AFR's 185cc SB Ford Enforcer Cylinder heads feature our Permanent Mold “As-Cast” Technology surfaces on the intake runners, exhaust runners and combustion chambers that allows for extremely accurate and repeatable port location/performance. This budget friendly head is perfect for your 302 to 363 Cubic Inch operating below 6000 RPM. They come fully assembled with the identical components found in our higher end CNC ported cylinder heads; such as ARP rockers studs, PAC Racing springs, Viton valve seals, AFR adjustable guide plates, machined bead valve locks (not stamped), hardened spring cups and our one piece 8mm 21 4N Stainless Steel valves. They are available bare without any parts for the DIY. Sold as a single piece, 2 are required per engine.
| Included Components | |
| As Cast Combustion Chambers | |
| As Cast Exhaust Ports | |
| As Cast Intake Ports | |
|
3-angle Valve Job |
|
| 8mm Bead Lock Intake Valve, 2.020" x 5.000" Overall Valve Length | |
| 8mm Bead Lock Exhaust Valve, 1.600" x 5.030" Overall Valve Length | |
| PAC Racing Spring 1.290" OD Hydraulic Roller Dual Valve Spring, 140 lbs on seat, .600" maximum lift, Max RPM 6300-6500 (upgrades available) | |
| 7° Steel Retainers 1.245" O.D x .885" I.D x .655" I.D | |
| 7° Bead Lock Valve Keepers | |
| ARP 3/8" Rocker Studs | |
| Adjustable 5/16" Guide Plates | |
| Viton Valve Seals .675" O.D x .513" I.D | |
| Hardened Valve Spring O.D Locator 1.380" O.D x .570" I.D | |
| 185cc Street Head Flow Chart | ||||||
| .200 | .300 | .400 | .500 | .550 | .600 | |
| Int | 119 | 177 | 225 | 255 | 257 | 260 |
| Exh | 105 | 143 | 163 | 166 | 168 | 170 |
Test conducted at 28" of water (pressure) on Superflow 1020
Bore Size: 4.060", 3/4" radius plate exhaust, 1 3/4" curved pipe
| Specifications & Features: | |
| Material |
A356 Aluminum
|
| Intake Port Volume |
185cc
|
| Intake Port Dimension |
2.010" H x 1.070" W x 5/16 Radius
|
| Intake Port Location |
Stock
|
| Exhaust Port Volume |
64cc
|
| Exhaust Port Dimension |
1.370" H x 1.350" W
|
| Exhaust Port Location |
Stock
|
| Combustion Chamber Size |
64cc
|
| Valve Angle |
20°
|
| Valve Spring Pocket Diameter |
1.540" O.D
|
| Max Valve Spring Pocket Machining |
1.600" O.D
|
| Deck Thickness |
.325"
|
| Minimum Bore Diameter |
4.000"
|
| Flat Mill |
.006" per cc 54cc Max (from 64cc);
|
| Spark Plug Dimensions |
14mm x .750" w/Gasket Seat
|
|
CARB Status: THESE PRODUCTS ARE ILLEGAL TO OPERATE ON ANY PUBLIC HIGHWAY. THIS MEANS ANY PUBLIC PAVED OR UNPAVED ROADWAY OR IN A PUBLIC PARK. THESE PRODUCTS ARE ONLY LEGAL IF USED ON A DEDICATED RACING VEHICLE. VIOLATION ARE SUBJECT TO A MAXIMUM PENALTY OF $37,500 PER VIOLATION PER VEHICLE, REVOCATION OF REGISTRATION BY DMV, LOSS OF USE ON PUBLIC RIGHT OF WAYS AND PROOF OF CORRECTION OF THE TAMPERING. |
|
| Recommended Components: | |
| Intake Port Gasket | |
| Important: Do not use your AFR gasket as a template to port match your intake manifold as one AFR gasket is used for many AFR runner volumes. | |
| Exhaust Port Gasket |
AFR #6915
|
| 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 | |
| Suggested Manifold | |
| Spark Plug Starting Range |
Autolite 3924
|
Footnotes
AFR Small Block Ford
General Recommendations for AFR Cylinder Heads:
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