When to choose cylinder heads for a small block Ford engine?
When to choose cylinder heads for a small block Ford engine? Throw in a high-performance, high-lift camshaft, and engine failure becomes probable. Whenever you’re shopping cylinder heads for a 289/302-ci engine, you will want early 289 castings with the pushrod guides cast into the cylinder head. This means using a cylinder head casting prior to April/May of 1966. When did Ford change cylinder heads and valvetrains? Beginning May 2, 1966, Ford changed both cylinder heads and valvetrains on 289 engines. Prior to this date in production, Ford had pushrod guide holes machined into the castings. However, from May 2, 1966...