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. Component upgrade and machining options are available to customize AFR Heads to your specific build here.


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 #7253 8mm Bead Lock Intake Valve, 2.125" x 5.000" Overall Valve Length
AFR #7254 8mm Bead Lock Exhaust Valve, 1.600" x 5.030" Overall Valve Length
AFR #8001 PAC Racing Springs 1.550" OD Solid Roller Dual Valve Spring Pac #1225, 250 lbs on seat, .800" maximum lift, Max RPM 8000-8200
AFR #8511 Manley 10° Steel Retainers 1.500" O.D x 1.120" I.D x .705" I.D
AFR #9009 10° Bead Lock Valve Keepers with lashcap recess
AFR #6612 Viton Valve Seals .600" O.D x .495" I.D
AFR #8048 Hardened Valve Spring I.D Locator 1.550" O.D x .780" I.D
AFR #9060 Ductile Iron Intake Valve Seats 2.200" O.D x 1.750" I.D x.375" Deep
AFR #9070 Ductile Iron Exhaust Valve Seats 1.696" O.D x 1.325" I.D x .305" Deep
AFR #9051 8mm Bronze Valve Guides .502" O.D x 2.100" O.A.L



Specifications & Features:
A356 Aluminum Material
245cc Intake Port Volume
2.200" H x 1.300" W 7/16 Radius Intake Port Dimension
Stock Intake Port Location
80cc Exhaust Port Volume
1.465" H x 1.570" W Exhaust Port Dimension
.250" Raised Exhaust Port Location
70cc or 80cc Combustion Chamber Size
Perimeter Bolt Valve Cover Bolt Pattern
23° Valve Angle
1.580" O.D Valve Spring Pocket Diameter
1.680" O.D Max Valve Spring Pocket Machining
Warning: Do not machine spring pad any deeper.
.750" Deck Thickness
4.000" Minimum Bore Diameter
.006" per cc 65cc Maximum Flat Mill
.009" per cc 60cc Maximum Angle Mill
2.730 sq. in. Minimum Cross Sectional Area
14mm x .750" w/Gasket Seat Spark Plug Dimensions
Non Emissions Compliant Carb 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 #6820 Intake 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 #6835 Exhaust Port Gasket, Fel-Pro #1405
AFR #6801 Head Gasket, 350cid Fel-Pro #1004
AFR #6802 Head Gasket, 400cid Fel-Pro #1014
AFR #6310 SB Chevy Head Bolt Kit, ARP #134-3701
AFR #6305 SB Chevy Head Stud Kit, 12 Point Nuts, ARP #234-4301
AFR #6320 Head Bolt Washers, Manley
AFR Titan TXR #4801 Suggested Manifold
AFR Titan TXS #4802 Suggested Manifold
Autolite 3922 Spark Plug Starting Range
 Model      Product Name   Price   Buy Now 
 1137   AFR SBC 245cc Competition Package, Standard Exhaust, 70cc chambers, complete w/ parts   AFR SBC 245cc Competition Package, Standard Exhaust, 70cc chambers, complete w/ parts   $2,524.00  Buy Now 
 1138   AFR SBC 245cc Competition Package, standard exhaust, 80cc chambers, complete w/ parts   AFR SBC 245cc Competition Package, standard exhaust, 80cc chambers, complete w/ parts   $2,524.00  Buy Now 
Displaying 1 to 2 (of 2 products) Result Pages:  1 
Air Flow Research | 28611 W. Industry Drive | Valencia, CA 91355 | 661-257-8124

Follow AFR_Heads on Twitter  Car people connect at hubgarage.com    Follow AFR_Heads on Youtube

Copyright © 2015 Air Flow Research
Powered by osCommerce