AFR Cylinder Heads

Custom Piston Worksheet & Order Form (pdf)

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AFR Cylinder Heads_Renegade_Ford Small Block_20°_220cc_Competition Head_58cc_Stud Mount_Assembled_Non-Emissions

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Price $2,789.00

Product Code: AFR-1451

Description

Technical Specs

AFR 220cc Competition heads feature 100% CNC ported intake, exhaust and combustion chambers, A356 aluminum castings and high quality components throughout. Recommended for race applications or radical “Pro Street” style builds. . 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

220cc 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
7/16 ARP Rocker Studs
Adjustable guide plates

www.P65Warnings.ca.gov

Description
Item Code	AFR-1451
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 - 2.100 x 5.000 Overall Length
Exhaust Valves	8mm Bead Lock Intake Valve - 1.570 x 5.030 Overall Length
Valve Springs	PAC Racing Spring - 1.550 OD - Solid Roller Dual Valve Spring - 220 lbs on seat - .710 maximum lift - 7,200 to 7,400 Max RPM
Retainers	10° Manley Chrome Moly - 1.245 OD x .885 ID x .655 ID
Keepers	10° Bead Lock
Rocker Studs	7/16 ARP
Guide Plates	5/16 Adjustable
Valve Seals	Viton - .600 OD x .495 ID
Spring Seat Cups	1.550 OD x .780 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 6912
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 6839
Head Gasket	Fel-Pro 1011-1
Head Bolts	ARP 154-3603
Head Studs	ARP 254-4503
1/2 Bolt with 7/16 Thread	ARP 254-3708
Head Bolt Washers	Manley
Stud Girdle	AFR 6207
Intake Manifold	Vif Jr or Super Vic
Spark Plug Starting Range	Autolite 3924 (pump gas) or 3922 (race gas)

Specifications and Features

Material	A356 Aluminum
Intake Port Volume	220cc
Intake Port Dimension	2.265 Height x 1.325 Width - 3/8 Radius
Intake Port Location	Stock
Exhaust Port Volume	70cc
Exhaust Port Dimension	1.445 Height x 1.595 Width
Exhaust Port Location	Raised .375
Combustion Chamber Volume	58cc
Valve Cover Bolt Pattern	Perimeter Bolt
Valve Angle	20°
Valve Spring Pocket Diameter	1.580 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	2.345 sq in
Spark Plug Dimensions	14mm x .750 w/Gasket Seat
CARB EO Number
Head bolt Diameter	1/2"

Flow Chart

Flow Data: cfm @ 28 inches of Water

Lift	.200	.300	.400	.500	.600	.700	.800
Intake	149	205	264	296	318	334	338
Exhaust	126	173	220	246	251	255	258

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