AFR - Airflow Research 911J - AFR SB-Chevy Street Aluminum Cylinder Heads
AFR - Airflow Research #033-911JSB-Chevy Street Cylinder Head |
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AFR - Airflow Research 911J - AFR SB-Chevy Street Aluminum Cylinder Heads Details
SB-Chevy Street Aluminum Cylinder Heads - 180cc Intake Ports, 75cc Combustion Chambers
SB-Chevy Basic Package Components 100% CNC Ported Combustion Chambers 100% CNC Ported Exhaust Ports 100% CNC Ported Intake Ports 3-angle Valve Valve Job Intake Valve, 2.020'' standard length Exhaust Valve, 1.600'' standard length 1.450'' OD Hydraulic Valve Spring with Dampener, 120 lbs. on seat, .550'' maximum lift 10º Titanium Retainers 10º Valve Locks 3/8'' Rocker Studs (if using non-self alighing rockers) Guide Plates Valve Seals Hardened Shims Intake Valve Seats Exhaust Valve Seats Bronze Valve Guides SB-Chevy Street Head Specifications Head Torque 65-70 Ft. Lbs. Rocker Stud Torque 55-60 Ft. Lbs. Intake Port Gasket 1.230'' x 1.990'' with 3/8'' radius Exhaust Port Gasket Fel Pro 375-1404 Head Geaskt 315cc Fel Pro 375-1014 Head Bolts & Studs Standard Head Bolt Washers Standard Stud Girdle Standard Suggested Manifold Edelbrock 350-3701 Spark Plug Starting Range AC FR3LS Combustion Chambers 75cc Spring Pocket can be cut to 1.625, no deeper Valve Spacing Stock Rocker Arms Stock Valve Angle 23º Angle Mill .008'' per cc Flat Mill .006'' per cc Pushrods 5/16'' Hardened
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.
