Proflow Cylinder Heads & Rocker Kit Fits Holden Pair PFEAHH20063-RRK6
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Proflow Cylinder Heads & Rocker Kit Fits Holden Pair
Proflow Holden Commodore VN SuperMax Aluminium Heads and Rocker Kit Complete
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 with a large choice of Engine, for SB and BB Chevrolet, LS Chev Holden Ford SB 289-351W, 302,351 Cleveland 2V and 3V and BB FE, and Chrysler SB and BB, phosphorous bronze valve guides, and ductile iron valve seats for use with unleaded gas. They're also end-milled and drilled for accessories. These fully assembled heads have stainless steel valves and high performance valve springs.Perfect for your Mild or High performance Hot Rod.
| 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 Degree |
| 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