Proflow Cylinder Heads, SuperMax 360, Aluminium, BB Chevrolet, 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. 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 aggressive 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.

• Material: A356.2 Aluminum
• Intake Port Volume: 360cc
• Intake seat size: 2.3
• Exhaust seat size: 1.88
• Intake Port Dimension: 2.515"H x 1.780"W x 11/32 Radius
• Intake Port Location: Stock
• Exhaust Port Volume: 135cc
• Exhaust Port Dimension: 1.780"H x 2.025" W
• Exhaust Port Location: .375" Raised
• Combustion Chamber Size: 121cc
• Valve Cover Bolt Pattern: Perimeter Bolt
• Valve Angle: 24°/4° Int, 15°/4° Exh
• Valve Spring Pocket Diameter: 1.725" O.D
• Max Valve Spring Pocket Machining: 1.750" O.D
• Deck Thickness: .750"
• Minimum Bore Diameter: 4.250"
• Flat Mill: .006" per cc/ Maximum 114cc
• Angle Mill: .009" per cc/Maximum 104cc
• Note: Angle mills might require a .120" Thick intake gasket.
• Minimum Cross Sectional Area: 3.435 sq. in.
• Spark Plug Dimensions: 14mm x .750" w/Gasket Seat
• Intake Valve Seat Machine Style: 5-angle
• 11/32" Intake Valve, 2.300" x5.500" O.A.L
• 11/32" Tulip Exhaust Valve, 1.880" x 5.450" O.A.L
• Racing Spring #1224 1.625 O.D. Solid Roller, 275lbs on seat, .850 Maximum Lift, Max RPM 7400-7600
• 10° Titanium Retainers 1.490" O.D x 1.180" I.D x .765" I.D
• 10° 11/32" Valve Locks with lashcap recess
• ARP 7/16" Rocker Exhaust Studs
• ARP 7/16" Rocker Intake Studs
• 3/8" Guide Plates
• 11/32" Viton Valve Seals
• Hardened Spring Cup 1.740" O.D / 1.650" I.D
• Intake Valve Seats 2.450" O.D x 2.000" I.D x .375" Deep
• Exhaust Valve Seats 2.000" O.D x 1.580" I.D x .375" Deep
• 11/32" Intake Bronze Valve Guides .502" O.D x 2.10" O.A.L
• 11/32" Exhaust Bronze Valve Guides .502" O.D x 2.25" O.A.L

Recommended Components:

• Intake Port Gasket (.120" Thick)
• Intake Port Gasket (.060" Thick)
• Important: Do not port match your intake manifold to Fel-Pro gasket as it does not precisely fit the heads.
• Exhaust Port Gasket
• Head Gasket, Fel-Pro #1047 (Mark V and VI)
• Head Gasket, Fel-Pro #1017-1 (Mark IV)
• Head Bolts, ARP 135-3703 (Mark IV)
• Head Bolts, ARP 135-3707 (Mark V)
• Head Studs, ARP 235-4713
• Head Bolt Washers, Manley
• Stud Girdle
• 7/16 Stud Mount Rocker Arms - 1.7 Ratio (For Optimized Geometry)
• 1.7 Shaft Mount Rocker Arms T&D
• Suggested Manifold: Victor Jr
• Suggested Manifold: Super Victor
• Spark Plug Starting Range: Pump Gas 3924 / Race Gas 3922