AFR - Airflow Research 908 - AFR SB-Chevy LT1 Aluminum Cylinder Heads
AFR - Airflow Research #033-908SB-Chevy Street Cylinder Heads |
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AFR - Airflow Research 908 - AFR SB-Chevy LT1 Aluminum Cylinder Heads Details
LT1 Street Aluminum Cylinder Heads
180cc Intake Ports, 55cc Combustion Chambers
SB-Chevy Basic Package Components 100% CNC-Ported Combustion Chambers 100% CNC-Ported Exhaust Ports 70% to 100% CNC-Ported Intake Ports 3-angle Valve Valve Job Intake Valve, 2.020'' standard length Exhaust Valve, 1.600'' standard length 1.450" O.D. Hydraulic Dual 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 LT1 Street Head Specifications Head Torque 65-70 ft/lbs Rocker Stud Torque 55-60 ft/lbs Intake Port Gasket 1.250'' x 2.040'' with 3/8'' radius Exhaust Port Gasket Fel Pro 375-1404 Head Geaskt 315cc Fel Pro 375-1404 Head Bolts & Studs Standard Head Bolt Washers Standard Stud Girdle Standard Suggested Manifold GM LT1 Spark Plug Starting Range AC FR3LS Combustion Chambers 55cc 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
All Accessory Holes are Predrilled & Tapped!AFR 180cc LT1 SBC Street Cylinder Head
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The Airflow Research Emissions Legal (CARB EO #D-250-2 for engines up to 1994), 180cc intake port LT1 small block Chevy cylinder heads are available in the LT1 angle plug version only. These heads feature a 55cc 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 idle to 6000 rpm (higher rpm ranges possible depending on combination of parts), 23º valve angle, and standard valve spacing make this the perfect street head for 350 cid to 383 cid engines and is specifically designed for 1992-95 Corvettes and 1993-97 Camaros. No special parts are required.
