mailed to Bob Lang, blang@nhra.com, or Curt LaShure, clashure@nhra.com; faxed, (215) 343-0159; or mailed to NHRA Stock/Super Stock Committee, 366 Easton Road, Warrington, PA 18976.
| Super Stock Horsepower Changes | ||||||
| Make | CID | OEM HP | NHRA HP | HP Adjustment | New HP | Years Affected |
| Buick | 455 | 250 | 293 | -8 | 285 | 1972 |
| Buick | 455 | 245 | 304 | -9 | 295 | 1974 |
| Chevy | 327 | 250 | 255 | -5 | 250 | 1968 (SS only) |
| Chevy | 396 | 375 | 395 | -5 | 390 | 1969 (Automatics; SS & GT only) |
| Chevy | 396 | 375 | 405 | -5 | 400 | 1969 (Automatics; SS & GT only) |
| Chevy | 427 | 435 | 480 | -15 | 465 | 1969 |
| Dodge/Plymouth | 318 | 155 | 250 | -5 | 245 | 1978 (SS only) |
| Dodge/Plymouth | 426 | 365 | 365 | -45 | 320 | 1965 |
| Dodge/Plymouth | 426 | 415 | 415 | -10 | 405 | 1964 |
| Dodge/Plymouth | 426 | 425 | 425 | -10 | 415 | 1964 |
| Ford | 302 | 225 | 235 | -10 | 225 | 1988 |
| Ford | 351 | 266 | 310 | -5 | 305 | 1972 |
| Ford | 351 | 280 | 310 | -5 | 305 | 1971 |
| Ford | 351 | 290 | 290 | -30 | 260 | 1969 |
| Ford | 351 | 300 | 300 | -10 | 290 | 1995 |
| Ford | 390 | 320 | 320 | -5 | 315 | 1967 |
| Ford | 429 | 370 | 410 | -30 | 380 | 1971 |
| Pontiac | 400 | 330 | 325 | -10 | 315 | 1968 |
| Pontiac | 428 | 360 | 350 | -30 | 320 | 1967 |
| Super Stock Horsepower No Changes | ||||
| Make | CID | OEM HP | NHRA HP | Years Affected |
| Chevy | 283 | 220 | 230 | 1966 |
| Chevy | 327 | 250 | 265 | 1968 (GT only) |
| Chevy | 327 | 250 | 274 | 1968 (GT only) |
| Chevy | 350 | 245 | 270 | 1991 |
| Chevy | 400 | 180 | 300 | 1974 |
| Chevy | 396 | 325 | 355 | 1967 |
| Chevy | 427 | 400 | 419 | 1967 |
| Dodge/Plymouth | 318 | 155 | 250 | 1978 (GT only) |
| Ford | 428 | 335 | 360 | 1968 |
| Ford | 289 | 225 | 215 | 1966 |
| Ford | 428 | 335 | 345 | 1969 |
| Stock Horsepower Changes | ||||||
| Make | CID | OEM HP | NHRA HP | HP Adjustment | New HP | Years Affected |
| Chevy | 262 | 130 | 160 | -5 | 155 | 1985 |
| Chevy | 305 | 145 | 200 | -10 | 190 | 1978 |
| Chevy | 350 | 165 | 240 | -10 | 230 | 1972 |
| Chevy | 350 | 360 | 355 | -30 | 325 | 1970 |
| Dodge | 318 | 160 | 255 | -15 | 240 | 1980 (Truck only) |
| Dodge/Plymouth | 413 | 410 | 410 | -15 | 395 | 1962 |
| Dodge/Plymouth | 413 | 420 | 420 | -15 | 405 | 1962 |
| Dodge/Plymouth | 426 | 365 | 320 | -20 | 300 | 1965 |
| Ford/Mercury | 289 | 210 | 210 | -5 | 205 | 1964 |
| Ford | 302 | 143 | 210 | -40 | 170 | 1972 |
| Ford | 390 | 325 | 325 | -10 | 315 | 1968 |
| Ford | 429 | 370 | 365 | -10 | 355 | 1971 |
| Mercury | 429 | 360 | 360 | -5 | 355 | 1970 |
| Olds | 350 | 200 | 275 | -25 | 250 | 1972 (Automatic only) |
| Pontiac | 151 | 92 | 120 | -7 | 113 | 1985 |
| Pontiac | 400 | 340 | 365 | -5 | 360 | 1968 |
| Pontiac | 403 | 185 | 285 | -5 | 280 | 1979 |
| Pontiac | 421 | 405 | 405 | -20 | 385 | 1962 |
| Pontiac | 455 | 250 | 320 | -5 | 315 | 1972 |
| Pontiac | 455 | 360 | 355 | -5 | 350 | 1970 |
| Stock Horsepower No Changes | ||||
| Make | CID | OEM HP | NHRA HP | Years Affected |
| Buick | 231 | 105 | 130 | 1978 |
| Chevy | 283 | 220 | 220 | 1965 |
| Chevy | 283 | 220 | 226 | 1966 |
| Chevy | 305 | 160 | 245 | 1979 |
| Chevy | 327 | 350 | 300 | 1966 |
| Chevy | 350 | 175 | 275 | 1979 |
| Chevy | 350 | 255 | 280 | 1969 |
| Chevy | 350 | 300 | 290 | 1970 |
| Chevy | 396 | 325 | 325 | 1969 |
| Chevy | 402 | 375 | 385 | 1970 |
| Dodge | 383 | 343 | 330 | 1962 |
| Ford | 428 | 335 | 380 | 1969 |
| Olds | 350 | 170 | 250 | 1978 |
| Plymouth | 340 | 275 | 310 | 1971 |
| Pontiac | 305 | 165 | 249 | 1986 |
Return to 2002 Sportsman News Archive