Griff

Cam is basically the same as a stock cam
Carb is too small
Compression is too high
You need better exhaust to see any real gains in performance.

From what you have posted, you will most likely not see any gains over a stock engine.

pqjack

like he said...the only thing you're going to gain is detonation...

picklenjim

That Crane cam is also availiable with a 114 LS as part #168791.
Not sure on the manifold being availiable with the brass water passage. You running in salt?
Agree with other posters you deffinately need Inconel exhaust valves especially running that compression and an exhaust up grade. Their good insurance. Stock exhaust valves will never withstand the heat with that compression and especially if you try running it through stock exhaust. Losing an exhaust valve gets real expensive. May want to concider different pistons to keep the compression around 9.5-9.75:1. If you already have those pistons you may want to concider having some of the dome milled off, if they can.

mr3dman

It may sound like bashing, but believe me, what is being said here isn't. It will save you $$ and headache later on.

Rudedog9988

I have not considered any of the replies bashing this is exactly what I was looking for, just more opinions on my current rebuild. The rebuild is due to a 7.4 mpi with way low compression and in ability to get the boat on plane effectively. The compression check was all over the place from 100 psi on two cylinders to 135 at best on three others. And the cylinder walls after teardrop were scored to he!! And back. What I have posted as initial specs is the parts I already have and was planning on using but am making adjustments as I find more information on what I need to do. The compression is an estimate from an online calculator I found. Once again thanks for all previous advice and advice to follow!