Brand: Airflow Research (AFR)
Manufacturer's Part Number: 1690
Part Type: Cylinder Heads
Product Line: AFR 245cc LSX Mongoose Strip Cylinder Heads
Automotive Fittings Part Number: AFR-1690
Combustion Chamber Volume (cc): 73
Intake Runner Volume (cc): 210cc
Exhaust Runner Volume (cc): 88cc
Cylinder Head Style: Assembled
Cylinder Head Material: Cast aluminum
Intake Port Shape: Cathedral
Intake Valve Diameter (in.): 2.165 in.
CNC-Machined Combustion Chamber: Yes
CNC-Machined Intake Runner: Yes
CNC-Machined Exhaust Runner: Yes
Combustion Chamber Style: Heart
Intake Port Location: Standard
Exhaust Port Shape: Round
Exhaust Port Location: Standard
Intake Valves Included: Yes
Exhaust Valves Included: Yes
Exhaust Valve Diameter (in.): 1.600 in.
Valve Springs Included: Yes
Maximum Valve Lift (in.): 0.650 in.
Camshaft Style: Hydraulic roller
Outside Diameter of Outer Spring (in.): 1.260 in.
Damper Spring Included: Yes
Number of Springs Per Valve: Single
Retainers Included: Yes
Retainer Material: Titanium
Locks Included: Yes
Lock Style: 7 degree
Valve Stem Seals Included: Yes
Valve Stem Seal Style: Positive stop
Rocker Arm Studs Included: Yes
Rocker Arm Nut Thread Size: M10 x 1.0
Rocker Arms Included: No
Rocker Arm Nuts Included: No
Guideplates Included: Yes
Guideplate Pushrod Size: 5/16 in.
Valve Cover Mounting Style: Centerbolt
Accessory Bolt Holes Drilled: Yes
Intake Valve Angle: 15
Exhaust Valve Angle: 15
Valve Guides Included: Yes
Valve Guide Material: Manganese bronze
Valve Seats Machined: Yes
Valve Seat Machine Style: 5-angle intake/3-angle exhaust
Valve Seat Material: Ductile iron
Cylinder Head Color: Natural
Steam Holes Drilled: No
Oiling Style: Through head
Machined for O-Ring: No
Heat Crossover: No
Remanufactured: No
Quantity: Sold as a pair.
Notes: Must be used on 4 in. bore or larger.
Description:
Maximize 4.000 in. and larger bore combinations with AFR 245cc LSX Mongoose Strip cylinder heads. These aluminum cylinder heads feature 100 percent CNC-ported chambers, intake, and exhaust ports, and use A356 aluminum castings. They're also equipped with AFR's 3/4 in. thick deck and thicker port and combustion surfaces. designed for the LSX platform, these max effort cathedral port heads are recommended for race applications or radical "Pro Street" builds with displacements up to 454 cu. in., operating at or below 6800 rpm. Run AFR 245cc LSX Mongoose Strip cylinder heads—and get ready to devour a Cobra, Viper, or any other venomous contestant!