Proflow Holden Commodore VN SuperMax 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. The fully assembled heads have stainless steel valves, High Performance valve springs, 7 degree valve locks, rocker arm studs, and guideplates. Perfect for your Mild or High performance Hot Rod.

Specifications:

• Material: A356 Aluminium
• Combustion Chamber: 62cc
• Intake Port Volume: 210cc
• Intake Port Dimension: Height -2.170 – Width – 1.285
• Exhaust Port Volume: 72cc
• Exhaust Port Dimension: Height – 1.450” – Width – 1.283”
• Exhaust Port Location: OEM
• Spark Plug Location: OEM
• Intake Valve Dimensions: 2.020
• Exhaust Valve Diameter: 1.60"
• Valve Stem Diameter: 8mm
• Valve Spring Diameter:
• Maximum Valve Lift:
• Spring Installed Height:
• Valve Spring Pocket I.D.:
• Valve Guide Material: Manganese Bronze
• Valve Guide O.D.: .490" (.560"at base)
• Rocker Stud Thread Size: 7/16" x 14
• Valve Angle: 20
• Deck Thickness: .750"