Cylinder Heads & Rocker Kit, Aluminium, VN V8 Style
Proflow Cylinder Heads & Rocker Kit, SuperMax Aluminium,VN - VT Style, Complete, 590 HP Out of Box, 63cc Chamber, 200cc Intake Runner, Pair
Proflow Holden VN V8 SuperMax Aluminium Heads & Rocker Kit Complete
Available for Carby or EFI Versions - Select your version from drop down
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 | 8 mm |
| 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. |
Proflow SuperMax Pro Roller Rockers Kit - Holden V8 VN 5.0L Carby or EFI , Proflow or Edelbrock Cylinder Heads
Proflow offers SuperMax Series shaft-mount rocker arm systems fulfill the needs of successful racers and performance engine builders at every level. The SuperMax rocker arms are made from quality 2024 aluminium extrusions built to withstand over 850lbs of max open spring pressures! This kit includes CNC-machined billet steel pedestals, and ground steel alloy rocker shafts, which come complete with all the components and hardware required for a professional installation, including shims. These 2024 custom aluminum formulas are designed for the Serious racer and have had extensive RND and testing conducted before release, meeting all nessasary performance requirements. SuperMax Series aluminum shaft rocker arms are available for a variety of engine applications.
Specifications:
- Suits 5.0L VN style heads
- Shaft mount full roller style
- 1.65 Ratio
- 7/16" Stud Size
- 850 lbs max open pressure
- FEA designed and tested
- Mirror polished roller tips for smooth operation
- Socket head cap screw mounting studs
- Extruded from aircraft grade 2024-T6 aluminium
Application:
- Edelbrock Performer VN 5.0L Heads
- Proflow SuperMax VN 5.0L Heads
