AFR's 185cc SBF Enforcer Cylinder head features their Permanent Mold “As-Cast” Technology surfaces on the intake runners, exhaust runners and combustion chambers that allow 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.
Sold as a single piece, 2 pieces required per engine.
Note:
Hydraulic roller cams typically experience valve float at 6000-6200 rpm because of their fast ramp rates. AFR suggests you upgrade your springs to AFR part #8019, 1.270 O.D. with higher spring pressures to reduce chances of valve float associated with rpm’s 6200 or higher, but smaller cams with less than .500 lift can rev to 6500 rpm with the included springs.
Note: Stock 86-93 5.0L must have pistons notched for clearance.
| 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 600
Bore Size: 4.060", 3/4" radius plate exhaust, 1 3/4" curved pipe
| Basic Package Components | Part # |
| As Cast Combustion Chambers As Cast Exhaust Ports As Cast Intake Ports 3-angle Valve Job |
| Specifications, Features, and Optional Supporting Components |
| Head 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" |
| Spark Plug Dimensions |
14mm x .750" w/Gasket Seat |
| Intake Port Gasket |
AFR #6911 |
| Important: Do not port match your intake manifold to Fel-Pro gasket as it does not precisely fit an AFR head. | |
| Exhaust Port Gasket |
AFR #6915 |
| Head Gasket, 302/351W, Fel-Pro #1011-1 |
AFR #6808 |
| SB Ford 1/2" Bolt Head Bolts, ARP #154-3603 |
AFR #6318 |
| SB Ford 1/2" Bolt Head Studs, ARP #254-4503 |
AFR #6317 |
| 1/2" Bolt - 7/16" Thread Head Bolts, 289/302W: ARP 254-3708 |
AFR #6319 |
| Head Bolt Washers, Manley |
AFR #6320 |
| Suggested Manifold |
AFR #4830 |
| Flat Mill | .006" per cc 54cc Max (from 64cc) |
| Spark Plug Starting Range | Autolite 3924 |
