SBC

AFR Small Block Chevy 180cc “Eliminator” Street Cylinder Head

Product Description

AFR 180cc SBC “Eliminator” Street Cylinder Head

 

The Small Port, High Velocity Torque Monster

 

AFR 180cc SBC Cylinder Head

 

The Emissions Legal (versions from 1969-94 with heat riser, CARB EO #D-250-2), 180cc intake port small block Chevy “Eliminator” cylinder heads are available in your choice of straight or L98 angle plug versions. These performance heads feature a 75cc or 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 5500 rpm (higher rpm ranges possible depending on combination of parts), 23° valve angle, and standard valve spacing make this the perfect street aluminum cylinder head for 327 cid to 350 cid engines from 1955-86. Also available for 1987 to present engines with center bolt valve covers and 2 center intake bolts at 72° angle, AFR Part #0919. No special parts are required. Center bolt valve cover is available as a machine option. Exhaust port and bolt pattern are raised 3/32″ over GM L98 cylinder heads, this rarely affects header or chassis fitment.

 

Note:

Hydraulic roller cams typically experience valve float at 6200-6400 rpm because of their fast ramp rates. AFR suggests you upgrade your springs to AFR part #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 Small Block Chevy Street Aluminum Cylinder Head Flow Chart

 

Tested on 4.060 Bore

AFR 180cc SBC Cylinder Head Flow Chart

180cc 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° Manley 4140 Chrome Moly Retainers
    • 7° Bead Lock Valve Keepers
    • 3/8” Rocker Studs
    • 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
0917 180cc Eliminator Street Aluminum Cylinder Heads

  • SB-Chevy
  • 75cc Combustion Chambers
  • Angle Plug
  • Assembled
  • Sold in Pairs, 2/pkg.
0918 180cc Eliminator Street Aluminum Cylinder Heads

  • SB-Chevy
  • 65cc Combustion Chambers
  • Angle Plug
  • Assembled
  • Sold in Pairs, 2/pkg.
0919 180cc Eliminator Street Aluminum Cylinder Heads

  • SB-Chevy 1987-95 Cast Iron Head Engines with 72° Center Intake Bolt Angle
  • 65cc Combustion Chambers
  • Angle Plug
  • Assembled
  • Sold in Pairs, 2/pkg.
0911 180cc Eliminator Street Aluminum Cylinder Heads

  • SB-Chevy
  • 75cc Combustion Chambers
  • Straight Plug
  • Assembled
  • Sold in Pairs, 2/pkg.
0916 180cc Eliminator Street Aluminum Cylinder Heads

  • SB-Chevy
  • 65cc Combustion Chambers
  • Straight Plug
  • Assembled
  • Sold in Pairs, 2/pkg.