is the head gasket thinner for the stock iron heads? anyone have any idea what compression would be if i used the gaskets for the iron head?

 

Do not use Iron Head gaskets.... They have metallic rings around the gaskets that could damage the heads. I have alluminum vette heads on my TPI and got myself a set of Felpro 1010 head gaskets and love em.

 

Using head gaskets not designed for aluminum heads is a bad idea. The fire rings dig into the softer aluminum surface, a process called brinnelling.

Fel Pro makes part# 1003 and 1010 gaskets for Al heads, GM sells a part# which is thinner and has smaller bore diameter if you're looking for more compression. SCE sells solid copper head gaskets in even more variations of compressed thickness, if you don't mind using liquid sealant.

Check the listings on www.sdpc2000.com for specifics on the Fel Pro and GM pieces.

 

I will second the 1010. Its what I have been running on my vette heads for years, without an issue.

 

I'll third the 1010s. I run them on my corvette without issue. They are great and also do not leave anything on the block or heads if you pull the heads later on.