AFR 180cc LT1 Eliminator Street Heads 909

AFR 180cc LT1 Eliminator Street heads are emissions-legal (CARB E.O. #D-250-2 for engines up to 1994), and 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 in. thick head deck (ideal for nitrous or blower applications). Standard valves are lightweight 8mm, 2.020 in. intake and 1.600 in. exhaust with AFR's hardened ductile iron interlocking valve seats. The valve springs included are intended for use on roller camshafts. Their flow characteristics, ideal operating range of idle to 6,000 rpm (higher rpm ranges are possible, depending on the combination of parts), 23 degree valve angle, and standard valve spacing make AFR 180cc LT1 Eliminator Street heads perfect for 350 to 383 c.i.d. engines. They are specifically designed for 1992-95 Corvettes and 1993-97 Camaros and Firebirds.Brand: Airflow Research (AFR)
Manufacturer's Part Number: 909
Part Type: Cylinder Heads
Product Line: AFR 180cc LT1 Eliminator Street Heads
HP Direct Part Number: AFR-0909
Combustion Chamber Volume (cc): 55
Intake Runner Volume (cc): 180cc
Exhaust Runner Volume (cc): 64cc
Cylinder Head Style: Assembled
Cylinder Head Material: Cast aluminum
Camshaft Style: Hydraulic roller
Intake Port Shape: Rectangular
Intake Valve Diameter (in.): 2.020 in.
CNC-Machined Combustion Chamber: Yes
CNC-Machined Intake Runner: Yes
CNC-Machined Exhaust Runner: Yes
Combustion Chamber Style: Heart
Intake Port Location: Standard
Exhaust Port Shape: Square
Exhaust Port Location: Raised
Spark Plug Style: Angle
Intake Valves Included: Yes
Exhaust Valves Included: Yes
Exhaust Valve Diameter (in.): 1.600 in.
Valve Springs Included: Yes
Maximum Valve Lift (in.): 0.600 in.
Outside Diameter of Outer Spring (in.): 1.290 in.
Damper Spring Included: Yes
Number of Springs Per Valve: Dual
Retainers Included: Yes
Retainer Material: Titanium
Locks Included: Yes
Lock Style: 7 degree
Valve Stem Seals Included: Yes
Rocker Arm Studs Included: Yes
Rocker Arm Nut Thread Size: 3/8 in.-24
Rocker Arms Included: No
Rocker Arm Nuts Included: No
Guideplates Included: Yes
Guideplate Pushrod Size: 5/16 in.
Valve Cover Mounting Style: Center and perimeter bolt
Accessory Bolt Holes Drilled: Yes
Intake Valve Angle: 23
Exhaust Valve Angle: 23
Valve Guides Included: Yes
Valve Guide Material: Bronze
Valve Seats Machined: Yes
Valve Seat Machine Style: 3-angle
Valve Seat Material: Ductile iron
Cylinder Head Color: Natural
Steam Holes Drilled: No
Oiling Style: Through pushrod
Machined for O-Ring: No
Heat Crossover: Yes
Remanufactured: No
Quantity: Sold as a pair.
Notes: L98 based geometry, designed for use with Generation II LT intake manifolds only. Not compatible with self-aligning rocker arms. Exhaust port is raised 0.100 in. over stock. Cylinder heads competition package street ported.