I just bought a jet boat with a 440 in it. Of course the guy says it was rebuilt. I've never been a mopar person and I plan on pulling the motor and going through it to make sure everything is right. The question is, What does right look like on a 440? I'm thinking of taking the rotating assembly down and having it ballanced. Are there some cranks that are better than others? Are stock rods ok in these motors? Here is what he says was done to it. "the engine being stripped, the block was thermal cleaned, shot blasted and tumbled, magnafluxed, bored, honed, resurfaced on a mill with carbide cutters, the line bore inspected, the main bore sizes checked against spec, and finish washed prior to assembly, the crankshaft was resized and polished after being maganfluxed, the connecting rods were cleaned, magnafluxed, resized and straightened, the cylinder heads were thermal cleaned, magnafluxed, valve guides replaced using manley 1/2"od replacement valve guides, the guides were resized using diamond reamers, the 3-angle valve job was performed on a sunnen VGS machine with carbide tooling, the valve guide clearance was inspected with a dial bore guage and the valve seat runout was inspected against spec after machining with a dial indicated valve seat runout guage, the valves were cleaned, the stems polished, and refaced on a sioux vavle machine, the valve springs were inspected using a computerized vavle spring rate testing machine.
The entire engine was assembled by an engine shop using dial bore guages to check all the bearing clearances and the parts were cosmolined for rust inhibition.
The parts installed included and were all new: Pistons, rings, camshaft, lifters, oil pump, cam bearings, rod bearings, main bearings, timing set, and gaskets."
I'm not sure about rods were straightened, maybe he ment checked for straightness. Is there head work or valve train work that should be done to a 440 or that is recomended for our applications? And finally it has a single 4bbl on a single plain manifold, is this good for a jet boat and still get good performance? I like the look of two 4s on a highrise but i want to get it on the river 1st.
Sorry for the long post.