Carb

What carb, jetting and fully advanced timing.

HP500 - 800 cfm with as from Merc staggard jetting.
Was on there when I bought boat.
Never got a chance to check timing. Only ran it once for about 1/2 hr. Was a little chilly@38° that day..

Dropped it at machine shop yesterday.
We're going to save it. Besides the one spot on the piston from detonation the pistons and bores are decent enough to hone, new rings, polish the crank, cam bearings and put it back together.
The heads I still need to work on.
Cam... as much as I would like to go roller that just snowballs into a bunch of cash I don't want to put into this boat. Not to mention to many options on what are "good" roller lifters.
That being said, I'm looking at the Comp Extreme Marine line.
It had a Crane CCH-286-2 #134241 in it. H-286-2 Hydraulic Flat Tappet Camshaft for Chevrolet 1967-1995 V-8, 396-454

Thinking to go to the Comp XM288H 11-244-4 - Xtreme Marine? Hydraulic Flat Tappet Camshafts

Edit: Thinking that is to much cam.