Airflow Research
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Air Flow Research SBF 185CC

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Description
Brand:
Airflow Research (AFR)
Manufacturer's Part Number:
1420
Part Type:
Cylinder Heads
Product Line:
AFR 185cc SBF Renegade 20 Degree Street Heads
Summit Racing Part Number:
AFR-1420
Combustion Chamber Volume (cc):
72
Intake Runner Volume (cc):
185cc
Exhaust Runner Volume (cc):
68cc
Cylinder Head Style:
Assembled
Cylinder Head Material:
Cast aluminum
Intake Port Shape:
Rectangular
Intake Valve Diameter (in.):
2.020 in.
CNC-Machined Combustion Chamber:
Yes
CNC-Machined Intake Runner:
Yes
CNC-Machined Exhaust Runner:
Yes
Combustion Chamber Style:
Heart
Intake Port Location:
Standard
Exhaust Port Shape:
Square
Exhaust Port Location:
Standard
Intake Valves Included:
Yes
Exhaust Valves Included:
Yes
Exhaust Valve Diameter (in.):
1.600 in.
Valve Springs Included:
Yes
Maximum Valve Lift (in.):
0.600 in.
Camshaft Style:
Hydraulic roller
Outside Diameter of Outer Spring (in.):
1.290 in.
Damper Spring Included:
Yes
Number of Springs Per Valve:
Dual
Retainers Included:
Yes
Retainer Material:
Chromoly steel
Locks Included:
Yes
Lock Style:
7 degree
Valve Stem Seals Included:
Yes
Rocker Arm Studs Included:
Yes
Rocker Arm Nut Thread Size:
3/8 in.-24
Rocker Arms Included:
No
Rocker Arm Nuts Included:
No
Guideplates Included:
Yes
Guideplate Pushrod Size:
5/16 in.
Valve Cover Mounting Style:
Perimeter bolt
Accessory Bolt Holes Drilled:
Yes
Intake Valve Angle:
20
Exhaust Valve Angle:
20
Valve Guides Included:
Yes
Valve Guide Material:
Bronze
Valve Seats Machined:
Yes
Valve Seat Machine Style:
3-angle
Valve Seat Material:
Ductile iron
Cylinder Head Color:
Natural
Steam Holes Drilled:
No
Oiling Style:
Through pushrod
Machined for O-Ring:
No
Heat Crossover:
Yes
Remanufactured:
No
Quantity:
Sold as a pair.
Notes:
These cylinder heads will accept AIR injection and are street ported. Requires supplied thermactor reducer to mount alternator/accessory brackets. Confirm orientation of plug prior to installing cylinder head.
Emissions:
California EO Approved

AFR 185cc SBF Renegade 20 Degree Street Heads

If you need the world's finest high performance street/strip small block Ford heads, then check out AFR's 185cc emissions-legal Renegade Street cylinder heads (CARB E.O. #250-3). With lightweight 8mm, 2.020 in. intake valves and 1.600 in. exhaust valves, combustion chamber volumes of 58 or 72cc, and 68cc exhaust ports, AFR's 185cc Ford cylinder heads are designed for 302-351 c.i.d. engines operating from 1,500 to 6,500 rpm. A 3/4 in. thick head deck makes the AFR heads ideal for nitrous or blower applications. These heads will not accept rail rocker arms, and hardened push rods are required on models designed for stud mount rocker arms.

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