Proflow Cylinder Heads & Roller Rocker Kit, SuperMax 225, SB Ford 302, 351C

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.

Proflow's Pro Series 2024 Roller Rocker Arms are designed for use in street/strip and track applications. This series of 2024 extruded billet aluminum, CNC-machined rockers are precision-finished with friction-reducing ground needle and cage bearings for superior performance and quiet operation. They're available for a wide array of engine applications, These Pro Series rocker arms are precision-engineered to withstand rigorous racing conditions. Order the set designed to fit your engine application.

Note: Additional clearancing may be required if using hyraulic roller camshaft.

SPECIFICATIONS
Material 356 Alloy, T6
Chamber Volume 72cc
Complete Assembly options available in all chamber sizes
Intake Runner Volume 231CC
Intake Port location raised .125” 3V design
Minimum Cross Section 2.53 square inches MCSA
Exhaust Runner Volume 125cc - high velocity
Exhaust Port Location Raised .080” (near stock location)
Valve sizes Intake 2.10” (45 degree seat, custom 5 angles)
Valve sizes Exhaust 1.650” (45 degree seat )
Valve Guide Angles Canted Valve angles
Intake 10 x 4 degrees
Exhaust 9.5 x 3.0 degrees
Valve Guides Manganese Bronze .502” x 11/32” stems
Valve Seat Inserts Intake: 2.250” x 1.880 x 3/8 (Durabond 7000)
Exhaust 1.680” x 1.430” x 3/8
Spark Plugs relocated for efficient fast burn, ¾ reach, 5/8 hex, washer seat (NGKBCP7ES)
Spring Pads 1.570” od/.560” id
Valve Spring Height 1.960” (with stock length valve)
Pushrods 5/16” or 3/8” (check required length)
Rocker Arm Studs 7/16” unc
Ext Water Port Heads have 3/4 npt tapped hole on each end which need to be plugged if not used
Head Bolts oem length bolts or studs

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