I have a 87 Trans Am that I installed a 350 in and want to get a custom chip made up but need to find out the compression on the engine. The heads are cast iron L98 off a 92 Camaro whats the cc's on these heads? Also I used Gm flat top pistons does anyone know what the piston top volume is in cc? I used a felpro gasket set for a 87 TPI so I'm not sure what the thickness on the head gasket is but I belive I can fined it out. Any one have any idea on what it may be? Is there anything else I need to know on how to figure the compression? Any help will be very helpfull. Thanks, Jason

 

What was the gasket number on the head gaskets?

Are the pistons 2 or 4 valve reliefs?

Was your block decked at all?



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The pistons have 4 valve reliefs, the block was not decked and I'm not sure what the p/n is one the gasket I'll find that out on monday.