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02-14-2015, 11:41 PM
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Junior Member
Join Date: Feb 2010
Posts: 39
Likes: 0
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ZL1 factored HP and valve springs
Couldn't get into factored HP for 1969 ZL1 on NHRA website. Anybody know what it is? It's a stick car. Also, when I was looking at the specs for this engine the other day, it said outer spring with damper. It used to say outer and inner spring with damper. I know the factory used inner/outer with a damper back in 1969.
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