C3 Yates / Penske Racing Heads + Ported Roush Intake – Fresh, NOS Ready
C3 Yates / Penske Racing heads, freshened at Snake Power with no runs since refresh. Penske Port Program. Never hurt or blown up.
2.100” Del West titanium intake valves (5/16 stem), 55° VJ
1.600” Del West titanium exhaust valves (11/32 stem), 55° VJ
CHE copper beryllium seats (intake & exhaust)
51cc chambers
PSI 1248 dual springs
Del West titanium retainers & captive locks designed for hard tip TY valves
Positive valve seals
1/2 step washers press-fit in each head bolt hole
Intake:
Jack Roush 4150-style intake, ported & port-matched to heads
Drilled/tapped with welded bungs for nitrous nozzles
Nozzles included
intake manifold is done for 9.2 deck
Port-matched spacer plates included to run on 9.5 deck
No rockers included.
No flow numbers.
Proven combo: Made 1.94 HP per inch on a 458” NOS engine.
Can be used for NOS or N/A.
