Howard 454
New member
I have a 90 Mercruser with a stock 454ci, fresh water only. It has a cast iron spread bore intake manifold with a Q-jet carb. The engine cover height has 1/2” clearance at most.
Does anyone know of a good dual plane intake that will work, and most likely putting a Holley carburetor on it.
Does anyone know of a good dual plane intake that will work, and most likely putting a Holley carburetor on it.