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. They have 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. Use CC-6051 & 6053 valves

SPECIFICATIONS
Combustion Chamber   70 cc
Intake Port Volume   276 cc
Exhaust Port Volume   90 cc
Exhaust Port Dimensions   1.47” (H) x 1.65” (W)
Spark Plug Location   OEM
Intake Valve Diameter   2.165”
Exhaust Valve Diameter   1.59”
Valve Stem Diameter   8 mm
Valve Spring Pocket ID   1.30”
Valve Guide OD   0.502” (0.560” at base)
Maximum Valve Lift   0.750”
Rocker Stud Thread Size   OE LS3 Style
Valve Angle   15°
Deck Thickness   0.625”

 

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. They have 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. Use CC-6051 & 6053 valves

SPECIFICATIONS
Combustion Chamber   70 cc
Intake Port Volume   276 cc
Exhaust Port Volume   90 cc
Exhaust Port Dimensions   1.47” (H) x 1.65” (W)
Spark Plug Location   OEM
Intake Valve Diameter   2.165”
Exhaust Valve Diameter   1.59”
Valve Stem Diameter   8 mm
Valve Spring Pocket ID   1.30”
Valve Guide OD   0.502” (0.560” at base)
Maximum Valve Lift   0.750”
Rocker Stud Thread Size   OE LS3 Style
Valve Angle   15°
Deck Thickness   0.625”

 

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