501 Series Performance Heads 42 by 37.5 Valves, Pair 500 This is a new set

This is a new set of 94mm Racing Long Thick Wall Type 1 Cylinder Set

8L type 4 Casting with Breather using 8mm valve stems it is available with Single high rev springs

The 35mm Compression Height will work with larger stroked cranks 78

These heads feature:

Porsche 911 2

501 Series Performance Heads 42 by 37.5 Valves, Pair 500 This is a new setThis 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 42mm Intake and a Stainless Steel 35. 5mm Exhaust Valves, with Harden Keepers, Chromoly retainers, and Single high rev springs. They areready to install. The 501 Series Castings come STD with: Increased material at the intake surface giving you the ability to make much bigger ports. A modernized Combustion chamber, for