AFR 180cc SBC Eliminator Street Cylinder Head
The Small Port, High Velocity Torque Monster
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Note:Hydraulic roller cams typically experience valve float at 6000-6200 rpm because of their fast ramp rates. AFR suggest you upgrade your springs to AFR part #8047, 1.290 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. |
The
AFR Emissions Legal (versions from 1969-94 with heat riser, CARB
EO #D-250-2), 180cc intake port small block Chevy cylinder heads
are available in your choice of straight or L98 angle plug versions.
These 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), 23º 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 72º angle, AFR Part #0919 and #1041.
No special parts are required (180cc SBC Street Aluminum Cylinder Head Flow Chart |
|
180cc SBC Competition Package Cylinder Head Flow Chart |
180cc SBC Street Cylinder Head Part Numbers
CNC Ported Pairs of Heads Complete With Parts or
Ready to Install
CNC Street Ported Heads |
|
Description |
Part Number |
| 180cc Street Heads, Vortec Plug w/heat riser, 65cc | 0912 |
| 180cc Street Heads, Straight Plug w/heat riser, 75cc | 0911 |
| 180cc Street Heads, Straight Plug w/heat riser, 65cc | 0916 |
| 180cc Street Heads, L98 Angle Plug w/heat riser, 75cc | 0917 |
| 180cc Street Heads, L98 Angle Plug w/heat riser, 65cc | 0918 |
| 180cc Street Heads, L98 Angle Plug w/heat riser, 65cc | 0919 |
Stage 1- Bare Heads No Porting or Parts |
|
Description |
Part Number |
| 180cc Street Heads, L98 Angle Plug w/heat riser, 75cc | 0988 |
| 180cc Street Heads, Vortec Plug w/heat riser, 65cc | 0989 |
| 180cc Street Heads, Straight Plug w/heat riser, 75cc | 0990 |
| 180cc Street Heads, Straight Plug w/heat riser, 65cc | 0991 |
| 180cc Street Heads, L98 w/heat riser, 65cc | 0992 |
Stage 1 Bare Heads (no parts or porting) are available.
| Basic Package Components | Part # |
| 100% CNC Ported Combustion Chambers 100% CNC Ported Exhaust Ports 100% CNC Ported Intake Ports 3-angle Valve Job |
|
| Intake Valve, 2.020" standard length | AFR #7251 |
| Exhaust Valve, 1.600" standard length | AFR #7250 |
| 1.290" OD Hydraulic dual valve spring | AFR #8017 |
| 135lbs on seat, .600" maximum lift (upgrades available) | Comp Pkg #8019 |
| 7° 4140 Chrome Moly Retainers | AFR #8514 |
| 7° Valve Locks | AFR#9007 |
| 3/8" Rocker Studs | AFR #6410 |
| Guide Plates | AFR#6110 |
| Valve Seals | AFR #6612 |
| Spring Cup | AFR #8042 |
| Intake Valve Seats | AFR #9060 |
| Exhaust Valve Seats | AFR#9070 |
| Bronze Valve Guides | AFR#9051 |
| Specifications, Features, and Optional Supporting Components |
| Head Torque | 65-70 ft. lbs |
| Rocker Stud Torque | 55-60 ft. lbs |
| Intake Port Gasket, 1.230" X 1.990" w/ 3/8" radius | AFR #6817 or Fel-Pro #1256 |
| Exhaust Port Gasket | Fel-Pro #1404, AFR #6834 |
| Head Gasket | 350cid Fel-Pro #1003, AFR #6800 |
| 400cid Fel-Pro #1014, AFR #6802 | |
| Head Bolts & Studs | Standard ARP, AFR #6310 & #6305 |
| Head Bolt Washers | Manley, AFR #6320 |
| Stud Girdle GM L98 | AFR #6200 |
| Suggested Manifold | Edelbrock #3701, AFR #5029 |
| Spark Plug Starting Range | AC FR3LS or 41629 |
| Combustion Chambers | 65cc or 75cc |
| Spring Pocket can be cut to 1.625, no deeper | |
| Valve Spacing | Standard GM L98 |
| Rocker Arms | Standard GM L98 |
| Valve Angle | 23° |
| Angle Mill (milling options available) | .008" per cc |
| Flat Mill (milling options available) | .006" per cc |
| Pushrods | 5/16" Hardened AFR #6600 & #6601 |
Note: Milling head deck will affect flow numbers. Angle mills might require a .120 thick intake gasket
Important: Do not port match you intake manifold to Fel-Pro gasket as it does not precisely fit AFR heads.