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.
This BBC cylinder head is recommended for agressive street or street/strip applications with displacements up to 540 cubic inches, operating at or below 6800 RPM. 1.625 O.D. Solid Roller, 275lbs on seat, .850 Maximum Lift.
SPECIFICATIONS |
|
Combustion Chamber | 120 cc |
Intake Port Volume | 320 cc |
Intake Port Dimensions | 2.45” (H) x 1.75” (W) |
Exhaust Port Volume | 125 cc |
Exhaust Port Dimensions | 1.75” (H) x 2.00 (W) |
Spark Plug Location | Angled |
Intake Valve Diameter | 2.25” |
Exhaust Valve Diameter | 1.88” |
Valve Stem Diameter | 11/32” |
Valve Spring Pocket ID | 1.735” |
Valve Guide OD | 0.530” (0.570” at base) |
Maximum Valve Lift | 0.750” |
Rocker Stud Thread Size | 7/16”-14 |
Valve Angle | 24° Intake/15° Exhaust |
Deck Thickness | 0.750” |
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.
This BBC cylinder head is recommended for agressive street or street/strip applications with displacements up to 540 cubic inches, operating at or below 6800 RPM. 1.625 O.D. Solid Roller, 275lbs on seat, .850 Maximum Lift.
SPECIFICATIONS |
|
Combustion Chamber | 120 cc |
Intake Port Volume | 320 cc |
Intake Port Dimensions | 2.45” (H) x 1.75” (W) |
Exhaust Port Volume | 125 cc |
Exhaust Port Dimensions | 1.75” (H) x 2.00 (W) |
Spark Plug Location | Angled |
Intake Valve Diameter | 2.25” |
Exhaust Valve Diameter | 1.88” |
Valve Stem Diameter | 11/32” |
Valve Spring Pocket ID | 1.735” |
Valve Guide OD | 0.530” (0.570” at base) |
Maximum Valve Lift | 0.750” |
Rocker Stud Thread Size | 7/16”-14 |
Valve Angle | 24° Intake/15° Exhaust |
Deck Thickness | 0.750” |