Originally Posted by Clanton
Interesting info.That is a lot to tighten up when the spec may only be .020
Originally Posted by Thumperdart
I always tighten mine up .008-.010 just because and never an issue. As far as performance never compared back to back but make things quieter for sure....




.020 is a tight spec for most cams. If I remember right I ended up at .008 COLD on my Keith Black block and 440-1 heads. Lots of growth with that combo but I'm usually at .008-.010 like thumper said with a cast iron block and aluminum heads.

1970 Duster
Edelbrock headed 408
5.984@112.52
422 Indy headed small block
5.982@112.56 mph
9.42@138.27

Livin and lovin life one day at a time