AFR SB-Chevy Street Aluminum Cylinder Heads

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AFR offers a complete selection of street cylinder heads for Small Block Chevy engines. Whatever you application, emissions legal, street/strip trophy machine, or off-road stump puller, AFR has the perfect cylinder head for you ride. Each head is 100% CNC ported for increased flow and big power gains Street Heads are shipped completely assembled and are ready to bolt on without further modifications.
All Accessory Holes are Predrilled & Tapped!

AFR 180cc SBC Street Cylinder Head
	The Airflow Research Emissions Legal (versions from 1969-94 with heat riser, CARB EO #D-250-2), 180cc intake port small block Chevy cylinder heads are available in straight plug version with a 75cc combustion chamber, a 64cc exhaust port and a 3/4” thick head deck (ideal for nitrous or blower applications.) Standard valves are 2.020 intake and 1.600 exhaust with AFR’s hardened ductile iron interlocking valve seats. The exceptional flow characteristics, ideal operating range of idle to 5500 rpm (higher rpm ranges possible depending on combination of parts), 23º valve angle, and standard valve spacing make this the perfect street head for 327 cid to 350 cid engines from 1955-86. Also available for 1987 to present engines with center bolt valve covers and 2 center intake bolts at 72º angle. No special parts are required.
AFR 195cc SBC Street Cylinder Head
	The AFR Emissions Legal, 195cc intake port small block Chevy cylinder heads are available in your the straight or plug version. These heads feature a 74cc combustion chamber with a 64cc exhaust port and a 3/4'' thick head deck (ideal for nitrous or blower applications). Standard valves are 2.020 intake and 1.600 exhaust with AFR’s hardened ductile iron interlocking valve seats. The exceptional flow characteristics, ideal operating range of 2000 rpm to 6500 rpm, 23º valve angle, and standard valve spacing make this the perfect street head for 350 cid to 400 cid engines from 1955-86. Available for 1987 to present engines with center bolt valve covers and 2 center intake bolts at 72º angle. No special parts are required.
AFR 195cc SBC Street Competition Cylinder Head
	The AFR Emissions Legal, 195cc intake port small block Chevy cylinder heads are available in your the straight or plug version. These heads feature a 74cc combustion chamber with a 64cc exhaust port and a 3/4'' thick head deck (ideal for nitrous or blower applications). Standard valves are 2.020 intake and 1.600 exhaust with AFR’s hardened ductile iron interlocking valve seats. The exceptional flow characteristics, ideal operating range of 2000 rpm to 6500 rpm, 23º valve angle, and standard valve spacing make this the perfect street head for 350 cid to 400 cid engines from 1955-86. Available for 1987 to present engines with center bolt valve covers and 2 center intake bolts at 72º angle. No special parts are required.