Air Flow Research
AFR Mongoose LS 245cc Cathedral Port CNC Cylinder Heads
- PART NUMBER:
- 1681
- 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.):
- 4.000
- Bolts Per Cylinder:
- 4
- Valve Angle (°):
- 15
- Intake Runner Volume (cc):
- 245
- Exhaust Runner Volume (cc):
- 88
- Chamber Volume (cc):
- 65
- Intake Valve (in.):
- 2.165
- 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
- Quantity:
- Sold as a pair
Description
AFR Mongoose LS 245cc Cathedral Port CNC Cylinder Heads
AFR’s 245cc LS1/LS2/LS6 “Competition” ported heads feature 100% CNC ported intake, exhaust & chambers, A356 aluminum castings, Titanium retainers and high quality components throughout. Recommended for race applications or radical “Pro Street” style builds with displacements up to 454 cubic inches, operating up to 6800 RPM. Requires minimum 4.000 bore size for intake valve clearance.
| Included Components | |||||||||||||||||||||||||||||
|
|||||||||||||||||||||||||||||
*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.
| 245cc Large Bore Competition Flow Chart | |||||||
| .200 | .300 | .400 | .500 | .550 | .600 | .650 | |
| Int | 164 | 233 | 290 | 332 | 347 | 356 | 360 |
| Exh | 131 | 185 | 227 | 247 | 249 | 257 | 267 |
Test conducted at 28" of water (pressure) on Superflow 600
Bore Size: 4.155", intake 3/4" radius plate exhaust, 1 3/4" curved pipe
Installation Instructions located in pictures
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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