Head gasket bore size has to be at least as large as the cylinder, or the gasket edge hangs into the bore and burns. At 4.500 in. this set covers the common overbore range on 385-series big-block Fords, and the 0.048 in. thickness is a known quantity for calculating quench and compression rather than a guess.

Edelbrock 7314 Head Gasket Set Specifications:

• Two piece cylinder head gasket set, gray, performance grade.
• 4.500 in. cylinder bore diameter.
• 0.048 in. thickness.
• Fits big-block Ford engines, covering 1968-1987 Ford, Lincoln and Mercury.
• Gasket sealant is not included. Verify your actual bore size before ordering.