Quote Originally Posted by rumrumm
Assuming this is going to be a drag strip car, you would need to O-ring the block, convert to steel main caps, use a light weight forged crankshaft, H-beam rods, a high quality forged piston (e.g., JE, Ross, etc.) with full floating pins, a single plane manifold with a Holley carburetor, solid roller cam, stud girtle. Because a 13:1 compression engine is going to put a lot of stress on an engine, you are going to have to build it appropriately. Like the commercial states, "You can pay me now, or pay me later." Good luck!
At 13 to 1 a good Fel Pro head 1003 gasket is just fine.