For use with square bore style carbs. Provides standard bosses and tapped holes for street accessories such as A/C and alternator brackets. No provision for manual choke or exhaust crossover.2.06" x 1.18". 360° single plane high rise design for outstanding power from 3000 to 7500+ RPM. Cast-in bosses on intake runners, can be drilled and tapped for use with nitrous. Square bore carb bolt pattern for the Holley 4150/4160 style carburetor. Ideal port position - allows custom porting for maximum power. Dual distributor hold-down provisions for extra protection against distributor rotation. Accepts late-model water neck, air-conditioning, alternator, and HEI brackets. The item "Procomp SBC CHEVY 350 High Rise Aluminum Vortec Single Plane Intake Manifold" is in sale since Tuesday, September 22, 2020. This item is in the category "eBay Motors\Parts & Accessories\Car & Truck Parts\Engines & Components\Other". The seller is "streetrays" and is located in Austin, Texas. This item can be shipped worldwide.