Cylinder Heads, Aluminum, Assembled 58cc Chamber, 205cc Intake Runner, SB Ford 289, 302, 351W, Pair
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.
- Material: A356 Aluminium
- Combustion Chamber: 58cc
- Intake Port Volume: 205cc
- Intake Port Dimension: 2.13" x 1.28"
- Exhaust Port Volume: 71cc
- Exhaust Port Dimension: 1.40" H x 1.40" W
- Exhaust Port Location: Raised .250"
- Spark Plug Location: OEM
- Intake Valve Dimensions: 2.08" x 5.00" x 8mm
- Exhaust Valve Diameter: 1.60"
- Valve Stem Diameter: 8mm
- Valve Spring Diameter: 1.575" (40mm)
- Maximum Valve Lift: 0.710" @ 490lbs
- Spring Installed Height: 2.04" @ 146lbs
- Valve Spring Pocket I.D.: 1.64"
- 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"