SuperMax Cylinder Heads, Aluminium, Holden VN V8 Carb- HEADS ONLY
$3,200.00Price
SuperMax Cylinder Heads, Aluminium, Holden Commodore VN Carb, Complete, 590 HP Out of Box, 63cc Chamber, 200cc Intake Runner, Pair
Proflow does not sacrifice quality for a low price--you get both with our aluminium cylinder heads. The lightweight heads are cast from A-356 aluminium alloy
SPECIFICATIONS | |
| Combustion Chamber | 64 cc |
| Intake Port Volume | 200 cc |
| Intake Port Dimensions | 2.170” (H) x 1.290” (W) |
| Exhaust Port Volume | 72 cc |
| Exhaust Port Dimensions | 1.440” (H) x 1.270” (W) |
| Spark Plug Location | OEM |
| Intake Valve Diameter | 2.020” |
| Valve Material | Stainless Steel 21-4N + 4Cr9Si2 |
| Exhaust Valve Diameter | 1.60” |
| Valve Stem Diameter | 5/16" |
| Valve Spring Pocket ID | 1.650” |
| Valve Guide OD | 0.530” (0.560" at base) |
| Maximum Valve Lift | 0.550” (0.050" margin) |
| Rocker Stud Thread Size | 7/16”-14 |
| Valve Angle | 3 |
| Deck Thickness | 0.790” |
| Coil Bind | 1.205" |
| Installed Height (int.) | 1.805" @ 118 lbs |
| Installed Height (exh.) | 1.788" @ 123 lbs |
| Spring Rate | 331 lbs/in. |
