BILLET RACE HEADS

We are offering Billet heads for multiple engine platforms.

From Stock Twin Cam bolt pattern to the larger S&S 143/145 and even the Big Ultima Evolution 140 . They also have a range of different valve sizes to accommodate any given application.

Twin Cam

These will work on a 4.135″ bore size or larger.

Valve sizes start out at 2.150″ Intake and 1.750″ Exhaust on the 4.135″ bore. Can go up to 2.250″ and 1.800″ on bores up to 4.250″

S&S 143/145 & Ultima 140 Bolt Patterns

These heads work on the 4.375″ and up bore sizes.

Valve sizes start out at 2.250″ Intake and 1.800″ Exhaust up to 2.450″ and 1.900″ for very large displacement racing type engines with bores up to 4.500″

They are available with either Twin Cam or Evolution pushrod geometries.

We are currently working on a couple other versions for S&S 4″ bore 107/113 engines that have been converted to 4.125″ bores and a S&S T124″ bolt pattern offerings.