Dual Tight Quench Head

Billet Smallbore Shovelheads

All heads come with Dual Decompressor ports for super easy starting.

Billet heads are available in 4 configurations.

Stage 1-

Heads come set up with a 1.94 Intake valve and a tight throat giving 262 cfm @ .650 lift rated in 28" of depression. A stock shovel head flows roughly 194cfm. You are gaining almost 70cfm over stock! This head can support 108hp in a 93" motor with 256 degrees cam timing and 11.1 compression. This head is intended as a drop on replacement and will work with most exhisting cam profiles. This head is recommended for most applications.
A properly built 80" with 256 cam timing and 11.1 compression and a 44mm carb and good exhaust should be able to hit 100+hp.
$2139.00

Stage 2-

Heads come set up with a 1.94 valve and a 1.770 Throat giving you 275cfm + at .650 lift. This head is moving some real air and will make some real topend horsepower numbers. On smaller motors you will require camshafts that have overlap of 8-12 degrees once you exceed 240 duration and 42mm of carburation and a straight through exhaust.
With this overlap comes wider lobe centers which requires higher compression ratios to build the same cylinder pressure as narrower cams. 93" motors will easily punch 115hp plus and 100tq properly set up. Great choice for 103" and up. Combine with with a low overlap cam for great throttle response. Big inch engines can use a regular style cam
$2139.00

Stage 3-

Heads come with a 2.02 valve with 1.850 throat giving you 285cfm + at .650 lift. Cross section can be varied upon request. As a general rule the smaller the cross section the lower the engine makes power, open the cross section and the power band will climb. Generally more suited for 103" and up. But would build 120hp plus on a properly set up 93" motor. Loves compression and will build killer power even with 240degree duration cam. Larger seat is added and bowls are worked to fit seat for the additional flow and each head is flow tested.
$2399.00

Stage 4-

Heads come with a 2.100 valve and will flow over 300cfm @ .650 lift. Generally suited for 114" motors or all out small engines. Small engines should maintain 200lbs cranking compression for best results. Larger seat installed , bowls are ported and heads flow tested. Cross section opened up for engines of 114" upon request. This is as baddass as it comes.
$2599.00

All heads come hand blended and the chambers hand blended. Properly set up engines should be able to run at 210lbs cranking compression with pump gas and no detonation.