preferred copper head gasket thickness

Putting together my small chevy. We run NE1 / 7.0 Pro (maybe). I'm new to copper & o-rings. What is the preferred thickness of the gasket? i'm .015 in the hole, so really anything above .030 would provide enough p to h clearance. P to V isn't a concern (mild camshaft).

Looking for a good seal. I will be running about 25psi.

This is a 372" Little M, AFR alum head, littlefield 12 with steel rods.

Thanks for the input everyone.

 

For a hemi with a screw blower, I don't like running anything less than .050 thickness. If you are not running a whole pile of boost, and aren't likely to be detonating, I would think .040 gaskets would be fine.

 

we use 64 thou. flatout gaskets the RCC. on a blown small block 46lbs boost and run water threw block and heads.

 

I ran the .043 sce copper gaskets in my 375" smallblock chevy- motown block, afr head .... and I never had to replace them

P.S. GET RID OF THE STEEL RODS!

 

o rings

if you are running aluminum heads, put the o ring in the head and the receiver groove in the block.

 

PP, good to see ya. Miss you on HRE.

Thanks Blown375. that is what i was looking for!

I appreciate all the replies. I'll get some SCE gaskets ordered.

 

Ya, this winter, the steel rods are going to swapped out i think.