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214CC LS1 4.8L/5.3L SMALL BORE STREET CNC CYLINDER HEAD

Part # 1526

$2,277.00

SOLD AS PAIR

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Bolt-on CNC Performance for your 4.8L/5.3L LS
 
Engineered as a complete airflow solution for 4.8L and 5.3L LS platforms, 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. 

*LSX bead locks and aftermarket bead locks are not interchangeable. GM made their bead lock radius and depth different. AFR locks are the same as GM LSX.

Included Components
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
8mm LSx 1.570 Exh Valve - 4.915" OAL, For Small bore 5.3L engines
Pacaloy Hydraulic Roller Spring 1.290 O.D., Premium Grade Chrome Silicon
Steel 7 degree Retainer 1.245 OD x .880 ID x .655 ID
7° Bead Lock Valve Keepers
Viton Valve Seals .600" O.D x .495" I.D
Hardened Valve Spring O.D Locator 1.380" O.D x .570" I.D

 

214cc Competition 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 1020
Bore Size: 3.780", intake 3/4" radius plate exhaust, 1 3/4" curved pipe


Specifications & Features:
Material
A356 Aluminum
Intake Port Volume
214cc
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"
Flat Mill
.006" per cc 58cc Maximum
 
 
Spark Plug Dimensions
14mm x .750" w/Tapered Seat
   
Recommended Components:
Intake Port Gasket
GM or Aftermarket
Exhaust Port Gasket
GM#12558573
Head Gasket
Cometic 3.930 Bore Size
Head Bolts (97-03)
ARP 134-3609 or AFR #6330
Head Studs (97-03)
ARP 234-4110 or AFR #6331
Head Bolts (04+)
ARP 134-3610 or AFR #6334
Head Studs (04+)
ARP 234-4317 or AFR #6335
 
 
Suggested Manifold
FAST 92mm, or 102mm
Spark Plug Starting Range
NGK TR55
 


Item# Description
1526


$2,277.00

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