501 Series Performance Heads 44 by 37.5 Valves, Pair opt-weld-fan 4L PICK UP 1985-1995

4L PICK UP 1985-1995

Bolt Type: 3/8

The Compression ratio is 10

Standard Beetle 67-77 / Ghia 67-74 / Thing 73-74

501 Series Performance Heads 44 by 37.5 Valves, Pair opt-weld-fan 4L PICK UP 1985-1995This is a brand new Set of 501 High Performance Cylinder Heads for a VW Type 1 2 or 3 Dual Port. Heads comes with Stainless Steel 44mm Intake and a Stainless Steel 37. 5mm Exhaust Valves, with Harden Keepers, Chromoly retainers, and Single high rev springs. They areready to install. The 501 Series Castings come STD with: Increasedmaterialat the intakesurfacegivingyou theabilityto make much bigger ports. Amodernized Combustionchamber, for increased