NHRA year end horsepower numbers are out

Jack Matyas · 12-19-2016, 03:45 PM

New NHRA horsepower numbers are out on NHRAracer - Merry Christmas ! ! !

Bob Don · 12-19-2016, 04:26 PM

2016 End of Year Stock, Super Stock Horsepower Adjustments Announced
The following Stock/Super Stock horsepower changes were released December 19, 2016 produced by the Automatic Horsepower Factoring System (AHFS). This is the second of two scheduled horsepower adjustments for this year. All changes are effective January 1, 2017. It should be noted that these changes include only results produced by the AHFS, and do not include written letters or requests. Those changes are listed separately.
The AHFS is a program based on actual run data compiled from all available runs at NHRA national events. The data-based format provides the ability to calculate average performances for any class and/or engine combination in Stock and Super Stock. The trigger point for the system is 1.00-second or more under the respective index, and must be produced on two different occasions. Engine-combination averages and class averages are then computed and analyzed to determine if a change is warranted. The amount of change is calculated on a stepped percentage basis. Where applicable, adjustments will be effective for the specific car model or body style being evaluated. An automatic adjustment is instituted outside the two-time a year process when a 1.20 and under run is recorded during any NHRA event.
Any comments, thoughts, or requests must be sent in writing to: National Hot Rod Association; Technical Department; attn: AHFS; P.O. Box 5555, Glendora, CA 91740; or e-mail, AHFS@nhra.com or pcvengros@nhra.com

Stock Horsepower Changes
Complete for 2nd half rating period of 2016

Engine OEM NHRA New
Make CID HP HP HP Years Affected

Buick 350 175 262 266 73-74 Apollo

Chev 262 170 196 199 1996 S-10

Chev 283 220 223 226 1966 Chevy II

Chev 350 300 341 346 1992 Corvette*

Chev 350 530 575 588 14-15 COPO

Chev 396 390 420 430 13-15 COPO

Chev 409 450 450 461 2016 COPO

Chev 427 430 465 471 14-15 COPO

Chev 427 450 461 472 14-15 COPO

Dodge 345 305 337 342 09-10 Drag Pak

Mopar 426 425 450 456 1964 Belvedere

*= correction to match 93, 97-98

Super Stock Horsepower Changes
Complete for 2nd half rating period of 2016

Engine OEM NHRA
Make CID HP HP New HP Years Affected

Dodge 426 450 456 462 09-10 Drag Pak

Dodge 426 460 482 493 2015 Drag Pak

Ford 330 435 504 516 2010 Cobra Jet

Eric Merryfield · 12-19-2016, 04:32 PM

Quote:

Originally Posted by Bob Don

2016 End of Year Stock, Super Stock Horsepower Adjustments Announced
The following Stock/Super Stock horsepower changes were released December 19, 2016 produced by the Automatic Horsepower Factoring System (AHFS). This is the second of two scheduled horsepower adjustments for this year. All changes are effective January 1, 2017. It should be noted that these changes include only results produced by the AHFS, and do not include written letters or requests. Those changes are listed separately.
The AHFS is a program based on actual run data compiled from all available runs at NHRA national events. The data-based format provides the ability to calculate average performances for any class and/or engine combination in Stock and Super Stock. The trigger point for the system is 1.00-second or more under the respective index, and must be produced on two different occasions. Engine-combination averages and class averages are then computed and analyzed to determine if a change is warranted. The amount of change is calculated on a stepped percentage basis. Where applicable, adjustments will be effective for the specific car model or body style being evaluated. An automatic adjustment is instituted outside the two-time a year process when a 1.20 and under run is recorded during any NHRA event.
Any comments, thoughts, or requests must be sent in writing to: National Hot Rod Association; Technical Department; attn: AHFS; P.O. Box 5555, Glendora, CA 91740; or e-mail, AHFS@nhra.com or pcvengros@nhra.com

Stock Horsepower Changes
Complete for 2nd half rating period of 2016

Engine OEM NHRA New
Make CID HP HP HP Years Affected

Buick 350 175 262 266 73-74 Apollo

Chev 262 170 196 199 1996 S-10

Chev 283 220 223 226 1966 Chevy II

Chev 350 300 341 346 1992 Corvette*

Chev 350 530 575 588 14-15 COPO

Chev 396 390 420 430 13-15 COPO

Chev 409 450 450 461 2016 COPO

Chev 427 430 465 471 14-15 COPO

Chev 427 450 461 472 14-15 COPO

Dodge 345 305 337 342 09-10 Drag Pak

Mopar 426 425 450 456 1964 Belvedere

*= correction to match 93, 97-98

Super Stock Horsepower Changes
Complete for 2nd half rating period of 2016

Engine OEM NHRA
Make CID HP HP New HP Years Affected

Dodge 426 450 456 462 09-10 Drag Pak

Dodge 426 460 482 493 2015 Drag Pak

Ford 330 435 504 516 2010 Cobra Jet

And here is the lengthy from competitors list, lots of action here!

Stock Horsepower Changes

OEM NHRA New

Make CID HP HP HP Years Affected

AMC 390 325 315 311 1970 AMX

Chev 265 225 219 216 1956 Full Size

Chev 305 145 180 177 1978 Nova

Chev 305 190 241 237 1987 Camaro

Chev 350 300 286 279 1969 Chevelle

Chev 396 325 320 316 1969 Chevelle

Chev 396 350 340 335 1969 Nova

Chev 402 350 340 335 1970 Nova

Chev 427 425 419 413 1969 Camaro

Mopar 340 290 316 312 1970 Cuda

Mopar 360 220-245 301 297 74-76 Volare

Mopar 383 330 300 296 1969 Dart

Mopar 440 385 422 412 1971 Charger

Ford 140 145 174 171 1984 Tbird

Ford 289 210 200 197 1964 Mustang

Ford 351 248 303 299 1972 Torino

Ford 428 335 371 366 68-69 Mustang

Olds 138 115 109 107 92-94 Achieva

Stock Horsepower No Changes

OEM NHRA

Make CID HP HP Years Affected

Buick 455 315 330 1971 GS

Chev 250 145 145 1971 Chevelle

Chev 265 200 222 1994 Caprice

Chev 283 220 229 1966 Chevy II

Chev 302 290 309 1969 Camaro

Chev 305 165 240 1981 Camaro

Chev 327 275 270 1968 Nova

Chev 327 275 270 1967 Camaro

Chev 327 350 293 1965 Malibu

Chev 346 305 382 2000 Camaro

Chev 346 320 381 2000 Camaro

GM 346 320 342 2000 Formula

Chev 346 350 345 97-04 Corvette

Chev 350 175 275 78-79 Camaro

Chev 350 175 287 1973 Nova

Chev 350 240 270 1989 Camaro

Chev 350 255 280 1969 Chevelle

Chev 350 270 358 1994 Camaro

Chev 350 900 530 2015 COPO*

Chev 350 ? 175 1979 Camaro

Chev 396 350 340 1968 Camaro

Chev 396 375 400 1968 Chevelle

Chev 396 375 405 1969 Camaro

Chev 396 375 412 1969 Nova

Chev 396 375 413 1969 Camaro

Chev 402 375 395 1970 Nova

Chev 402 375 405 1970 Nova

Chev 409 425 375 1962 Biscayne

Chev 427 425 425 1969 Camaro

Chev 427 425 456 2012 COPO

Chev 454 425 414 1971 Chevelle

Chev 454 425 420 1971 Monta Carlo

Chev 454 450 440 1970 Chevelle

Mopar 135 96 102 83-87 Aries

Mopar 273 180 162 1965 Valiant

Mopar 318 150 169 1973 Dart

Mopar 340 240 281 1972 Charger

Mopar 340 275 300 1970 Duster

Mopar 340 280 304 1972 Barracuda

Mopar 340 290 319 1970 Challenger

Mopar 360 180 270 1975 Fury

Mopar 360 220 305 1976 Volare

Mopar 360 245 301 1974 Duster manual*

Mopar 360 245 305 1974 Duster manual

Dodge 370 390 440 2010 Drag Pak

Mopar 383 280 298 1967 Barracuda

Mopar 383 280 300 1967 Barracuda

Mopar 383 335 296 1969 Roadrunner

Mopar 383 343 320 1962 Fury

Mopar 426 405 435 1964 440

Mopar 426 415 415 1964 Savoy

Mopar 426 425 425 1963 Savoy

Mopar 426 425 430 1966 Belvedere

Mopar 440 375 335 1967 GTX

Mopar 440 390 393 1970 GTX

Mopar 440 390 400 1969 Roadrunner

Ford 289 271 271 1967 Mustang

Ford 302 220 220 1969 Mustang

Ford 351 164 240 1972 Cougar

Ford 351 285 305 1971 Mustang

Ford 390 315 323 66-67 Fairlane

Ford 428 335 375 1969 Torino

Ford 428 335 380 1968 Mustang

Ford 428 335 389 1969 Mustang

Olds 307 180 237 1987 Cutlass

Olds 350 170 258 1980 Cutlass

Olds 400 350 340 66-67 442

Olds 455 365 350 1970 442

Pont 350 200 277 1974 Ventura

Pont 455 325 325 1971 Firebird

Pont 455 360 340 1970 GTO

* = no such combination listed in the class guide.

Super Stock Horsepower Changes

OEM NHRA New

Make CID HP HP HP Years Affected

AMC 360 290 264 260 1970 AMX

GM 231 200 179 176 95-02 Camaro/Firebird

Chev 396 375 390 385 1969 Camaro

Chev 327 210 210 207 67-69 GT

Chev 350 270 290 286 1971 GT

Chev 350 295-300 317 313 67-70 GT

Chev 400 180 319 315 1974 GT

Chev 402 300 312 308 1971 GT

Chev 454 215-225 351 346 75-76 GT

Chev 454 345 376 367 1970 Nova

Dodge 370 340 340 332 09-10 Drag Pak*******
STREET CHALLENGER NOT DRAG PAK
Correct in Guide

Mopar 426 365 305 301 1965 Coronet

Mopar 426 415 395 390 1963 Savoy

Mopar 426 415 395 386 1964 Savoy

Mopar 426 425 415 405 1964 Fury

Mopar 273 275 275 268 1966 GT

Mopar 400 210 306 302 1976 GT

Ford 289 225 212 209 1965 Mustang

Ford 281 235 232 229 2010 GT

Ford 330 425 430 425 2008 GT

Ford 351 266-280 289 285 71-72 GT

Super Stock Horsepower No Changes

OEM NHRA

Make CID HP HP YearsAffected

GM 305 150 250 1984 Camaro/Firebird

Chev 327 250 250 1964 Chevelle

Chev 327 275 300 67-68 Chevy II

Chev 396 375 400 1969 Camaro

Chev 427 390 390 1967 Corvette

Chev 427 400 419 1967 Corvette

Chev 454 425 469 1971 Corvette

Chev 454 390 415 1970 Corvette

Chev 454 365 390 1971 Corvette

Chev 327 250 250 68 GT

Chev 327 250 265 1968 GT*

Chev 327 300 293 1966 GT

Chev 350 175 285 1987 GT

Chev 350 172-175 290 1968 GT

Chev 350 330 295 1996 GT

Chev 400 175 319 1975 GT

Mopar 318 150 235 1980 Aspen

Mopar 318 155 241 1980 Aspen

Mopar 340 240 258 1973 Duster

Mopar 340 275 268 1971 Demon

Mopar 340 275 276 1971 Duster

Mopar 360 245 265 1974 Duster

Mopar 360 245 274 1974 Dart

Mopar 340 240 262 1972 GT

Mopar 340 240 266 1972 GT

Mopar 340 240 275 1972 GT

Mopar 360 275 275 2009 GT

Mopar 426 425 505 1968 Cuda

Ford 302 235 235 1993 GT

Olds 400 180 324 1974 Calais

* = no such combination listed in the class guide.

Super Stock Index No Changes

Class

SS/BM

Ty Kwaiser · 12-19-2016, 10:32 PM

Wait, What! '65 289 Mustang now down to 209 hp? Hmmmmmmm

Coleydog · 12-20-2016, 12:48 PM

OEM NHRA NEW
383 330 69 Dart
Would the 69 Barracuda be the same? Since that is the route I'm going.

ALMACK · 12-20-2016, 01:22 PM

Quote:

Originally Posted by Coleydog

OEM NHRA NEW
383 330 69 Dart
Would the 69 Barracuda be the same? Since that is the route I'm going.

Yes, it appears to be the same: (with a replacement head)

Jeff Teuton · 12-20-2016, 03:55 PM

What motor is that in the Corvette 92,93 etc that got pushed up.?

GSlaton · 12-20-2016, 04:07 PM

Quote:

Originally Posted by Jeff Teuton

What motor is that in the Corvette 92,93 etc that got pushed up.?

LT1, all they did was make it match the 93-97. Same motor, it was introduced in the Corvette the year before the Camaro/Firebird got it.

Jeff Teuton · 12-20-2016, 04:33 PM

Thank you. Just being nosey you know.

nolongerracing · 12-20-2016, 11:02 PM

There are no 93, 97-98 Corvettes listed in the Classification Guide. So what are they "correcting to match" ?

[QUOTE=Bob Don;522747]

Chev 350 300 341 346 1992 Corvette*
*= correction to match 93, 97-98

12-19-2016, 03:45 PM	#1
Jack Matyas Live Reporter Join Date: Nov 2001 Location: Bethlehem , PA -Christmas City , USA Posts: 4,828 Likes: 336 Liked 1,578 Times in 322 Posts	NHRA year end horsepower numbers are out New NHRA horsepower numbers are out on NHRAracer - Merry Christmas ! ! ! __________________ Jack Matyas 1547 FS/C 2015 Camaro COPO # 62- 2012 Camaro Convertible COPO

12-19-2016, 04:26 PM	#2
Bob Don VIP Member Join Date: Oct 2002 Location: Greater Boston Posts: 1,476 Likes: 980 Liked 778 Times in 175 Posts	Re: NHRA year end horsepower numbers are out 2016 End of Year Stock, Super Stock Horsepower Adjustments Announced The following Stock/Super Stock horsepower changes were released December 19, 2016 produced by the Automatic Horsepower Factoring System (AHFS). This is the second of two scheduled horsepower adjustments for this year. All changes are effective January 1, 2017. It should be noted that these changes include only results produced by the AHFS, and do not include written letters or requests. Those changes are listed separately. The AHFS is a program based on actual run data compiled from all available runs at NHRA national events. The data-based format provides the ability to calculate average performances for any class and/or engine combination in Stock and Super Stock. The trigger point for the system is 1.00-second or more under the respective index, and must be produced on two different occasions. Engine-combination averages and class averages are then computed and analyzed to determine if a change is warranted. The amount of change is calculated on a stepped percentage basis. Where applicable, adjustments will be effective for the specific car model or body style being evaluated. An automatic adjustment is instituted outside the two-time a year process when a 1.20 and under run is recorded during any NHRA event. Any comments, thoughts, or requests must be sent in writing to: National Hot Rod Association; Technical Department; attn: AHFS; P.O. Box 5555, Glendora, CA 91740; or e-mail, AHFS@nhra.com or pcvengros@nhra.com Stock Horsepower Changes Complete for 2nd half rating period of 2016 Engine OEM NHRA New Make CID HP HP HP Years Affected Buick 350 175 262 266 73-74 Apollo Chev 262 170 196 199 1996 S-10 Chev 283 220 223 226 1966 Chevy II Chev 350 300 341 346 1992 Corvette* Chev 350 530 575 588 14-15 COPO Chev 396 390 420 430 13-15 COPO Chev 409 450 450 461 2016 COPO Chev 427 430 465 471 14-15 COPO Chev 427 450 461 472 14-15 COPO Dodge 345 305 337 342 09-10 Drag Pak Mopar 426 425 450 456 1964 Belvedere *= correction to match 93, 97-98 Super Stock Horsepower Changes Complete for 2nd half rating period of 2016 Engine OEM NHRA Make CID HP HP New HP Years Affected Dodge 426 450 456 462 09-10 Drag Pak Dodge 426 460 482 493 2015 Drag Pak Ford 330 435 504 516 2010 Cobra Jet __________________ Bob Don 128 SS

12-19-2016, 10:32 PM	#4
Ty Kwaiser Junior Member Join Date: May 2002 Location: Oakland, MI Posts: 70 Likes: 1 Liked 24 Times in 9 Posts	Re: NHRA year end horsepower numbers are out Wait, What! '65 289 Mustang now down to 209 hp? Hmmmmmmm Last edited by Ty Kwaiser; 12-19-2016 at 10:47 PM. Reason: Superstock

12-20-2016, 12:48 PM	#5
Coleydog Senior Member Join Date: Jul 2014 Posts: 561 Likes: 33 Liked 47 Times in 32 Posts	Re: NHRA year end horsepower numbers are out OEM NHRA NEW 383 330 69 Dart Would the 69 Barracuda be the same? Since that is the route I'm going.

12-20-2016, 03:55 PM	#7
Jeff Teuton VIP Member Join Date: Jan 2002 Location: Houma, LA Posts: 2,717 Likes: 2 Liked 326 Times in 50 Posts	Re: NHRA year end horsepower numbers are out What motor is that in the Corvette 92,93 etc that got pushed up.? __________________ Jeff Teuton 4022 STK

12-20-2016, 04:33 PM	#9
Jeff Teuton VIP Member Join Date: Jan 2002 Location: Houma, LA Posts: 2,717 Likes: 2 Liked 326 Times in 50 Posts	Re: NHRA year end horsepower numbers are out Thank you. Just being nosey you know. __________________ Jeff Teuton 4022 STK

12-20-2016, 11:02 PM	#10
nolongerracing Member Join Date: Oct 2006 Posts: 163 Likes: 2 Liked 67 Times in 24 Posts	Re: NHRA year end horsepower numbers are out There are no 93, 97-98 Corvettes listed in the Classification Guide. So what are they "correcting to match" ? [QUOTE=Bob Don;522747] Chev 350 300 341 346 1992 Corvette* *= correction to match 93, 97-98