AFR 908 - Small Block Chevy 180cc LT1 Eliminator Street Aluminum Cylinder Heads-Pair

$1,899.00

AFR - Air Flow Research #908 

Small Block Chevy 180cc LT1 Eliminator Basic Package Components
100% CNC Ported Combustion Chambers
100% CNC Ported Exhaust Ports
100% CNC Ported Intake Ports
Competition 5-Angle Valve Job
Intake Valve, 2.020'' x 4.903'' o.a.l.
Exhaust Valve, 1.600'' x 4.955'' o.a.l.
1.290'' OD Hydraulic Roller Dual Valve Spring, 135 lbs. on seat, .600'' maximum lift, max RPM 6300-6500
7º Titanium Retainers
7º Valve Locks
3/8'' Rocker Studs
Adjustable 5/16'' Guide Plates
Viton Valve Seals
Hardened Spring Cups
Intake Valve Seats
Exhaust Valve Seats
Bronze Valve Guides
Small Block Chevy 180cc LT1 Eliminator Street Head Specifications
Head Torque w/Moly Lube65-70 Ft. Lbs.
Rocker Stud Torque55 Ft. Lbs.
Intake Port GasketFel-Pro 375-1284 - DO NOT PORT MATCH Intake Manifold to Fel-Pro Gasket.
Exhaust Port GasketFel Pro 375-1404
Head Gasket350ci Fel Pro 375-1074
Head Bolts & StudsStandard ARP
Head Bolt WashersManley Standard
Stud GirdleStandard GM L98
Suggested ManifoldGM LT1
Spark Plug Starting RangeAC FR3LS or 41629
Combustion Chambers55 to 65cc
Spring Pocket can be cut to 1.625, no deeper.
Valve SpacingStandard GM L98
Rocker ArmsStandard GM L98
Valve Angle23°
Angle Mill.008'' per cc
Flat Mill.006'' per cc

The AFR Emissions Legal (CARB EO #D-250-2 for engines up to 1994), 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 diameter stem, 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 350-383ci performance engines and is specifically designed for 1992-95 Corvettes and 1993-97 Camaros. No special parts are required (see footnotes here). Dual valve cover bolt pattern is standard. Exhaust port and bolt pattern are raised 3/32" over GM L98 cylinder heads, this rarely affects header or chassis fitment. Made in USA. 
Installation Note: Hydraulic roller cams typically experience valve float at 6200-6400 rpm because of their fast ramp rates. AFR suggest you upgrade your springs to AFR part number 033-8605, 1.270'' O.D. with higher spring pressures and use our Patented ''Hydra Rev Kit'' to reduce chances of valve float associated with rpm 6200 or higher.

180cc LT1 Eliminator Street Cylinder Head Features:
  • 100% CNC Ported Combustion Chambers
  • 100% CNC Ported Exhaust Ports
  • 100% CNC Ported Intake Ports
  • Competition 5-angle Valve Job
  • 180cc Intake Ports
  • 64cc Exhaust Ports
  • Bead Lock Intake Valve, 2.020'' x 4.903'' Overall Valve Length
  • Bead Lock Exhaust Valve, 1.600'' x 4.955'' Overall Valve Length
  • PAC Racing Valve Spring: 1.290'' OD Hydraulic Roller Dual Valve Spring, 135 lbs on seat, .600'' maximum lift
  • 7° Titanium Retainers
  • 7° Bead Lock Valve Keepers
  • 3/8'' Rocker Studs (if using non-self aligning rockers)
  • Adjustable 5/16'' Guide Plates
  • Viton Valve Seals
  • Hardened Spring Cup
  • Intake Valve Seats
  • Exhaust Valve Seats
  • Bronze Valve Guides
  • Standard Exhaust Bolt Pattern, Accepts Factory and Aftermarket Headers 

  • Picture for reference only.