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AFR Chevy 214cc Small Bore LS 4.8L/5.3L CNC-Ported Street Cylinder Heads, 65cc Chambers, Assembled

AFR 1526
AFR’s 214cc LS cylinder head package goes beyond a traditional upgrade. Complete Precision Street CNC porting works to create a smoother, more efficient airflow path from intake to valve, improving cylinder fill, combustion efficiency, and overall engine response. The result is a strong, usable mid-range and stable, repeatable top-end performance up to 6,500 RPM, making this package ideal for street, street/strip, and towing applications.

Built from the same robust permanent-mold casting as the rest of the Mongoose family, the AFR 214cc LS head features a .750" deck thickness to support boost and nitrous with confidence. Designed to support engine combinations up to 383 cubic inches, it delivers modern AFR technology in a cost-effective alternative to reworked factory heads, without compromising drivability or durability.

Sold as a set of heads
Shipping: FREE continental USA ground shipping on ALL AFR Cylinder Heads
Pricing: $2,277.00

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Description

Complete Precision Street CNC porting works to create a smoother, more efficient airflow path from intake to valve, improving cylinder fill, combustion efficiency, and overall engine response. The result is a strong, usable mid-range and stable, repeatable top-end performance up to 6,500 RPM, making this package ideal for street, street/strip, and towing applications.

214cc 4.8L/5.3L Small Bore Street Head Flow Chart
  .200 .300 .400 .500 .550 .600
Int 156 206 237 271 283 293
Exh 119 160 192 214 219 225

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 #
100% CNC Ported Combustion Chambers
100% CNC Ported Exhaust Ports
100% CNC Ported Intake Ports
Competition 5-angle Valve Job
 
8mm LSx 2.000 OD Int Valve - 4.900" OAL, For Small bore 5.3L engines AFR #7236
8mm LSx 1.570 Exh Valve - 4.915" OAL, For Small bore 5.3L engines AFR #7235
Pacaloy Hydraulic Roller Spring 1.290 O.D., Premium Grade Chrome Silicon AFR #8017
Steel 7 degree Retainer 1.245 OD x .880 ID x .655 ID AFR #8514
7° Bead Lock Valve Keepers AFR #9007*
Viton Valve Seals .600" O.D x .495" I.D AFR #6612
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

214cc

Valve Spring Type .600 Max Lift Hydraulic Roller
Intake Port Dimension 3.275"H x 1.120"W x5/16 top 3/8 bottom
Intake Port Location

Stock

Exhaust Port Volume 90.2cc
Exhaust Port Dimension 1.415" H x 1.710" W
Exhaust Port Location

Stock

Combustion Chamber Size

65cc

Valve Cover Bolt Pattern

Center Bolt

Valve Angle 15°
Valve Spring Pocket Diameter 1.510" O.D
Max Valve Spring Pocket Machining 1.525" O.D
Deck Thickness
.750"
Minimum Bore Diameter 3.780"
Spark Plug Dimensions

14mm x .750" w/Tapered seat

Head Gasket Cometic 3.930 Bore Size
Intake Port Gasket

GM or Cometic

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 
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

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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