Home > Parts >

Head, Racing, 420 Hemi Big Valve
Head, Racing, 420 Hemi Big Valve

Alternative Views:

Heads are custom finished to order and may take 2 to 3 days to ship.
Our Price: $274.99

Stock Status:In Stock


Select Valve Package

Valve Package*:
Single Springs with Aluminum Retainers
Dual Springs with Titanium Retainers [+$31.2]
Select Amount to be Milled

Do Not Mill
Mill Head .025"
Mill Head .040"

Description -
Ready-to-Go 420 Hemi Race Head
Heads are ported, bead blasted, flowed, and milled. Oversize stainless valves. Heads can be fitted with either single or dual springs. Single springs recommended for 280 and smaller cams. Dual for 306 and larger cams.

  • Ported, polished, and bead blasted
  • 40mm stainless intake and 34mm exhaust valves
  • Aluminum or titanium retainers
  • Split keepers
  • HD single or dual springs
  • Valve spring shims
  • 3-angle valve job
  • Milled to specs

Rocker arms not included. Heads are typically built to order - allow 1-3 days to ship. Due to valve size, valve face will extend beyond surface of head if head is milled.
Valve-to-piston interference can be an issue with hemi heads and must be checked. Pistons may require notching.

Share your knowledge of this product. Be the first to write a review »