227cc SBC LT "Eliminator" 23° Racing Head

Timeless Design - The first in Our Line with 60/40 Valve Spacing

AFR's LT1/LT4 heads are designed for the Gen II reverse cooled SBC engine from 1992-1996. They feature all the same benefits and quality components as AFR's Gen I SBC Heads in addition to dual pattern valve cover mounting holes and Titanium Retainers as standard equipment. Not compatible with self-aligning rocker arms. Component upgrade and machining options are available to customize AFR Heads to your specific build here.

227cc SBC Aluminum Cylinder Head Race Ready Flow Chart

Tested on 4.125 Bore

227cc SBC Race Ready Cylinder Head Flow Chart

227cc SBC Aluminum Cylinder Head Comp. Flow Chart

Tested on 4.125 Bore

227cc SBC Competition 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 #7256 8mm Bead Lock Intake Valve 2.100" x 5.000" O.A.L.
AFR #7254 8mm Bead Lock Exhaust Valve 1.600" x 5.030" O.A.L.
AFR #8000 PAC Racing Spring 1.550" OD Solid Roller Dual Valve Spring, 220 lbs on seat, .710" maximum lift, Max RPM 7200-7400
AFR #8511 10° Manley Steel Retainers 1.500" O.D x 1.120" I.D x .705" I.D
AFR #9009 10° Bead Lock Valve Keepers
AFR #6405 ARP 7/16" Rocker Studs
AFR #6103 Adjustable 5/16" Guide Plates
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 8 mm Bronze Valve Guides .502" O.D x 2.100" O.A.L



Specifications & Features:
A356 Aluminum Material
227cc Intake Port Volume
2.200" H x 1.290" W 5/16 Radius Intake Port Dimension
Stock Intake Port Location
80cc Exhaust Port Volume
1.430" H x 1.540" W Exhaust Port Dimension
.250" Raised Exhaust Port Location
55 or 65cc 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 60cc Maximum Flat Mill
.009" per cc 55cc Maximum Angle Mill
2.340 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:
AFR #6860 Intake Gasket
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 #6803 Head Gasket, 350cid Fel-Pro #1074
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 #6200 Stud Girdle GM L98
GM LT4 or Edelbrock LT4 Suggested Manifold
Autolite 3922 Spark Plug Starting Range

 Model      Product Name   Price   Buy Now 
 1076   AFR SBC 227cc LT4 Race Ready Reverse Cool Heads, (Specify chamber size 55cc - 65cc), complete w/parts   AFR SBC 227cc LT4 Race Ready Reverse Cool Heads, (Specify chamber size 55cc - 65cc), complete w/parts   $2,160.00  Buy Now 
 1126   SBC 227cc Competition Package LT4 Reverse Cool Heads, (Specify chamber size 55cc - 65cc), complete w/parts   SBC 227cc Competition Package LT4 Reverse Cool Heads, (Specify chamber size 55cc - 65cc), complete w/parts   $2,674.00  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