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Air Flow Research

AFR Enforcer LS 5.3L 210cc Cathedral Port Cylinder Head As Cast

PART NUMBER:
1507
Availability:
Ships from Manufacturer
Shipping:
Free Over $98 In U.S. 48
Type:
Cathedral Port Cylinder Heads
Material:
A356 Aluminum
CNC Machined Intake Runner:
As Cast
CNC Machined Exhaust Runner:
As Cast
CNC Machined Combustion Chamber:
As Cast
Minimum Bore Size (in.):
3.780
Bolts Per Cylinder:
4
Valve Angle (°):
15
Intake Runner Volume (cc):
210
Exhaust Runner Volume (cc):
82
Chamber Volume (cc):
64
Intake Valve (in.):
2.000
Exhaust Valve (in.):
1.570
Accessory Holes:
Yes
Coolant Crossover Ports:
Yes
Rocker Arm Rails:
No
Valve Guides Included:
Yes
Valve Guides Material:
Bronze
Intake Seat Material:
Ductile Iron
Exhaust Seat Material:
Ductile Iron
Valve Job:
3-Angle
Quantity:
Sold individually
  • AFR Enforcer LS 5.3L 210cc Cathedral Port Cylinder Head As Cast
  • AFR Enforcer LS 5.3L 210cc Cathedral Port Cylinder Head As Cast
  • AFR Enforcer LS 5.3L 210cc Cathedral Port Cylinder Head As Cast
  • AFR Enforcer LS 5.3L 210cc Cathedral Port Cylinder Head As Cast
  • AFR Enforcer LS 5.3L 210cc Cathedral Port Cylinder Head As Cast
$536.00

Description

AFR Enforcer LS 5.3L 210cc Cathedral Port Cylinder Head As Cast

AFR's 210 LS1 Enforcer Cylinder heads feature our Permanent Mold “As-Cast” Technology surfaces on the intake runners, exhaust runners and combustion chambers that allows for extremely accurate and repeatable port location/performance. This budget friendly head  is perfect for your OEM engine operating below 6300 RPM. They come fully assembled with the identical components found in our higher end CNC ported cylinder heads; such as PAC Racing springs, viton valve seals, machined bead valve locks (not stamped), hardened spring seats and our one piece 8mm 21 4N Stainless Steel valves. They are available without any parts for the DIY or Fully Assembled. Sold as a single piece, 2 are required per engine. 

Included Components:

  • 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” O.A.L. AFR #7235
  • PAC Racing Springs 1.290” OD Hydraulic Roller Dual Valve Spring AFR #8017
  • 140 lbs. on seat, .600” maximum lift, Max RPM  6300-6500
  • 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
210cc Street Head Flow Chart
  .200 .300 .400 .500 .550 .600
Int 136 199 246 272 276 265
Exh 93 140 180 204 211 215

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
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
Warning:Do not machine spring pad any deeper.
Deck Thickness
0.425"
Minimum Bore Diameter
3.780""
Flat Mill
.006" per cc 58cc Maximum
Spark Plug Dimensions
14mm x .750" w/Tapered seat

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Recommended Components:
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
Spark Plug Starting Range
NGK TR55

 

 
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Warranty Information

Effective on purchase made on or after January 1, 2010, AFR warranties AFR aluminum cylinder head castings for the lifetime of the product with proof of purchase to the original purchaser. Additionally, valves, guides, valve seats, valve springs, retainers, locks, studs, guide plates, and valve seals are warranted for two years to the original purchaser with proof of purchase. All returns must have a RMA number in order to be returned, call for a RMA number. Parts must be returned prepaid freight by the original purchaser. When it has been determined, by AFR at its sole discretion, that the product does indeed have a warrantable problem from workmanship, materials, or an undetermined cause (mystery failure) AFR will repair at no charge and reimburse UPS ground freight and return UPS ground freight. AFR will repair or replace the casting at its option. This warranty doesn’t cover fitness for purpose and/or merchantability on any product sold by AFR. Non-AFR castings are covered by the manufacturer of that casting.
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