SBC 4" head gasket ?

[rod]

I am working on this 327 + 60 which for the time will be a bracket engine. [it will be a 350 Horse 327 which hopefully will go in a '65 Chevelle 300 2 dr.]
anyway, this engine will go 60 over. the cheap blue Fel-Pro gaskets go right to the edge of a 30 over cylinder now. i checked several other brands, Mr. G, old Fel-Pro, Rocket, and they all look the same. even a used 400 gasket comes close.
So my ? is how close is too close and also the reverse, how big a gasket bore is too big?

Thanks Rod in AZ

[Jim Hanig]

Rod there are many 4.060 gaskets , UNless the chamfer at the top of the block is extra large the 4.100 GM gasket should work,I try to keep the gasket bore as tight as i can. I would not have any more than .060 bigger. Stockers need all the comp they can get. Jim

[james schaechter]

Originally Posted by rod

I am working on this 327 + 60 which for the time will be a bracket engine. [it will be a 350 Horse 327 which hopefully will go in a '65 Chevelle 300 2 dr.]
anyway, this engine will go 60 over. the cheap blue Fel-Pro gaskets go right to the edge of a 30 over cylinder now. i checked several other brands, Mr. G, old Fel-Pro, Rocket, and they all look the same. even a used 400 gasket comes close.
So my ? is how close is too close and also the reverse, how big a gasket bore is too big?

Thanks Rod in AZ

I use Cometic gaskets on our engines. They can be ordered to thickness and bore size. I re use them a few times without any problems.
We have 327 350 hp among others in our 66 Nova stocker

[carl hinkson]

If your using a performance gasket those blocks sometimes require an extra hole drilled in deck. This link applies to all SBC' if using a a peformance gasket.

http://www.chevyhiperformance.com/te...cks/index.html