Other products by AFR
Item #: 1137-TI
Reg. Price: USD $2,725.00
Our Price: USD $2,717.00


245cc SBC "Eliminator" 23° NPP™ Racing Head

Performance Like a Raised Runner Head

AFR's 245cc "Competition" heads feature 100% CNC ported intake, exhaust & chambers, A356 aluminum castings and high quality components throughout. NPP stands for "no pushrod pinch", and this is AFR's largest 60/40 valve spacing head. These heads require shaft mount rocker arms for all applications and have extra machining for 3/8" pushrod clearance.

245cc SBC Aluminum Cylinder Head Flow Chart

245cc SBC Cylinder Head Flow Chart

Included Components
100% CNC Ported Combustion Chambers
100% CNC Ported Exhaust Ports
100% CNC Ported Intake Ports
Competition 5-angle Valve Job
AFR #72538mm Bead Lock Intake Valve, 2.125" x 5.000" Overall Valve Length
AFR #72548mm Bead Lock Exhaust Valve, 1.600" x 5.030" Overall Valve Length
AFR #8001PAC Racing Springs 1.550" OD Solid Roller Dual Valve Spring Pac #1225, 250 lbs on seat, .800" maximum lift, Max RPM 8000-8200
AFR #850510° Titanium Retainers 1.500" O.D x 1.120" I.D x .705" I.D
AFR #900910° Bead Lock Valve Keepers with lashcap recess
AFR #6612Viton Valve Seals .600" O.D x .495" I.D
AFR #8048Hardened Valve Spring I.D Locator 1.550" O.D x .780" I.D
AFR #9060Ductile Iron Intake Valve Seats 2.200" O.D x 1.750" I.D x.375" Deep
AFR #9070Ductile Iron Exhaust Valve Seats 1.696" O.D x 1.325" I.D x .305" Deep
AFR #90518mm Bronze Valve Guides .502" O.D x 2.100" O.A.L


Specifications & Features:
A356 AluminumMaterial
245ccIntake Port Volume
2.200" H x 1.300" W 7/16 RadiusIntake Port Dimension
StockIntake Port Location
80ccExhaust Port Volume
1.465" H x 1.570" WExhaust Port Dimension
.250" RaisedExhaust Port Location
70cc or 80ccCombustion Chamber Size
Perimeter BoltValve Cover Bolt Pattern
23°Valve Angle
1.580" O.DValve Spring Pocket Diameter
1.680" O.DMax Valve Spring Pocket Machining
Warning: Do not machine spring pad any deeper.
.750"Deck Thickness
4.000"Minimum Bore Diameter
.006" per cc 65cc MaximumFlat Mill
.009" per cc 60cc MaximumAngle Mill
2.730 sq. in. Minimum Cross Sectional Area
14mm x .750" w/Gasket SeatSpark Plug Dimensions
Non Emissions CompliantCarb EO#
Note: Angle mills might require .120" Thick intake gasket.

Recommended Components:
T&D .450" offset (requires .180 offset lifters)Shaft Mount Rocker Arms,
T&D .550" offset (with standard lifters)Shaft Mount Rocker Arms
AFR #6820Intake Gasket 1.310 x 2.180 w/ 3/8" radius, Fel-Pro #1206
Important: Do not port match your intake manifold to Fel-Pro gasket as it does not precisely fit AFR heads.
AFR #6835Exhaust Port Gasket, Fel-Pro #1405
AFR #6801Head Gasket, 350cid Fel-Pro #1004
AFR #6802Head Gasket, 400cid Fel-Pro #1014
AFR #6310SB Chevy Head Bolt Kit, ARP #134-3701
AFR #6305SB Chevy Head Stud Kit, 12 Point Nuts, ARP #234-4301
AFR #6320Head Bolt Washers, Manley
AFR Titan TXR #4801Suggested Manifold
AFR Titan TXS #4802Suggested Manifold
Autolite 3922Spark Plug Starting Range



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