Pair of Assembled Air Flow Research Aluminum 165CC Cylinder Heads with 58CC Combustion Chambers for 289/302 Engines with EGR.For the ultimate small block Ford street car, you've got to use AFR's all new 165cc emissions legal aluminum cylinder heads. Unlike some aftermarket heads, AFR's performance cylinder heads (CARB EO #250-3) fit all your stock components; no special parts are required! With lightweight 8mm 1.900 intake valves, 1.600 exhaust valve, combustion chamber volume of 58cc, and 68cc exhaust ports, AFR's new 165cc is perfect for 289 and 302 engines operating from idle to 6000 rpm. A 3/4" thick head deck makes it ideal for nitrous or blower applications.
Cylinder Head Specifications:
Intake Port Size: 165cc
Exhaust Port Size: 68cc
Combustion Chamber Size: 58cc
Intake Valve Size: 1.900"
Exhaust Valve Size: 1.600"
Stud Mount Rockers: 3/8"
Air Pump: Yes
*Small block Ford engines refers to 289/302 engines; 289/302 engines require head bolt bushings.
*1986 5.0L must have piston notched for clearance.
*Hardened push rods required on all applications.
*These heads will not accept rail rocker arms.
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