Nitrous bosses, rear water outlets, two distributor clamp locations. Temperature sending unit boss clears all water necks. No provision for exhaust-heated chokes. The open air space from the AVENGER design separates the runners from the heat of the lifter-valley cover.
So, the air/fuel mixture stays cooler all the way to the heads, which produces a denser charge for more power. Runners are tuned to move the power band 1,000 rpm higher than Performer Air-Gap manifolds, from idle-5,500 rpm up to 1,500-6,500 rpm. The item "AVENGER SBC SMALL BLOCK CHEVY Aluminum Intake manifold 327,350,383,400" is in sale since Tuesday, November 13, 2018. This item is in the category "eBay Motors\Parts & Accessories\Car & Truck Parts\Engines & Components\Cylinder Heads & Parts". The seller is "bro-speed" and is located in Corona, California.This item can be shipped worldwide.