Proflow Cylinder Heads, AirMax 185 CNC, SB Ford 289, 302, Aluminum, Assembled 7/16 Studs, Adj G/Plates, 58cc Chamber, 185cc Intake Runner, Pair
Part No:PFEAHF18560-CNC
Proflow Cylinder Heads, AirMax 185 CNC, SB Ford 289, 302, 351W, 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, 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 | ||
| 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 | ||
