Aluminum 72cc Round Port Head Builder Kit, with Speedmaster Castings

Choose your options and we will do the rest to make sure you get the right parts to build custom Butler Aluminum heads. We can help get the parts you need for a full rebuild.

Includes the following;

Speedmaster 72cc Aluminum Head Castings

All Machine Work done in house by Butler including Valve Job and Hone and Fit Guides

Ferrea Stainless Intake and Exhaust Valves with stock install height
-Option for Upgraded 1.77 Exh Valves

Matching Crower, Edelbrock, DHP or Comp Springs matched to your cam

Chromoly Retainers and Locks

Comp Spring Locators

PEP Valve Stem Seals

Intake Gaskets

Exhaust Gaskets