AFR 180cc LT1 SBC Eliminator Street Cylinder Head
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Prompt and Speedy Delivery Available *Unless Special Order Item
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100% ORIGINAL AND QUALITY
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Backed by Manufacturer Warranty
The Small Port, High Velocity Torque Monster
The AFR 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 to 65cc combustion chamber with a 64cc exhaust port and a 3/4" thick head deck (ideal for nitrous or blower applications). Standard valves are lightweight 8mm 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), 23° valve angle, and standard valve spacing make this the perfect street cylinder head for 350 cid to 383 cid performance engines and is specifically designed for 1992-95 Corvettes and 1993-97 Camaros. No special parts are required .Dual valve cover bolt pattern is standard. Exhaust port is raised .100 over GM L98 cylinder heads.
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Note:
Hydraulic roller cams typically experience valve float at 6200-6400 rpm because of their fast ramp rates. AFR suggest you upgrade your springs to AFR part #8605, 1.290 O.D. with higher spring pressures and use our Patented “Hydra Rev Kit†to reduce chances of valve float associated with rpm 6200 or higher.
180cc SBC LT Street Aluminum Cylinder Head Flow Chart
Tested on 4.060 Bore
100% CNC Ported Combustion Chambers
The Small Port, High Velocity Torque Monster
The AFR 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 to 65cc combustion chamber with a 64cc exhaust port and a 3/4" thick head deck (ideal for nitrous or blower applications). Standard valves are lightweight 8mm 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), 23° valve angle, and standard valve spacing make this the perfect street cylinder head for 350 cid to 383 cid performance engines and is specifically designed for 1992-95 Corvettes and 1993-97 Camaros. No special parts are required .Dual valve cover bolt pattern is standard. Exhaust port is raised .100 over GM L98 cylinder heads.
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//
Â
Note:
Hydraulic roller cams typically experience valve float at 6200-6400 rpm because of their fast ramp rates. AFR suggest you upgrade your springs to AFR part #8605, 1.290 O.D. with higher spring pressures and use our Patented “Hydra Rev Kit†to reduce chances of valve float associated with rpm 6200 or higher.
180cc SBC LT Street Aluminum Cylinder Head Flow Chart
Tested on 4.060 Bore
100% CNC Ported Combustion Chambers
100% CNC Ported Exhaust Ports 100% CNC Ported Intake Ports 3-angle Radiused Valve Job Specifications, Features, and Optional Supporting Components 65-70 ft. lbs Head Torque 55-60 ft. lbs Rocker Stud Torque GM #12524653 LT1/Fel-Pro #1284 Intake Port Gasket Important: Do not port match your intake manifold to Fel-Pro/GM LT1 gasket as it does not precisely fit AFR heads. GM LT1 Suggested Manifold AC FR3LS or 41629 Spark Plug Starting Range 55cc or 65cc Combustion Chambers Can be cut to 1.625, no deeper Spring Pocket Standard GM L98 Valve Spacing Standard, GM L98 Rocker Arms 23° Valve Angle .008" per cc Angle Mill (Milling options available) .006" per cc Flat Mill (Milling options available Note: Milling head deck will affect flow numbers
