AFR's cutting edge 175cc Small Block Mopar cylinder heads are a remarkable addition to our performance line-up. Designed for 318-340-360 engines, this innovative cylinder head features an As Cast surface on the intake and exhaust runners and combusion chamber for optimal performance. Enhanced water jet design ensures superior cooling in crucial areas.
This cylinder head offers exceptional value, available as a "No Parts" head or fully assembled wtih the premium components found in all our top tier cylinder heads. They are a perfect choice for anyone looking to upgrade from factory iron pieces. Sold as a single piece, 2 required per engine.
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175cc As Cast Flow Chart
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| .200 | .300 | .400 | .500 | .550 | .600 | .650 | |
| Int | 136 | 190 | 234 | 252 | 257 | 259 | 262 |
| Exh | 117 | 156 | 182 | 186 | 190 | 201 | 203 |
| Included Components | |
| As Cast Combustion Chambers | |
| As Cast Exhaust Ports | |
| As Cast Intake Ports | |
| Multi-Angle Valve Job | |
| SB Mopar 8mm Stainless Steel 2.020 x 5.00 O.A.L. Race Intake Valve | |
| SB Mopar 8mm Stainless Steel 1.600 X 5.030 O.A.L. Race Exhaust Valve | |
| Melling Racing Spring 1.290" OD Hydraulic Roller Dual Valve Spring, 140 lbs on seat, .600" maximum lift, Max RPM 6300-6500 (upgrades available) | |
| 7° Chrome Moly Retainers 1.245" O.D x .885" I.D x .655" I.D | |
| 7° Bead Lock Valve Keepers | |
| 8mm Viton Valve Seals .675" O.D x .530" I.D | |
| Hardened Valve Spring O.D Locator 1.380" O.D x .570" I.D | |
| Specifications & Features: | |
| Material |
Aluminum
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| Intake Port Volume |
175cc
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| Intake Port Dimension |
2.250" x 1.150"
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| Intake Port Location |
Stock
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| Exhaust Port Volume |
80cc
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| Exhaust Port Dimension |
1.750" H x 1.250" W
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| Exhaust Port Location |
Stock
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| Combustion Chamber Size |
62cc
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| Valve Cover Bolt Pattern |
Perimeter Bolt
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| Valve Angle |
18°
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| Valve Spring Pocket Diameter |
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| Max Valve Spring Pocket Machining |
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| Warning: Do not machine spring pad any deeper. | |
| Deck Thickness |
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| Minimum Bore Diameter |
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| Minimum Head Gasket Bore | |
| Flat Mill |
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| Spark Plug Dimensions |
14mm x .750" w/gasket seat
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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. |
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| Recommended Components: | |
| Intake Port Gasket |
Felpro 1213
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| 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 |
Felpro 1413
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| Head Gasket, 318-360cid |
Felpro 521 SD or Felpro 1008
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| Head Gasket |
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| Head Bolt Kit |
ARP 144-3601
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| Manley Washers for OEM Bolts |
6320
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| Suggested Manifold |
Edelbrock 2176 Dual Plane
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| Suggested Manifold | |
| Spark Plug Starting Range |
AFR #6218 (Autolite 3924)
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