AFR Cylinder Heads

Custom Piston Worksheet & Order Form (pdf)

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AFR Cylinder Heads_Renegade_Ford Small Block_20°_185cc_Street Head_72cc_Stud Mount_Assembled_Non-Emissions

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Price $2,065.00

Product Code: AFR-1387

Description

Technical Specs

AFR 185cc Street Heads are the cost effective performance choice over re-worked factory heads. They feature 100% CNC ported intake, exhaust and combustion chambers, A356 aluminum castings and high quality components are utilized 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. Component upgrade and machining options are available to customize AFR Heads to your specific build. AFR heads are available bare (without parts), call our tech line for details.

185cc CNC Ported Intake Runners
Non-Emissions
Stud Mounted Rocker Arms
A356 Aluminum
8mm Bronze Valve guides
5 angle valve job
Precision CNC machining
Multiple spring options

Assembled heads feature:

8mm Bead Lock Valves
PAC Racing Valve Springs
3/8 ARP Rocker Studs
Adjustable guide plates

www.P65Warnings.ca.gov

Description
Item Code	AFR-1387
Vendor	Air Flow Research
Product Type	Cylinder Heads
Product Model	Street Head
Engine Family	Ford Windsor 20°
Weight	70

Included Components

Combustion Chamber	100% CNC Ported
Intake Ports	100% CNC Ported
Exhaust Ports	100% CNC Ported
Valve Job	Competition 5 Angle
Intake Valves	8mm Bead Lock Intake Valve - 2.020 x 4.900 Overall Length
Exhaust Valves	8mm Bead Lock Intake Valve - 1.600 x 4.950 Overall Length
Valve Springs	PAC Racing Spring - 1.290 OD - Hydraulic Roller Dual Valve Spring - 140 lbs on seat - .600 maximum lift - 6,300 to 6,500 Max RPM
Retainers	7° Manley Chrome Moly - 1.245 OD x .885 ID x .655 ID
Keepers	7° Bead Lock
Rocker Studs	3/8 ARP
Guide Plates	5/16 Adjustable
Valve Seals	Viton - .600 OD x .495 ID
Spring Seat Cups	1.380 OD x .570 ID - Hardened
Intake Valve Seat	Ductile Iron - 2.131 OD x 1.680 ID x .375 Deep
Exhaust Valve Seat	Ductile Iron - 1.650 OD x 1.325 ID x .375 Deep
Valve Guides	8 mm Bronze - .502 OD x 2.100 Overall Length
Thermactor Air Injector Reducer Bushing

Recommended Components

Intake Gasket	AFR 6910
Note	Important: Do not use your AFR gasket as a template to port match your intake manifold as one AFR gasket is used for many AFR runner volumes.
Exhaust Gasket	AFR 6915
Head Gasket	Fel-Pro 1011-1
Head Bolts	ARP 154-3701 (1/2")
Head Studs	ARP 254-4401(1/2")
1/2 Bolt with 7/16 Thread	ARP 254-3708 (1/2")
Head Bolt Washers	Manley
Stud Girdle	AFR 6207
Intake Manifold	Performer or Performer RPM
Spark Plug Starting Range	Autolite 3924

Specifications and Features

Material	A356 Aluminum
Intake Port Volume	185cc
Intake Port Dimension	2.045 Height x 1.205 Width - 3/8 Radius
Intake Port Location	Stock
Exhaust Port Volume	70cc
Exhaust Port Dimension	1.355 Height x 1.360 Width
Exhaust Port Location	Stock
Combustion Chamber Volume	72cc
Valve Cover Bolt Pattern	Perimeter Bolt
Valve Angle	20°
Valve Spring Pocket Diameter	1.460 OD
Max Valve Spring Pocket Machining	1.625 OD
Deck Thickness	.750
Minimum Bore Diameter	4.000
Flat Mill	.006 per cc 54cc (58cc) Maximum_68cc Maximum (72cc)
Angle Mill	.009 per cc 48cc Maximum (58cc)_62cc Maximum (72cc)
Note	Angle milling may require .120 thick intake gasket
Minimum Cross Sectional Area	2.025 sq in
Spark Plug Dimensions	14mm x .750 w/Gasket Seat
CARB EO Number
Head bolt Diameter	1402 and 1472 - 7/16 _ 1399 - 1/2

Flow Chart

Flow Data: cfm @ 28 inches of Water

Lift	.200	.300	.400	.500	.550	.600
Intake	142	200	255	285	295	297
Exhaust	118	164	200	210	213	215

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