Original design Edelbrock flathead cylinder heads for Fords and Mercurys.
Rugged, ribbed internally and externally, with a large water capacity and excellent breathing characteristics.
Made of A356 aluminum and T-6 tempered.
8.0:1 compression ratio on blocks with a 3/16" base relief (stock bore and stroke).
Compression ratio increase is approximately 3/10 of a percent with each 1/8" stroke
1939-48 Use Victor copper gasket mfr. #3036
1939-48 Use Fel-Pro® copper gasket mfr. #7548