Proflow Cylinder Heads, SuperMax 360 CNC, Aluminium, BB Chevrolet, Assembled

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 agressive 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

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