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Old 02-15-2015, 11:07 AM   #7
Alan Roehrich
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Location: Murfreesboro TN
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Default Re: ZL1 factored HP and valve springs

Quote:
Originally Posted by Al Loyrat View Post
When I ordered the cam from Chris at Comp for stock class dual springs with a damper were allowed for the ZL1 in the specs and were sent with the cam. Are you saying I've got to change to a single spring now?


Yes, it is definitely tough and expensive but I got it done. Didn't you run a 427 (ZL1 combo?) at one time?

I'm saying the NHRA no longer cares if your spring configuration matches OE spec or the guide. Chris or Tim may have a better spring for you.


Kevin Cradduck and I have the parts for a ZL-1, we set it aside when the new cars entered the picture. We will get it out of mothballs and finish it now. Jimmy Bridges gets after me on a weekly basis telling me it is what should be in Kevin's car. We will start this season (a late start) with a fresh aluminum head 396/375 in both cars. We previously ran the 427/425 in the orange stocker, with the aluminum heads, at 435HP.
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