CLASS RACER FORUM - What year did stock stop using factory valve springs

CLASS RACER FORUM (https://classracer.com/classforum/index.php)

- Stock and Super Stock Tech (https://classracer.com/classforum/forumdisplay.php?f=4)

- - What year did stock stop using factory valve springs (https://classracer.com/classforum/showthread.php?t=56721)

Bernhard

02-04-2015 02:05 PM

What year did stock stop using factory valve springs

What was the last year that NHRA stock class used factory valve spring pressures?

Travis Miller

02-05-2015 06:01 PM

Re: What year did stock stop using factory valve springs

1987 was the last year NHRA required the valve springs in Stock to meet factory specs. It was also the last year a camshaft in Stock had to meet duration and overlap specs.

All times are GMT -4. The time now is 09:33 AM.

Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2025, vBulletin Solutions Inc.
Copyright Class Racer.com. All Rights Reserved. Designated trademarks and brands are the property of their respective owners.