Proflow | SKU: PFEAHH20063-EFI

Proflow SuperMax Cylinder Heads, Aluminium, Holden Commodore VN EFI, Complete, 590 HP Out of Box, 63cc Chamber, 200cc Intake Runner, Pair - PFEAHH20063-EFI

Name: Proflow SuperMax Cylinder Heads, Aluminium, Holden Commodore VN EFI, Complete, 590 HP Out of Box, 63cc Chamber, 200cc Intake Runner, Pair - PFEAHH2...
Brand: Proflow
SKU: PFEAHH20063-EFI
Price: 4704.0 NZD
Availability: InStock

$4,704.00 NZD + GST

Shipping calculated at checkout.

Description

Part Number: PFEAHH20063-EFI

Proflow Holden Commodore VN SuperMax-EFI Aluminium Heads 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 & BB Chevrolet, LS Chev Holden Ford SB 289-351W, 302,351 Cleveland 2V & 3V & BB FE, and Chrysler SB & 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.

Must Use Proflow Shaft Mount Aluminium Rocker kit # PFERRK-6000

Note: Can use CC-4769-16 if your needing to run a smaller ID spring.

SPECIFICATIONS
Combustion Chamber	64 cc
Intake Port Volume	200 cc
Intake Port Dimensions	2.150” (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	0.650" (0.050" margin)
Rocker Stud Thread Size	7/16”-14
Valve Angle	3°
Deck Thickness	0.780”
Coil Bind	1.095"
Installed Height (int.)	1.792" @ 141 lbs
Installed Height (exh.)	1.780" @ 144 lbs
Spring Rate	331 lbs/in.