Proflow Cylinder Heads, AirMax-B 185, SB Ford 289, 302, 351W, Aluminium, Bare Cylinder Heads, 61cc Chamber, 185cc Intake Runner, Pair
Part Number:PFEAHF18560-BARE
Low stock - Only 1 left
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Proflow Cylinder Heads, AirMax 185, SB Ford 289,3 02, 351W 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.
Note: We suggest using Proflow Head Bolt Stepped washers part number PFEAHF-HBW. Proflow head bolt insert washers are designed to be used on Ford Windsor cylinder heads in applications where you have 7/16" head bolts being used in 1/2" bolt holes. This stops the head bolt hole distorting on aluminium heads when using 7/16'' bolts on 289 / 302 standard Windsor blocks.
| Specifications & Features: | ||
| Material | A356 Aluminum | |
| Intake Port Volume | 190cc | |
| Intake seat size | 2.02 | |
| Exhaust seat size | 1.60 | |
| Intake Port Dimension | 2.045" H x 1.205" W x 3/8 Radius | |
| Intake Port Location | Stock | |
| Exhaust Port Volume | 70cc | |
| Exhaust Port Dimension | 1.355" H x 1.360" W | |
| Exhaust Port Location | Stock | |
| Combustion Chamber Size | 58cc | |
| Valve Cover Bolt Pattern | Perimeter Bolt | |
| Valve Angle | 20° | |
| Valve Spring Pocket Diameter | 1.460" O.D | |
| Max Valve Spring Pocket Machining | 1.625" O.D | |
| Deck Thickness | .750" | |
| Minimum Bore Diameter | 4.000" | |
| Flat Mill | .006" per cc 54cc Max (from 58cc); 68cc Max (from 72cc); | |
| Angle Mill | .009" per cc 48cc Max (from 58cc); 62cc Max (from 72cc) | |
| Note:Angle mills might require a .120" Thick intake gasket. | ||
| Minimum Cross Sectional Area | 2.025 sq. in. | |
| Spark Plug Dimensions | 14mm x .750" w/Gasket Seat | |
| Head Bolt Diameter | 1/2" | |
| Stud Mount - Non-Emissions Legal | ||
| Combustion Chamber | ||
| 8mm Bead Lock Intake Valve 2.020" x 4.900" O.A.L. | 11/32 guide is an option | |
| 8mm Bead Lock Exhaust Valve 1.600" x 4.950" O.A.L. | ||
| Pedastal 8mm Bead Lock Intake Valve 2.020" x 5.080" O.A.L | ||
| Pedastal 8mm Bead Lock Exhaust Valve 1.600" x 5.100" O.A.L | ||
| Racing Spring 1.290" OD Hydraulic Roller Dual Valve Spring, 140 lbs on seat, .600" maximum lift, Max RPM 6300-6500 (upgrades available) | ||
| 7° Manley Steel Retainers 1.245" O.D x .885" I.D x .655" I.D | ||
| 7° Bead Lock Valve Keepers | ||
| 3/8" Rocker Studs | ||
| 5/16" Guide Plates | ||
| Viton Valve Seals .600" O.D x .495" I.D | ||
| Hardened Valve Spring O.D Locator 1.380" O.D x .570" I.D | ||
| Powder Metallurgy Intake Valve Seats 2.131" O.D x 1.680" I.D x .375" Deep | ||
| Powder Metallurgy Exhaust Valve Seats 1.650" O.D x 1.350" I.D x .375" Deep | ||
| 8 mm Bronze Valve Guides .502" O.D x 2.100" O.A.L | ||
| Thermactor Air Injector Reducer Bushing (5/8"-11 x 7/16"-14) | ||
| Recommended Components: | ||
| Intake Port Gasket, Fel-Pro #1262 | ||
| Important: Do not port match your intake manifold to Fel-Pro gasket as it does not precisely fit the heads. | ||
| Exhaust Port Gasket, Fel-Pro #1415 | ||
| Head Gasket, 302/351W, Fel-Pro #1011-1 | ||
| SB Ford 1/2" Bolt Head Bolts, ARP #154-3603 | ||
| SB Ford 1/2" Bolt Head Studs, ARP #254-4503 | ||
| 1/2" Bolt - 7/16" Thread Head Bolts, 289/302W: ARP 254-3708 | ||
| Head Bolt Washers, Manley | ||
