AFR 210cc Competition Eliminator SBC Cylinder Heads, Spread Port, 75cc Chambers

The Coolest Standard Racing Head Available!
These Spread Port AFR 210cc intake port small block Chevy angle plug cylinder heads are available in two stages of performance. The Race Ready version features 100% CNC ported intakes while the higher flowing Competition version features 100% CNC ported intakes with greater detail and higher flowing exhaust ports as well. Both come with 100% CNC ported 65cc or 75cc combustion chambers and 80cc exhaust ports with a 3/4" thick head deck (ideal for nitrous or blower applications). Standard valves are lightweight 8mm 2.080" intake and 1.600" exhaust with AFR's hardened ductile iron interlocking valve seats. The exceptional flow characteristics, 23? valve angle, and standard valve spacing make this the perfect head for 350 to 400 cid engines in bracket drag cars, sportsman oval trackers, and highly modified street class cars operating between 3000 and 7500 rpm (higher rpm ranges possible depending on combination of parts). The 210cc aluminum cylinder heads are available in either standard or spread port exhaust. No special parts are required. Drilling for centerbolt valve covers available as an option.
The exhaust ports are raised .250" over a standard GM L-98 cylinder head.

Note:
2.080 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, 2.080" x 5.000" Overall Valve Length	AFR #7255
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	210cc
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	Race Ready: 2.100 sp in, Comp 2.115 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	Street Pkg #6820
Exhaust Port Gasket, Fel-Pro #1409	Fel-Pro #1409
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.