This is our standard 80CFM Shredder head with lapped valves and hand assembled with a high RPM valvetrain that will support up to 0.400" lift at the valve and 8500+ rpms.
The following hardware is assembled into this ready-to-run head:
28.5mm stainless steel intake valve
24mm stainless steel exhaust valve
60lb dual springs installed at 0.947" (actual installed rate is around 35lbs on the seat)
Titanium retainers (weighs a touch less than 7071 aluminum but has more strength and much better fatigue resistance.)
Steel medium groove keepers
Lightweight lash caps
Steel pushrod guide plate
1.2:1 ratio 0.095" thick stamped steel rocker arms with studs, lash adjusters, and locking nuts. (308 cam gets to .369" lift, 315 gets to .378" lift)
Pair this head with a Dyno 315 cam and our 28mm carburetor kit for a 20hp capable engine.
