Product Description

AFR Mongoose LS3 Port 12 Degree 6 Bolt Complete CNC Heads

AFR Mongoose 260cc Rectangle Port Cylinder Heads

 AFR’s 260cc LS3 “Mongoose” heads feature 100% CNC ported intake, exhaust and chambers using our advanced engineering and flow techniques to produce the ultimate Rectangle Port head available today. Featuring A356 aluminum castings, titanium retainers and the highest quality components, throughout. They’re designed for 4.000 or larger bore applications up to 454 CI, operating up to 7000 RPM

Features Of Your New AFR Mongoose 260cc Cylinder heads

• 12 degree valve angles
• 69cc Chamber
• Cast from A356 Aluminium
• Accepts factory LS3 Rockers (Note requires AFR Stands)
• CNC ported combustion chambers
• Port to valve seat blending (Bowl blending) 

Flow Rating CFM Results

Your New AFR Cylinder Heads Package Includes 

• AFR 260cc Mongoose Rectangle Port Cylinder Heads (Pair)
• 6 bolt cylinder heads
• Complete 5-Axis CNC port & polish program
• 8mm Bead Lock Intake Valve, 2.165" x 5.195" Overall Valve Length
• 8mm Bead Lock Exhaust Valve, 1.600" x 5.200" Overall Valve Length
• 8 mm Bronze Valve Guides .502" O.D x 2.550" O.A.L
• PAC Racing Spring 1.270" OD Hydraulic Roller Dual Valve Spring, 155 lbs. on seat, Max RPM 7000-7200
• 7° Titanium Retainers 1.245" O.D x .885" I.D x .655" I.D
• 7° Bead Lock Valve Keepers
• Viton Valve Seals .600" O.D x .495" I.D
• Assembled

Want To Chat With Us To Discuss Your AFR Cylinder Head Upgrade?

Sure! Give us a call on (03)8595 4343 OR Simply click Get In Touch & schedule a time that best suits you. We will have one of our sales consultants contact you at your convenience.

Alternatively, We are available for Live Chat right now!

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Shop with confidence with free freight Australia wide & discounted pricing.