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AFR - Airflow Research 1451
220cc Renegade Race Aluminum Cylinder Heads SB-Ford
033-1451
AFR - Airflow Research 1451 Details
Small Block Ford 220cc Renegade Basic Package Components
100% CNC Ported Combustion Chambers
100% CNC Ported Exhaust Ports
100% CNC Ported Intake Ports
Competition 5-Angle Valve Job
Intake Valve, 2.100'' x 5.006'' o.a.l.
Exhaust Valve, 1.570'' x 5.024'' o.a.l.
1.550'' OD Solid Roller Dual Valve Spring, 225 lbs. on seat, .710'' maximum lift, max RPM 7200-7400
10º Manley 4140 Chrome Moly Steel Retainers
10º Valve Locks
7/16'' Rocker Studs
Adjustable 5/16'' Guide Plates
Viton Valve Seals
Hardened Spring Cups
Intake Valve Seats
Exhaust Valve Seats
Bronze Valve Guides
Small Block Ford 220cc Renegade Race Head Specifications
Head Torque w/Moly Lube
100 Ft. Lbs. with 1/2'' Stud
Rocker Stud Torque
55 Ft. Lbs.
Intake Port Gasket, 1.400'' x 2.250'' w/ 3/8'' radius
Fel-Pro 375-1262R - DO NOT PORT MATCH Intake Manifold to Fel-Pro Gasket.
Exhaust Port Gasket
Fel Pro 375-1487
Head Gasket
Fel Pro 375-1134 or 375-1135
Head Bolts & Studs
Standard ARP
Head Bolt Washers
Manley Standard
Stud Girdle
Standard
Suggested Manifold
Victor Jr., Super Victor
Spark Plug Starting Range
Autolite 3922
Combustion Chambers
58cc
Spring Pocket can be cut to 1.580, no deeper.
Valve Spacing 60/40
Standard
Rocker Arms
Standard, will not accept rail rocker arms
Valve Angle
Standard
Angle Mill (6cc Maximum Optional Mill)
.008'' per cc
Flat Mill (3cc Maximum Optional Mill)
.006'' per cc
Specifications:
The Best 20° In-Line Head You Can Buy! AFR's NEW 220cc Renegade Ford is a fresh addition to our lineup that adds quite a punch to our already formidable and proven 20° Ford Heads. These new 220cc flow a massive 340 CFM, averaging an 11 CFM increase from .200''-.800'' lift over our previous best in spite of its 5cc smaller intake runner. This is the best small block Ford 20° inline head you'll find to provide huge horsepower to out run your competition. With the largest intake and exhaust runner volumes for our in-line Ford line up, these are the ultimate for NMRA Renegade or Hot Street classes. With lightweight 8mm diameter stem 2.100'' intake valves and 1.570'' exhaust valves these heads move massive amounts of air. Combustion chamber volumes are available in 58cc or 69cc. Exhaust ports are 80cc and bolt pattern are raised .375'' (3/8'') higher than stock, this rarely affects header or chassis fitment. AFR's new 220cc is the perfect choice for 347-427ci windsors engines operating from 4500 RPM and upwards. AFR's trademark 3/4'' thick cylinder head deck makes them ideal for heavy nitrous or blower applications. .
Installation Note: 2.100'' valves will require aftermarket pistons notched for valve clearance.
How do I place a order on these with the upgraded springs .
Ships directly from the manufacturer on 05/25/18
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