AFR 1388/1387 SBF 185/58 OR 72CC .600 LIFT ASSEMBLED YOUR CHOICE OF CHAMBER SIZE

Regular price $ 1,726.35

CALL SHANON AT 507 445 3235 WITH ANY QUESTIONS.

AFR's 185cc "Street" cylinder heads feature 100% CNC ported intake, exhaust & chambers, A356 aluminum castings and high quality components throughout. Recommended for engines from 302-393 cubic inches, operating up to 6000-6500 RPM. Legal for 1995 and older emissions controlled vehicles under CARB EO #D-250-3. Not compatible with OEM pistons.

185cc Aluminum SBF Cylinder Heads
Part # Rocker Type Combustion Chamber
1422 Stud Mount - Emissions Legal 58cc
1420 Stud Mount - Emissions Legal 72cc
1492 Pedestal Mount - Emissions Legal 58cc
1388 Stud Mount - Non-Emissions Legal 58cc
1387 Stud Mount - Non-Emissions Legal 72cc

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185cc Street Head Flow Chart
  .200 .300 .400 .500 .550 .600
Int 142 200 255 285 295 297
Exh 118 164 200 210 213 215

Test conducted at 28" of water (pressure) on Superflow 600
Bore Size: 4.060", 3/4" radius plate exhaust, 1 3/4" curved pipe

Included Components
100% CNC Ported Combustion Chambers
100% CNC Ported Exhaust Ports
100% CNC Ported Intake Ports
Competition 5-angle Valve Job
8mm Bead Lock Intake Valve 2.020" x 4.900" O.A.L.
7251
8mm Bead Lock Exhaust Valve 1.600" x 4.950" O.A.L.
7250
Pedastal 8mm Bead Lock Intake Valve 2.020" x 5.080" O.A.L
7263
Pedastal 8mm Bead Lock Exhaust Valve 1.600" x 5.100" O.A.L
7264
PAC Racing Spring 1.290" OD Hydraulic Roller Dual Valve Spring, 140 lbs on seat, .600" maximum lift, Max RPM 6300-6500 (upgrades available)
8017
7° Manley Steel Retainers 1.245" O.D x .885" I.D x .655" I.D
8514
7° Bead Lock Valve Keepers
9007
ARP 3/8" Rocker Studs
6409
Adjustable 5/16" Guide Plates
6103
Viton Valve Seals .600" O.D x .495" I.D
6612
Hardened Valve Spring O.D Locator 1.380" O.D x .570" I.D
8042
Ductile Iron Intake Valve Seats 2.131" O.D x 1.680" I.D x .375" Deep
9059
Ductile Iron Exhaust Valve Seats 1.650" O.D x 1.350" I.D x .375" Deep
9069
8 mm Bronze Valve Guides .502" O.D x 2.100" O.A.L
9051
Thermactor Air Injector Reducer Bushing (5/8"-11 x 7/16"-14)
6226
Specifications & Features:
Material
A356 Aluminum
Intake Port Volume
185cc
Intake Port Dimension
2.045" H x 1.205" W x 3/8 Radius
Intake Port Location
Stock
Exhaust Port Volume
70cc
Exhaust Port Dimension
1.355" H x 1.360" W
Exhaust Port Location
Stock
Combustion Chamber Size
58cc, 60cc, or 72cc
Valve Cover Bolt Pattern
Perimeter Bolt
Valve Angle
20°
Valve Spring Pocket Diameter
1.460" O.D
Max Valve Spring Pocket Machining
1.625" O.D
Deck Thickness
.750"
Minimum Bore Diameter
4.000"
Flat Mill
.006" per cc 54cc Max (from 58cc); 68cc Max (from 72cc);
Angle Mill
.009" per cc 48cc Max (from 58cc); 62cc Max (from 72cc)
Note:Angle mills might require a .120" Thick intake gasket.
Minimum Cross Sectional Area
2.025 sq. in.
Spark Plug Dimensions
14mm x .750" w/Gasket Seat
Head Bolt Diameter
1/2"

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CALL SHANON AT 507 445 3235 WITH ANY QUESTIONS.

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Warning: May cause cancer and reproductive harm.