Quote:
Originally Posted by Chevy55
NHRA Tech Department makes corrections/updates to the Stock Car Classification Guide Jan. 13, 2023
The NHRA Technical Department recently made changes to the Class Guide.
Chev 66-69 396 325/324 change to 396 325/316
Chev 68-69 396 325/374 change to 396 325/363
Chev 68-69 396 325/384 change to 396 325/373
Chev 1968 396 350/340 change to 396 350/335
Chev 68-69 396 350/360 change to 396 350/358
Chev 68-69 396 350/370 change to 396 350/368
Dodge 1962 413 385/394 change to 413 385/390
https://www.nhraracer.com/content/general.asp?articleid=72710&zoneid=132
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Quite interesting what you posted, but you really should start another thread as I don't see that it has anything to do with LS1 factors.
Although it does look like they are consolidating factors and giving the engines the lower ones.
So the LS1 Firebirds that are at 381,should go back to 340 along with the Corvettes using the same logic.