Brand: Airflow Research (AFR)
Manufacturer's Part Number: 1217NP
Part Type: Cylinder Heads
Product Line: AFR 245cc NPP SBC Eliminator Racing Cylinder Heads
Automotive Fittings Part Number: AFR-1217NP
Combustion Chamber Volume (cc): 70
Intake Runner Volume (cc): 245cc
Exhaust Runner Volume (cc): 80cc
Cylinder Head Style: Bare
Cylinder Head Material: Cast aluminum
Intake Port Shape: Rectangular
Intake Valve Diameter (in.): 2.125 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: Round
Exhaust Port Location: Raised
Spark Plug Style: Angle
Intake Valves Included: No
Exhaust Valves Included: No
Exhaust Valve Diameter (in.): 1.600 in.
Valve Springs Included: No
Damper Spring Included: No
Retainers Included: No
Locks Included: No
Valve Stem Seals Included: No
Rocker Arm Studs Included: No
Rocker Arms Included: No
Rocker Arm Nuts Included: No
Guideplates Included: No
Accessory Bolt Holes Drilled: Yes
Intake Valve Angle: 23
Exhaust Valve Angle: 23
Valve Guides Included: Yes
Valve Guide Material: Manganese bronze
Valve Seats Machined: Yes
Valve Seat Machine Style: 5-angle intake/3-angle exhaust
Valve Seat Material: Ductile iron
Cylinder Head Color: Natural
Steam Holes Drilled: No
Oiling Style: Through pushrod
Machined for O-Ring: No
Heat Crossover: No
Remanufactured: No
Quantity: Sold as a pair.
Notes: Designed for large displacement small blocks. Requires shaft mount rocker system with 0.450 in. offset and 0.180 in. offset lifters or 0.550 in offset rocker arms with standard lifters.
Description:
AFR 245cc NPP SBC Eliminator racing cylinder heads are their largest and most powerful 60/40 head for the small block Chevy. These competition-ported heads feature 100 percent CNC-machined intake runners, exhaust ports, and combustion chambers. With A356 aluminum castings and high-quality components throughout, these NPP—no pushrod pinch—units have extra machining for 3/8 in. pushrod clearance. AFR 245cc NPP SBC Eliminator heads are offered with stock or spread port exhaust, and steel or titanium retainers, as well as bare.