Edelbrock 7111 Performer Intake Manifold for Small Block Oldsmobile 350Performer Small Block Oldsmobile 350 Intake Manifold Edelbrock part #7111 Performer RPM Oldsmobile 350 intake manifold is designed for 330 350 403 c. i. d. Oldsmobile's and 1980 1 2 to 1985 307 c. i. d. engines with 5A heads (casting #3317). This Oldsmobile manifold is a high rise, dual plane design with 180 degree firing order engineered for maximum top end horsepower while maintaining throttle response. Port flange has extra material above the