OLDSMOBILE 307, 330, 350, 403 DUAL PLANE HIGH RISE INTAKE MANIFOLD FOR 69 CC ALUMINUM HEADS ONLY

Oldsmobile High Performance High Rise intake manifolds for our 69 cc heads  have a high-rise, dual-plane design. They produce incredible top-end horsepower, while retaining good throttle response. Our High Performance High rise manifolds have plenums and runners to match the free-flowing exhaust, high-lift cams, and other modifications of a high-output engine. They’re intended for high performance street or competition engines that run from 1,500 to 6,500 rpm.  Our manifolds are set up to fit Quadrajet and 4150 square bore carbs . This manifold will only work our 69cc aluminum heads .