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AFR 180cc LT1 Eliminator SBC Aluminum Cylinder Heads

AFR 0908
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.
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Description

The Small Port, High Velocity Torque Monster!
The AFR Emissions Legal (ARB only, 49 state legal, not California), 180cc intake port LT1 Small Block Chevy cylinder heads are available in the LT1 angle plug version only. These heads feature a 55cc to 65cc combustion chamber with a 64cc exhaust port and a 3/4" thick head deck (ideal for nitrous or blower applications). Standard valves are lightweight 8mm 2.020" intake and 1.600" exhaust with AFR’s hardened ductile iron interlocking valve seats. The exceptional flow characteristics, ideal operating range of idle to 6000 rpm (higher rpm ranges possible depending on combination of parts), 23° valve angle, and standard valve spacing make this the perfect street cylinder head for 350 cid to 383 cid performance engines and is specifically designed for 1992-1995 Corvettes and 1993-1997 Camaro's. No special parts are required. Dual valve cover bolt pattern is standard.
Exhaust port is raised .100 over GM L98 cylinder heads.

Note: Angle mills might require .120" Thick intake gasket.

Important: Do not port match your intake manifold to Fel-Pro gasket as it does not precisely fit AFR heads.

 

Basic Package Components Part #
100% CNC Ported Combustion Chambers
100% CNC Ported Exhaust Ports
100% CNC Ported Intake Ports
Competition 5-angle Valve Job
 
8mm Bead Lock Intake Valve, 2.020" x 4.900" Overall Valve Length AFR #7251
8mm Bead Lock Exhaust Valve, 1.600" x 4.950" Overall Valve Length AFR #7250
PAC Racing Spring 1.290" OD Hydraulic Roller Dual Valve Spring,
140 lbs on seat, .600" maximum lift, Max RPM 6300-6800
AFR #8017
7° Titanium Retainers 1.245" O.D x .885" I.D x .655" I.D. AFR #8515
7° Bead Lock Valve Keepers AFR #9007
ARP 3/8" Rocker Studs AFR #6409
Adjustable 5/16" Guide Plates AFR #6103
Viton Valve Seals .600" O.D x .495" I.D AFR #6612
Hardened Spring Cup O.D Locator 1.380" O.D x .570" I.D AFR #8042
Ductile Iron Intake Valve Seats 2.200" O.D x 1.750" O.D x .375" Deep AFR #9060
Ductile Iron Exhaust Valve Seats 1.696" O.D x 1.325" I.D x .305" Deep AFR #9070
8 mm Bronze Valve Guides .502" O.D x 2.100" O.A.L AFR #9051

Specifications, Features, and Optional Supporting Components
Head Torque 65-70 ft. lbs
Intake Port Volume
180cc
Intake Port Dimension 2.050" H x 1.250" W 5/16 Radius
Intake Port Location Stock
Exhaust Port Volume 64cc
Exhaust Port Dimension 1.450" H x 1.550" W
Exhaust Port Location .100" Raised
Combustion Chamber Size
55cc or 65cc
Valve Cover Bolt Pattern
Center and Perimeter Bolt
Valve Angle 23°
Valve Spring Pocket Diameter 1.460" O.D
Max Valve Spring Pocket Machining 1.750" O.D
Deck Thickness .750"
Minimum Bore Diameter
4.000" 
Flat Mill .006" per cc 60cc Maximum
Angle Mill .009" per cc 55cc Maximum
Minimum Cross Sectional Area 1.810 sq. in.
Spark Plug Dimensions 14mm x .750" w/Gasket Seat
   
Intake Port Gasket GM #12524653 LT1 / Fel-Pro #1284
Exhaust Port Gasket, Fel-Pro #1404 AFR #6834
Head Gasket, 350cid Fel-Pro #1074
AFR #6803
SB Chevy Head Bolt Kit, ARP #134-3701
AFR #6310
SB Chevy Head Stud Kit, 12 Point Nuts, ARP #234-4301 AFR #6305
Head Bolt Washers, Manley
ARP #234-4301 AFR #6320
Stud Girdle GM L98
Fel-Pro #1074, AFR #6200
Suggested Manifold GM LT1 or LT4
Spark Plug Starting Range
Autolite 3924 
Important: Do not port match you intake manifold to any Fel-Pro gasket as it does not precisely match AFR heads.
Note: Milling head deck will affect flow numbers.
Angle mills might require .120" Thick intake gasket.

Details

Shipping Information

  • Item Requires Shipping
  • 65.0 lbs.
  • W12.0000” x H12.0000” x L24.0000”
  • Free Basic Shipping
  • This item ships in its own box.
  • FREE continental USA ground shipping on ALL AFR Cylinder Heads

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