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"
EGR: Yes
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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