Proflow Cylinder Heads, AirMax 170, SB Ford 289, 302, 351W

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.

Note: We suggest using Proflow Head Bolt Stepped washers part number PFEAHF-HBW Proflow head bolt insert washers are designed to be used on Ford Windsor cylinder heads in applications where you have 7/16" head bolts being used in 1/2" bolt hole Stops head bolt hole distorting on aluminium heads when using 7/16 bolts on 289 / 302 standard Windsor block

Specifications & Features:
Material A356 Aluminum
Intake Port Volume 175cc(177.4)
Intake seat size 2.02
Exhaust seat size 1.60
Intake Port Location Stock
Exhaust Port Volume 66cc(66.4)
Exhaust Port Location Stock
Combustion Chamber Size 60cc
Valve Cover Bolt Pattern Perimeter Bolt
Valve Angle 20
Valve Spring Pocket Diameter 1.460" O.D(1.55" is available)
Deck Thickness 0.75
Spark Plug Dimensions 14mm x .750"
Head Bolt Diameter 1/2"
Valve Guide material Manganese Bronze
Valve Guide I.D 11/32 or 8mm
Valve Seat Material Powdered Metal
Accessory Bolt Holes Drilled Yes
Cylinder Head Finish As Casting
Engine Make/Size Ford 5.8L/351W
Guideplates Included Yes 5/16 Adjustable
Heat Crossover No
Lock Style 7 degree
Machined for O-Ring No
Maximum Valve Lift 0.575 in (14.605 mm)
Oiling Style Through pushrod
Outside Diameter of Outer Spring 1.46 in (37.1 mm)
Package Depth 20
Package Height 7.38
Package Width 13.8
Rocker Arm Nuts Included No
Rocker Arms Included No
Shipping Weight 50 pound
Valve Cover Mounting Style Perimeter bolt
Valve Guides Included Yes
Valve Seat Machine Style 5 ANGLE
Valve Seats Machined Yes
Spark Plugs: Champion RC12YC or equivalent
Head Bolts: 7/16" ARP 154-3605 1/2" ARP 154-3603
Head Studs: 1/2" ARP 154-4003
Head Gaskets: Fel-Pro 1011-1
Intake Gaskets: Fel-Pro 1250
Exhaust Gaskets: Fel-Pro 1415

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Proflow Cylinder Heads SuperMax 225, Assembled, Aluminium, SB Ford 302-351 Cleveland, 3V, 73cc Chamber, 225cc Intake Runner, 630HP Out of Box, Pair

Proflow Cylinder Heads SuperMax 225, Assembled, Aluminium, SB Ford 302-351 Cleveland, 3V, 73cc Chamber, 225cc Intake Runner, 630HP Out of Box, Pair

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