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AFR Chevy 210cc Enforcer As-Cast LS 4.8l, 5.3l Cylinder Head, 64cc Chambers, Assembled

AFR 1506
AFR's 210 LS1 Enforcer Cylinder Head features their Permanent Mold “As-Cast” Technology surfaces on the intake runners, exhaust runners and combustion chambers that allow for extremely accurate and repeatable port location/performance. This budget-friendly head is perfect for your 3.780" Bore 4.8l/5.3l OEM engine operating below 6300 RPM.

They come fully assembled with the identical components found in their higher-end CNC ported cylinder head; such as PAC Racing springs, Viton valve seals, machined bead valve locks (not stamped), hardened spring seats and ductile iron seats (not powdered metal) their one-piece 8mm 21 4N Stainless Steel valves. They are available without any parts for the DIY.

Sold as a single piece, 2 pieces required per engine.
Shipping: FREE continental USA ground shipping on ALL AFR Cylinder Heads
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Description

The all-new LS1 210cc Enforcer Cylinder Head feature 2.000" intake valves, 1.570" exhaust valves and come assembled with their 8017 springs for hydraulic roller camshafts. Designed to work with the factory GM stand and rockers they will support up to a 0.600" lift camshaft and up to 6,500 RPM.

210cc LS1/LS2/LS6 Street Head Flow Chart
  .200 .300 .400 .500 .550 .600
Int 135 199 246 272 276 265
Exh 93 140 180 204 211 215

Test conducted at 28" of water (pressure) on Superflow 600
Bore Size: 4.060", 3/4" radius plate exhaust, 1 3/4" curved pipe 

Basic Package Components Part #
As-Cast Combustion Chambers
As-Cast Exhaust Ports
As-Cast Intake Ports
3-angle Valve Job		  
8mm Bead Lock Intake Valve 2.000” x 4.900” O.A.L. AFR #7236
8mm Bead Lock Exhaust Valve, 1.570” x 4.915" Overall Valve Length AFR #7235
PAC Racing Spring 1.290" OD Hydraulic Roller Dual Valve Spring,
140 lbs on seat, .600" maximum lift, Max RPM 6300-6500		 AFR #8017
7° Chrome Moly Retainers 1.245” O.D x .885” I.D x .655” I.D AFR #8514
7° Bead Lock Valve Keepers AFR #9007
Viton Valve Seals .620" O.D x .490" I.D AFR #6615
Hardened Valve Spring O.D Locator 1.380" O.D x .570" I.D AFR #8042

Specifications, Features, and Optional Supporting Components
Head Material

A356 Aluminum
Intake Port Volume

210cc
Intake Port Dimension

3.190"H x 1.015"W x5/16 top 3/8" bottom
Intake Port Location

Stock
Exhaust Port Volume

82cc
Exhaust Port Dimension

1.400" H x 1.660" W
Exhaust Port Location

Stock
Combustion Chamber Size

64cc
Valve Angle 15°
Valve Spring Pocket Diameter

1.500" O.D
Max Valve Spring Pocket Machining

1.500" O.D
Deck Thickness

0.425"
Minimum Bore Diameter

0.425"
Spark Plug Dimensions

14mm x .750" w/Tapered seat
Head Gasket

Factory GM LS2
Intake Port Gasket

GM or FAST
Exhaust Port Gasket

GM#12558573
Head Bolts (97-03)

AFR #6330
Head Studs (97-03)

AFR #6331
Head Bolts (04+)

AFR #6334
Head Studs (04+)

AFR #6335
Head Bolt Washers, Manley

AFR #6320
Suggested Manifold

FAST 90mm, 92mm, or 102mm
Flat Mill .006" per cc 58cc Maximum
Spark Plug Starting Range NGK TR55 
Important: Do not port match you intake manifold to any Fel-Pro gasket as it does not precisely match an AFR head.
Warning:Do not machine spring pad any deeper.
Note: Milling head deck will affect flow numbers.

Details

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Shipping Information

  • Item Requires Shipping
  • 65.0 lbs.
  • W12.0000” x H12.0000” x L24.0000”
  • Free Basic Shipping
  • This item ships in its own box.
  • FREE continental USA ground shipping on ALL AFR Cylinder Heads
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