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AFR 245cc NPP SBC Eliminator Racing Cylinder Heads
Cylinder Heads, 245cc NPP SBC Eliminator Racing Heads, Assembled, Aluminum, 70cc Chamber, Square Exhaust Port, Chevy, 327/350/400 Small Block, Pair
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Estimated Ship Date from Texas: Monday 10/19/2026 Would you rather pick it up?
Overview
Brand:
Manufacturer's Part Number:
1137-TI
Part Type:
Product Line:
Summit Racing Part Number:
AFR-1137-TI
Combustion Chamber Volume (cc):
70
Intake Runner Volume (cc):
245cc
Exhaust Runner Volume (cc):
80cc
Cylinder Head Style:
Assembled
Cylinder Head Material:
Cast aluminum
Camshaft Style:
Solid roller
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:
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.):
0.800 in.
Outside Diameter of Outer Spring (in.):
1.550 in.
Damper Spring Included:
Yes
Number of Springs Per Valve:
Dual
Retainers Included:
Yes
Retainer Material:
Titanium
Locks Included:
Yes
Lock Style:
10 degree
Valve Stem Seals Included:
Yes
Rocker Arm Studs Included:
No
Rocker Arms Included:
No
Rocker Arm Nuts Included:
No
Guideplates Included:
No
Valve Cover Mounting Style:
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:
5-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:
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.
AFR 245cc NPP SBC Eliminator Racing Cylinder Heads
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.
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Some parts are not legal for use in California or other states with similar laws / regulations
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