Proflow Cylinder Heads, AirMax 205, SB Ford 302, 351C, Bare

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.

sPECIFACATIONS

Material: 356 Alloy, T6

Chamber Volume: 68cc

Intake Runner Volume: 207cc

Intake Port location raised .100" over stock

Minimum Cross Section: 2.18 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 blended)

Exhaust 1.650” (45 degree seat custom high velocity radius/blended)

Valve Guide Angles: Canted Valve angles

Intake 10.0 x 4.0 degrees

Exhaust: 9.5 x 3.0 degrees

Valve Guides: Bronze .502” od x 11/32” stems .570" shoulder

Valve Seat Inserts: Intake: 2.250” x 1.880 x 3/8 (Durabond 7000 series)

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

Rocker Arm Type 7/16” stud mounted roller rockers (1.73 ratio)