Afr 220cc Competition Eliminator Sbc Cylinder Heads, 65cc Chambers

AFR`s 220cc "Race Ready" and "Competition" heads feature 100% CNC ported intake, exhaust & chambers, A356 aluminum castings and high quality components throughout. This is AFR`s largest, best flowing head for use with conventional rocker arms. Recommended for race applications or radical "Pro Street" style builds. Component upgrade and machining options are available to customize AFR Heads to your specific build.
The Ultimate Standard Valve Location Racing Head!
AFR is reviving its popular 220cc version due to overwhelming requests from customers for a larger bolt on standard valve location head. Unlike the previous 220 cc, the new Eliminator version requires no special parts. Valves and studs are in stock GM L98 locations just like the very popular, 180, 195, and 210 series heads. They do not require offset rockers of any kind yet are still able to muster flow numbers that are in raised runner head territory. A 329 CFM head that is perfect for someone wanting to retain all their standard components while still having the airflow to reach that elusive 700 HP mark in aggressive drag race trim. Displacement ranging from a high RPM 350 to a 427 CID with natural applications in the various sportsman classes, bracket/drag cars, oval track, and larger displacement street machines with typical operating ranges between 4000 to 8000 RPM depending on application. As always they come with AFR's trademark 3/4" thick head deck (ideal for nitrous or blower applications). Standard valves are lightweight 8mm 2.100 intake and 1.600 exhaust with AFR's hardened ductile iron interlocking seats. Drilling for centerbolt valve covers available as an option. This head is not for every large displacement combination so if you are unsure whether this is the right AFR head for you, we always encourage you to contact us directly before purchasing.
The exhaust ports are raised .250" over a standard GM L-98 cylinder head.

Note:
2.100 valves will require aftermarket pistons notched for valve clearance.

Basic Package Components Part # 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, 2.100" x 5.000" Overall Valve Length AFR #7256 8mm Bead Lock Exhaust Valve, 1.600" x 5.030" Overall Valve Length AFR #7254 PAC Racing Spring 1.550" OD Solid Roller Dual Valve Spring, 220 lbs on seat, .710" maximum lift, Max RPM 7200-7400 AFR #8000 Manley 10? Steel Retainers 1.500" O.D x 1.120" I.D x .705" I.D AFR #8511 10? Bead Lock Valve Keepers AFR #9009 ARP 7/16" Rocker Studs AFR #6405 Adjustable 5/16" Guide Plates AFR #6103 Viton Valve Seals AFR #6612 Hardened Valve Spring I.D Locator 1.550" O.D x .780" I.D AFR #8048 Ductile Iron Intake Valve Seats 2.200" O.D x 1.750" I.D x .375" Deep AFR #9060 Ductile Iron Exhaust Valve Seats 1.696" O.D x 1.325" I.D x .305" Deep AFR #9070 Bronze Valve Guides AFR #9051
Specifications, Features, and Optional Supporting Components Head Material A356 Aluminum Intake Port Volume 220cc Intake Port Dimension 2.240" H x 1.310" W 3/8 Radius Intake Port Location Stock Exhaust Port Volume 80cc Exhaust Port Dimension 1.420" H x 1.545" W Exhaust Port Location .250" Raised Combustion Chamber Size 65cc or 75cc Valve Cover Bolt Pattern  Perimeter Bolt Valve Angle 23? Valve Spring Pocket Diameter 1.580" O.D Max Valve Spring Pocket Machining 1.750" O.D Deck Thickness .750" Minimum Bore Diameter 4.000" Flat Mill .006" per cc 60cc Maximum Angle Mill .009" per cc 55cc Maximum Minimum Cross Sectional Area 2.180 sq. in. Note:Angle mills might require a .120" Thick intake gasket. Spark Plug Dimensions 14mm x .750" w/Gasket Seat Intake Gasket, Fel-Pro #1206 AFR #6820
Exhaust Port Gasket, Fel-Pro #1405 AFR #6835
Head Gasket, 350cid Fel-Pro #1003 Street Pkg #6800
Head Gasket, 400cid Fel-Pro #1014 AFR #6802 SB Chevy Head Bolt Kit, ARP #134-3701 AFR #6310 SB Chevy Head Stud Kit, 12 Point Nuts, ARP #234-4301 AFR #6305 Head Bolt Washers, Manley AFR #6320 Stud Girdle GM L98 AFR #6200 Suggested Manifold AFR Titan TXR #4801
Suggested Manifold AFR Titan TXS #4802
Spark Plug Starting Range Autolite 3922 Carb EO# Not Emissions Complient Important: Do not port match you intake manifold to any Fel-Pro gasket as it does not precisely match AFR heads.
Note: Milling head deck will affect flow numbers. Angel mills might require .120" thick intake gasket.