|
Stock,
Super Stock horsepower responses
 The
NHRA Stock/Super Stock Committee has reviewed
written requests from Sportsman racers in its
evaluation of specific Stock and Super Stock
horsepower adjustments and has made the
adjustments noted in the chart below. The
changes are effective June 17, 2002. The review
is part of NHRA's commitment to evaluating
requests from the Sportsman racing community and
is an important step in NHRA's Automatic
Horsepower Factoring System (AHFS).
The
list represents letters received by May 20,
2002. Letters received after that date will be
addressed during the next review.
Requests
for horsepower changes or reviews may be sent
via e-mail to Bob Lang (Blang@nhra.com)
or Curt LaShure (clashure@nhra.com);
via fax, (215) 343-0159; or via mail to NHRA
Stock/Super Stock Committee, 366 Easton Road,
Warrington, PA 18976.
|
Super
Stock Horsepower Changes
|
| Manufacturer |
CID |
OEM HP |
NHRA HP |
HP
Adjustment |
New HP |
Years
Affected |
| AMC |
343 |
280 |
270 |
-5 |
265 |
1967-69 |
| AMC |
360 |
290 |
290 |
-10 |
280 |
1970 |
| Buick |
455 |
315 |
315 |
-22 |
293 |
1971 |
| Chevy |
283 |
220 |
230 |
-5 |
225 |
1957-61 |
| Chevy |
282 |
220 |
235 |
-5 |
230 |
1964-66 |
| Chevy |
305 |
150-200 |
260 |
-5 |
255 |
1983-87 |
| Chevy |
327 |
250 |
265 |
-5 |
260 |
1965 (SS
only) |
| Chevy |
327 |
275 |
300 |
-5 |
295 |
1966-67
(SS only) |
| Chevy |
327 |
300 |
300 |
-5 |
295 |
1968 (SS
only) |
| Chevy |
327 |
300 |
290 |
-10 |
280 |
1962-67
(SS only) |
| Chevy |
327 |
300 |
290 |
-5 |
285 |
1962-67 (GT
only) |
| Chevy |
350 |
175 |
290 |
-5 |
285 |
1982 |
| Chevy |
350 |
155-270 |
295 |
-5 |
290 |
1971-81 |
| Chevy |
350 |
255 |
295 |
-5 |
290 |
1969 |
| Chevy |
350 |
295-300 |
315 |
-5 |
310 |
1967-70 |
| Chevy |
427 |
390 |
395 |
-5 |
390 |
1967 |
| Chevy |
427 |
425 |
440 |
-5 |
435 |
1966-69 |
| Chevy |
454 |
345 |
400 |
-10 |
390 |
1970 |
| Dodge |
340 |
275 |
295 |
-5 |
290 |
1971
(Plymouth) |
| Dodge |
383 |
280-335 |
310 |
-10 |
300 |
1963-71
(Chrysler/Plymouth) |
| Ford |
289 |
210 |
215 |
-5 |
210 |
1964 (SS
only) |
| Ford |
302 |
230 |
235 |
-10 |
225 |
1968 |
| Ford |
302 |
290 |
305 |
-10 |
295 |
1969-70 |
| Ford |
427 |
425 |
440 |
-10 |
430 |
1966-67 |
| Olds |
305 |
145-180 |
255 |
-5 |
250 |
1979-84 |
| Plymouth |
340 |
240 |
275 |
-5 |
270 |
1972-73
(Dodge) |
| Plymouth |
360 |
175 |
278 |
-5 |
273 |
1974-80
(Chrysler/Dodge) |
| Pontiac |
400 |
225 |
295 |
-5 |
290 |
1974 |
| Pontiac |
455 |
250 |
315 |
-5 |
310 |
1973-74 |
| Pontiac |
400 |
340-350 |
340 |
-10 |
330 |
1968-69 |
|
Stock
Horsepower Changes
|
| Manufacturer |
CID |
OEM HP |
NHRA HP |
HP
Adjustment |
New HP |
Years
Affected |
| AMC |
232 |
155 |
155 |
-10 |
145 |
1968-70 |
| Chevy |
283 |
195 |
195 |
-20 |
175 |
1963-67 |
| Chevy |
327 |
340 |
340 |
-65 |
275 |
1962-63 |
| Chevy |
327 |
360 |
360 |
-75 |
285 |
1962-63 |
| Chevy |
427 |
435 |
480 |
-45 |
435 |
1967-69 |
| Chevy |
454 |
450 |
460 |
-10 |
450 |
1970 |
| Dodge |
318 |
120-230 |
230 |
-35 |
195 |
1967-68
(Chrysler/Plymouth) |
| Dodge |
318 |
150-165 |
240 |
-10 |
230 |
1981-83
(Chrysler/Plymouth) |
| Olds |
307 |
140-180 |
245 |
-5 |
240 |
1980-90 |
| Olds |
455 |
365-370 |
365 |
-5 |
360 |
1970 |
| Plymouth |
273 |
235 |
230 |
-10 |
220 |
1965-67
(Dodge) |
| Pontiac |
307 |
130-200 |
200 |
-5 |
195 |
1971-72 |
| Ford |
428 |
335 |
375 |
+5 |
380 |
1968
Shelby (F5WE-A head only) |
| Ford |
428 |
335 |
375 |
+5 |
380 |
1968-70
(F5WE-A head only) |
|
Stock/Super
Stock Horsepower No Changes
|
| Manufacturer |
CID |
OEM HP |
NHRA HP |
Years
Affected |
Class |
| Chevy |
327 |
275 |
270 |
1967 |
Stock |
| Chevy |
350 |
270 |
270 |
1971 |
Stock |
| Chevy |
427 |
430 |
470 |
1969 |
Stock |
| Dodge |
360 |
200 |
280 |
1974 |
Stock |
| Dodge |
360 |
245 |
305 |
1974 |
Stock |
| Ford |
302 |
235 |
248 |
1995 |
Stock |
| Ford |
351 |
266 |
303 |
1973 |
Stock |
| Ford |
351 |
275 |
325 |
1972 |
Stock |
| Ford |
351 |
280 |
315 |
1971 |
Stock |
| Ford |
352 |
250 |
250 |
1964 |
Stock |
| Plymouth |
340 |
240 |
285 |
1972 |
Stock |
| Pontiac |
301 |
150 |
200 |
1979 |
Stock |
| Pontiac |
455 |
250 |
320 |
1972 |
Stock |
| Cadillac |
425 |
180 |
240 |
1971 |
Super
Stock |
| Chevy |
400 |
180 |
300 |
1974 |
Super
Stock |
|
