If you need the world's finest street/strip small block Ford head, check out AFR's all new 185cc
intake port cylinder heads. With 2.020 intake valves, 1.600" exhaust valves, and combustion
chamber volumes of 58cc or 64cc, AFR's new 185cc Ford head is designed for 351 cid engines
operating from 1500 rpm to 6500 rpm. Will not accept rail rocker arms. Hardened pushrods required
with heads #1420 and #1422. High flow 2.020 valves require aftermarket pistons notched for valve
clearance. Certification by the California Air Resources Board to allow legal use on pollution
controlled vehicles is pending.
Basic Package Components
CNC Ported Combustion Chambers
CNC Ported Exhaust Ports
CNC Ported Intake Ports
Competition 5-angle Valve Job
Intake Valve, 2.020"
Exhaust Valve, 1.600"
1.450" OD Hydraulic Valve Spring, 120 lbs. on seat, .550" maximum lift, AFR #8020
10º 4140 Chrome Moly Retainers, AFR #8510
10º Valve Locks, AFR #9005
3/8" Rocker Studs, AFR #6410
5/16" Guide Plates, AFR #6107
Valve Seals, AFR #6611
Hardened Shims, AFR #6326
Intake Valve Seats, AFR #9063
Exhaust Valve Seats, AFR #9070
Bronze Valve Guides, AFR #9050
Special orders available upon request.
Specifications, Features, and Supporting Components
Head Torque: 100 Ft. Lbs. with 1/2" stud
Rocker Stud Torque: 55-60 Ft. Lbs.
Rocker Pedestal Torque: 25-30 Ft. Lbs.
Intake Port Gasket: 1.200"x2.000" Fel Pro #1250, AFR #6828
Exhaust Port Gasket: Fel Pro #1415, AFR #6837
Head Gasket: 1962-82, Fel Pro #1011-1, AFR #6808; 1983-93, Fel Pro #1011-2, AFR #6809
Head Bolts & Studs: Standard ARP, AFR #6323 & #6322
Head Bolt Washers: Manley, AFR #6320
Head Bolt Bushings, 1/2"-7/16" Standard ARP, AFR #6324
Stud Girdle: Standard
Suggested Manifold: Most EFI or Carburetor Style Manifolds
Spark Plug Starting Range: AC FR3LS
Combustion Chambers: 58cc or 64cc
Spring Pocket can be cut to 1.625, no deeper.
Valve Spacing: Standard
Rocker Arms: Standard, will not accept rail rocker arms
Valve Angle: Standard
Angle Mill: .008" per cc
Flat Mill: .006" per cc
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