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Air Flow Research

AFR Mongoose LS 205cc Cathedral Port CNC Cylinder Heads

MPN:
1510
Availability:
Ships from Manufacturer
Shipping:
Free Over $98 In U.S. 48
Type:
Cathedral Port Cylinder Heads
Material:
A356 Aluminum
CNC Machined Intake Runner:
Yes
CNC Machined Exhaust Runner:
Yes
CNC Machined Combustion Chamber:
Yes
Minimum Bore Size (in.):
3.900
Bolts Per Cylinder:
4
Valve Angle (°):
15
Intake Runner Volume (cc):
205
Exhaust Runner Volume (cc):
84
Chamber Volume (cc):
66
Intake Valve (in.):
2.020
Exhaust Valve (in.):
1.600
Accessory Holes:
Yes
Coolant Cross Over 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:
5-Angle
Notes:
CARB #D-250-4
Quantity:
Sold as a pair
  • AFR Mongoose LS 205cc Cathedral Port CNC Cylinder Heads
  • AFR Mongoose LS 205cc Cathedral Port CNC Cylinder Heads
  • AFR Mongoose LS 205cc Cathedral Port CNC Cylinder Heads
  • AFR Mongoose LS 205cc Cathedral Port CNC Cylinder Heads
  • AFR Mongoose LS 205cc Cathedral Port CNC Cylinder Heads
  • AFR Mongoose LS 205cc Cathedral Port CNC Cylinder Heads
  • AFR Mongoose LS 205cc Cathedral Port CNC Cylinder Heads
$2,504.00

Description

AFR Mongoose LS 205cc Cathedral Port CNC Cylinder Heads

AFR’s, MONGOOSE, LS1 Cathedral Port cylinder heads are 100% 5-AXIS CNC ported and made with A356 aluminum. All heads come with high quality components, such as titanium retainers and Pac Racing Springs. Available in runner volumes from 210cc, 215cc, 230cc and 245cc. Component upgrades and different machining options are available to customize your AFR heads for your specific build. Minimum bore sizing is 3.900” to accommodate intake valve clearance.

This product is street legal in 50 states for 2005 and older emission controlled vehicles under (CARB #D-250-4) AFR’s 205cc LSX heads are the cost effective performance choice over re-worked factory heads. They feature 100% CNC ported intake, exhaust & chambers, A356 aluminum castings, Titanium retainers and high quality components throughout. Recommended for street, towing, or street/strip engines with displacements up to 383 cubic inches, operating up to 6300 RPM. Requires minimum 3.900” bore size for intake valve clearance. Component upgrade and machining options are available to customize AFR Heads to your specific build. 

Included Components Part #

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 2.020” x 4.900” O.A.L. AFR #7207

8mm Bead Lock Exhaust Valve 1.600” x 4.900” O.A.L. AFR #7228

PAC Racing Springs 1.290” OD Hydraulic Roller Dual Valve Spring

140 lbs. on seat, .600” maximum lift

Max RPM 6300-6500, less than 235* duration, upgraded spring

#8019 recommended for higher RPM & larger cams  AFR #8017

7º Titanium Retainers 1.245” O.D x .885” I.D x .655” I.D AFR #8512

7° Bead Locks 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 #804

 

205cc Competition Flow Chart
  .200 .300 .400 .500 .550 .600
Int 147 214 249 284 296 301
Exh 111 150 209 225 230 233

Test conducted at 28" of water (pressure) on Superflow 600
Bore Size: 3.900", intake 3/4" radius plate exhaust, 1 3/4" curved pipe

Installation Instructions located in picture section

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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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