AFR’s 210cc “Competition” LT4 heads feature 100% CNC ported intake, exhaust & chambers, A356 aluminum castings and high quality components throughout. Recommended for race applications and aggressive street/strip builds up to 400 cubic inches, operating up to 6500-6800 RPM. Component upgrade and machining options are available to customize AFR Heads to your specific build (please call for all available options). To ensure trouble free operation of AFR cylinder heads & parts please view the footnotes for additional information. AFR heads are available bare (without parts), call our tech line for details.
Included Components | |
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 | |
8mm Bead Lock Exhaust Valve, 1.600" x 5.030" Overall Valve Length | |
PAC Racing Spring 1.550" OD Solid Roller Dual Valve Spring, 220 lbs on seat, .710" maximum lift, Max RPM 7200-7400 | |
Manley 10° Steel Retainers 1.500" O.D x 1.120" I.D x .705" I.D | |
10° Bead Lock Valve Keepers | |
ARP 7/16" Rocker Studs | |
Adjustable 5/16" Guide Plates | |
Viton Valve Seals .600" O.D x .495" I.D | |
Hardened Valve Spring I.D Locator 1.550" O.D x .705" I.D | |
Ductile Iron Intake Valve Seats 2.200" O.D x 1.750" I.D x .375" Deep | |
Ductile Iron Exhaust Valve Seats 1.696" O.D x 1.325" I.D x .305" Deep | |
8 mm Bronze Valve Guides .502" O.D x 2.100" O.A.L |
210cc Race Ready Head Flow Chart | |||||||
.200 | .300 | .400 | .500 | .550 | .600 | .650 | |
Int | 145 | 199 | 248 | 285 | 301 | 309 | 311 |
Exh | 110 | 158 | 192 | 210 | 214 | 220 | 222 |
210cc Competition Head Flow Chart | |||||||
.200 | .300 | .400 | .500 | .550 | .600 | .650 | |
Int | 147 | 201 | 257 | 296 | 310 | 318 | 322 |
Exh | 120 | 160 | 214 | 225 | 229 | 235 | 237 |
Test conducted at 28" of water (pressure) on Superflow 1020
Bore Size: 4.060", 3/4" radius plate exhaust, 1 3/4" curved pipe
Specifications & Features: | |
Material |
A356 Aluminum
|
Intake Port Volume |
210cc
|
Intake Port Dimension |
2.200" H x 1.310" W x 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
|
Warning: Do not machine spring pad any deeper. | |
Deck Thickness |
.750"
|
Minimum Bore Diameter |
4.000"
|
Flat Mill |
.006" per cc 60cc Maximum
|
Angle Mill |
.009" per cc 55cc Maximum
|
Note: Angle mills might require .120" Thick intake gasket. | |
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
|
Recommended Components: | |
Intake Gasket | |
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 Port Gasket, Fel-Pro #1405 | |
Head Gasket, LT1 Fel-Pro #1074 | |
SB Chevy Head Bolt Kit, ARP #134-3701 | |
SB Chevy Head Stud Kit, 12 Point Nuts, ARP #234-4301 | |
Head Bolt Washers, Manley | |
AFR Stud Girdle | |
Suggested Manifold |
GM LT4 or Edelbrock LT4
|
Spark Plug Starting Range |
Autolite 3922
|
Item# | Description | Qty. | MSRP | Your Price | ||
---|---|---|---|---|---|---|
1101 |
210cc SBC LT4 Race Cylinder Head |
$3,107.55 |
ADD TO CART
|
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1057 |
210cc SBC LT4 Race Cylinder Head |
$2,459.46 |
ADD TO CART
|
Footnotes
AFR Small Block Chevy
General Recommendations for AFR Cylinder Heads:
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