Engine Parts: Small Block Aluminum Fast Burn Heads Chevrolet
Angled spark plugs 5/8quot hex, 3/4quot reach, tapered plugs 1.48quot valve spring seat diameter. Use head gaskets with stainlesssteel fire rings. Raised, machined rocker rails. .530quot maximum valve lift without modifi ions Screwin studs 3/8quot top, 7/16quot bottom New timeserts prevent oil migration through rocker studs.