The 10067353 Goodwrench engine is 8.5:1.
My old 383 was based on that block...we did deck the block during the overhaul and the block deck was
terrible. Putting a tin head gasket on may be asking for trouble.
Here are the specs for reference.
http://www.jegs.com/i/Chevrolet+Perf...67353/10002/-1