SBC Small Block Chevy Intake Manifold Vortec Dual Plane 327 350 383 1997-Up Replace?Part?Number:DM-3202H,DM3202HF it for Chevy Vortec Engine:327,350,383 1997-Up Notes:Please Note Vortec Heads Only Have 8 Bolts that Hold the Intake On, 2 Bolts in Each Corner of the Intake, if your Intake has 12 Total Bolts then this Intake will not work.intake manifolds are the perfect performance upgrades for your engine. The intake manifolds feature a high-flow runner design to deliver improved power from idle to 6,500 rpm. These cast-aluminum manifolds are pressure-tested for leaks. Chevrolet manifolds will clear HEI ignition systems.Features:Part Type:Intake Manifolds, Carbureted UPC:Does not apply Intake Section Included:Complete Engine Block Style:Stock/ standard deck Carburetor Quantity:One Intake Style:Dual plane Basic Operating RPM Range:Idle-6,500 Intake Manifold Height:4.500 in.Intake Finish:Natural EGR:No