AFR 210cc LT4 Competition Eliminator SBC Aluminum Cylinder Heads

Powerful and Proven Standard Valve and Stud Racing Head!
These reasonably priced AFR LT4 210cc cylinder heads in 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. Also features 100% CNC ported 55cc-65cc 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). No special parts are required, besides the LT4 intake manifold. Dual valve cover bolt pattern is standard.
The exhaust ports are raised .250" over a standard GM L-98 cylinder head.

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" O.A.L.	AFR #7255
8mm Bead Lock Exhaust Valve 1.600" x 5.030" O.A.L.	AFR #7254
1.550" OD Roller Dual Valve Spring w/ dampener, 220 lbs on seat, .710" maximum lift	AFR #8000
Manley 10° Steel Retainers 1.500" O.D x 1.120" I.D x .705" I.D	AFR #8505
10° Bead Lock Valve Keepers with lashcap recess	AFR #9009
ARP 7/16" Rocker Studs	AFR #6405
Adjustable 5/16" Guide Plates	AFR #6103
Viton Valve Seals .600" O.D x .495" I.D	AFR #6612
Hardened Valve Spring I.D Locator 1.550" O.D x .780" I.D	AFR #8045
Ductile Iron Intake Valve Seats 2.200" O.D x 1.750" O.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
8 mm Bronze Valve Guides .502" O.D x 2.100" O.A.L	AFR #9051

Specifications, Features, and Optional Supporting Components

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	55cc or 65cc
Valve Cover Bolt Pattern	Center and 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
Spark Plug Dimensions	14mm x .750" w/Gasket Seat
Carb EO#	Not Emissions Complient
Intake Port Gasket	AFR #6860
Exhaust Port Gasket, Fel-Pro #1405	AFR #6835
Head Gasket, 350cid Fel-Pro #1074	AFR #6803
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	GM LT4 or Edelbrock LT4
Spark Plug Starting Range	Autolite 3922

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. Angle mills might require .120" Thick intake gasket.