nothing special about the belts. auto works just fine. here's my alt belt, Gates 7345 XL High Capacity V-Belt https://a.co/d/7BYxjJh
can't find the other. measure the length with a string and go to your FLAPS.
Here's my thread on my setup. Are you talking about this setup? https://www.boatliftanddock.com/product/706/lift-mate-dc-12v-wheel-assist-motor
Very different than what I ended up with. You already have the lift? Looks like it was made for 12v, and 13a is a lot less than the 30-60a per motor...
I have a length of tubing with a schrader valve on one end and gear lube fitting on the other and use a bike pump to pressurize. no need to make it complicated.
Doesn't sound like a bad ignition switch. If that was the case you'd lose your gauges at the same time the boat dies. Do you? Sounds more carb/fuel related. Can double check with a timing light, see if you're losing spark when it dies. If not, check fuel filter contents, move on to carb.
I want to emphasize that this sounds intimidating, but it's *so easy*. and your answer is obvious. this literally takes minutes to do and there's no guessing about the result.
despite popular opinion the 3.7 I think it's a great engine. power diff between a 3l is huge. 4.3 is a bit of a bump in power but not as much as you'd think. I might change my tune if I can get a few more hp when i rejet my carb. for the work involved I'd consider rebuilding the 3.7. @Scott...
I don't think there's a difference between marine and auto intake gasket. both composite IIRC.
https://www.rockauto.com/en/catalog/chevrolet,1998,c2500+suburban,7.4l+v8,1303467,engine,intake+manifold+gasket,5424
In that case, you're either dealing with the weep hole in the circulating pump, or just a run of the mill leak. Post a pic. Neither this nor the magnets = dead engine. What the cylinders look like who knows. Did you check compression yet?
