VW 1600 Dual Port Performance Cylinder Heads, 40X35.5 "Pair"

Description: This is a brand new set of 2 high-performance cylinder heads for a VW Type 1, 2, or 3 dual port. Heads comes with stainless steel 40mm intake, stainless steel 35.5mm exhaust valves, harden keepers, chromoly retainers, and single high-rev springs. They are ready to install. Made from an AA 500 series casting, these come STD with clean flowing cooling vanes for maximum cooling through the head and around-the-intake ports for increased HP and overall cooling. These heads feature: A modernized combustion chamber for increased head flow & performance. A second full fin so you can fly cut your heads deeper to achieve almost any desired head CC volume needed. Blocked-off rocker stud bosses to eliminate the O-ring and stop possible oil leaks. Long-reach 3/4" spark plugs to reduce the chance of cracking between the valve seat and plug. Engine: VW Type 1, 2, and 3 1600 dual port Springs: Single or dual high-rev springs Valves: 40mm intake by 35.5mm exhaust Casting: AA Performance 500 Head CC's: 60 Plug Size: 12mm (Replacement NGK number is D8EA) Bore: 85.5 - works with 85.5,87 and 88 slip-in kits Bore: 92 - works with 88 thick wall, 90.5, and 92mm kits Bore: 94 - works with 92 thick walls K and M and 94mm kits