Ready to go Race Head using aftermarket GX390 style large port casting. Heads are ported, bead blasted, flowed, & milled. Oversize Stainless Valves. Heads can be fitted with either single or dual springs. Single Springs recommended for 306 and smaller cams. Dual for 307 and larger cams.
Includes
Ported, Polished, & Bead Blasted
Stainless Intake & Exhaust Valves
Aluminum or Titanium Retainers
Split Keepers
HD single or dual springs
Valve Spring Shims
3 angle Valve job
Milled to spec
Heads are typically built to order, Allow 1 to 3 days to ship
