Re: Which Combo's are most likely to get HP added or subtrac
Stock Horsepower Changes
Engine OEM NHRA New
Make CID HP HP HP Years Affected
AMC 258 114 150 148 1977 Pacer
Buick 231 105 127 125 1978 Skyhawk
Chev 327 250 245 241 1968 Chevelle
Chev 350 175 287 283 1978 Malibu
Chev 350 175-185 275 271 1978 Camaro AT
Chev 350 270 278 274 1971 Camaro
Chev 396 350 335 330 1968 Camaro AT
Chev 409 409 370 365 1962 Biscayne
Chev 427 425 435 429 1969 Chevelle
Chev 454 425 414 408 1971 Chevelle MT
Mopar 225 110 144 142 1980 Diplomat
Mopar 340 290 312 308 1970 Cuda
Mopar 340 240 281 277 72-73 Roadrunner
Mopar 360 245 305 301 1974 Dart
Mopar 426 400 434 428 64-65 440
Mopar 426 400 445 439 1964 Savoy
Mopar 426 425 425 419 1963 Savoy
Mopar 425 425 434 424 70-71 Challenger
Mopar 426 425 456 450 1964 Belvedere
Mopar 440 385 402 396 1971 Charger
Mopar 440 390 382 377 1970 Cuda
Ford 140 92 109 107 1976 Pinto
Ford 140 145 168 165 1983 Mustang
Ford 281 225 207 204 96-98 Mustang
Ford 302 225 220 217 1992 Mustang
Ford 302 230 223 220 1968 Mustang
Ford 427 410 410 404 66-67 Fairlane MT
Ford 427 410 410 404 66-67 Fairlane AT
Ford 429 370 345 340 1971 Cougar
Olds 400 350 340 335 1967 442
Olds 455 390 351 346 1968 Hurst
Pont 400 330 338 333 1968 Firebird
Pont 455 290 340 335 73-74 Firebird
Pont 455 335 335 330 1971 Tempest
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