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AFR LS3 260cc Mongoose Cylinder Heads for GM LS: Big Airflow That’s Emissions-Legal

It’s not every day that you can get emissions-legal cylinder heads that flow 377 CFM at .650 inches of valve lift, but AFR’s LS3 260cc Mongoose Cylinder heads certainly fill the bill. Designed for LS engines with a 4-inch or larger bore, the fully assembled Mongoose heads have CNC-machined runners and combustion chambers, and are ideal for street and mild race engines that make power up to 7,000 RPM.

Fully assembled LS3 260cc Mongoose Cylinder heads are emissions-legal in all 50 states for 2007-2016 GM vehicles with a 6.2L LS3 engine (CARB E.O. D-250-5). That covers Camaros, Corvettes, and a slew of GM trucks. Bare castings are also available.

Specifications
• Intake Runner: 260cc CNC-ported
• Exhaust Runner: 95cc CNC-ported
• Combustion Chamber: 69cc CNC-ported with 5-angle valve job
• 2.165" intake/1.600" exhaust stainless steel valves
• PAC Racing 1.270" dual valve spring, .650" maximum valve lift
• 7° valve locks and titanium retainers
• Bronze valve guides and Viton valve seals
• Deck Thickness: 3/4"
• Head Bolt Pattern: 4-bolt (AFR-1845) or 6-bolt (AFR-1840)
• Rocker rail stands included

CHECK OUT AFR’S LS3 260CC MONGOOSE CYLINDER HEADS AT SUMMIT RACING