Proflow Cylinder Heads, SuperMax 360 CNC, Aluminium, Assembled 120cc Chamber, Straight Plug, 360cc Intake Runner, BB Chevrolet, Pair
Part No:PFEAHBB360121-CNC
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 |
