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


 
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Heads are custom finished to order and may take 2 to 3 days to ship.
Our Price: $339.99

Stock Status:(Out of Stock)
Part #: HEAD-RACING-420HEMI

Select Valve Package

Valve Package*:
Single Springs with Aluminum Retainers
Dual Springs with Titanium Retainers [+$29]
Select Amount to be Milled

Do not Mill
Mill Head .025
Mill Head .050
Mill Head .065
Mill Head .080
Mill Head .100
Mill Head .120 (not recommended)

Qty:
Description -
 

Ready to go Race Head

420 Hemi.

Heads are ported, bead blasted, flowed, & 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.

Includes:

  • Ported, Polished, & Bead Blasted
  • 40mm Stainless Intake & 34mm Exhaust Valves
  • Aluminum or Titanium Retainers
  • Split Keepers
  • HD single or dual springs
  • Valve Spring Shims
  • 3 angle Valve job
  • Milled to spec

Rocker arms not included

Heads are typically built to order, Rocker arms not included.

Allow 1 to 3 days to ship

WARNING: Valve to piston interference can be an issue with Hemi heads and must be checked. Pistons may require notching.

Due to Valve size, valve face will extend beyond surface of head if head is milled


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