Description:

Attached is the flow sheet from WCCH on these heads and comments from previous owner below:

“Heads were custom CNC’d by flowtech induction off AFR 225 blanks. 64CC chamber, as I recall they opened up a bit to 64.8CC. I had West Coast Cylinder Head bench test….report attached.”

Also you will see a brass sleeve on the intake side runners, the why:

“After all this was sorted out, I was setting the valve adjusters when I noted the push rods hitting the sides of the push rod holes. After discussing this with Ed Curtis, I bought a few reamers thinking I could open them up slightly. Unfortunately in a couple spots the wall thickness of the runners became paper thin and one broke through (barely). I sent the heads back to flowtech and he installed the tubes.”

This setup made 652whp/625wtq on around 13psi from a P1SC-1 (spinning blower max impeller RPM)

T&D 1.7 shaft rockers (P/N 20042) which I’m told work on these and OEM cathedral heads according to T&D. ($1542 new) SOLD

Also included are the valve cover spacers to work with OEM covers otherwise you will need taller covers.

$1500 + shipping

FTI cam, see specs in attached image.

$200 shipped

Items that I may consider for trade/partial trade:

LSA, or forged stock stroke crank (K1, Callies, Lunati)
ID1300 or 1700 injectors
Holley Dominator ECU only
Billet Specialties Street lite wheel (15x10 6.5”-7”BS 5x4.75BC)
GM AXN 14 bolt rear axle (05-07 VHO/SSS year) or GM 88-93 14-bolt bolt axle