EngineQuest Performance Cast Iron Cylinder Head - Bare - 1.840 / 1.5 in Valves - 170 cc Intake - Small Block Chevy Metric O-Ring to AN Fittings If it is not correct

If it is not correct you can either re-pin it or use the supplied plug

adjustment style

They offer manual

8 oz (646 g)

EngineQuest Performance Cast Iron Cylinder Head - Bare - 1.840 / 1.5 in Valves - 170 cc Intake - Small Block Chevy Metric O-Ring to AN Fittings If it is not correctEngineQuest Cylinder heads are manufactured to meet or exceed the OEM specifications. Product Description: Cylinder Head Performance Bare 1. 840 1. 500 in Valves 170 cc Intake 58 cc Chamber Straight Plug Iron Small Block Chevy EngineQuest (EQ) specializes in unique, out of production or hard to find engine parts for all things automotive including import or domestic and gas or diesel. We know heads, crankshafts and parts, and we can tell you which