1964-77 Oldsmobile Small Block Exhaust Manifolds, 307, 330, 350, 403

1964-88 Oldsmobile 307/330/350/403 Performance Exhaust Manifolds, Pair

Divided center ports and 2.25-inch outlets improve the exhaust path in a cast-manifold design

These performance exhaust manifolds adapt the appearance and port design of Oldsmobile W-30/455 manifolds for the 307, 330, 350 & 403 small-block engines. Divided center ports separate the adjacent exhaust passages, and both outlets are sized for 2.25-inch exhaust. The passenger-side casting has no crossover-pipe opening to plug. Supplied as a pair for a compatible dual-exhaust installation. The installed engine and exhaust layout determine suitability; these are not Chevrolet small-block manifolds.

• 1964-88 Oldsmobile 307, 330, 350 & 403 V8 engine applications • Cast-iron manifolds for compatible dual exhaust • Divided center exhaust ports • 2.25-inch outlets on both manifolds • Passenger-side casting without crossover-pipe opening • Sold as a pair