whats it take ...say a triple bravo set up or twin # 6 set up

if memory serves correctly..I thought reggie had around 1200 per side in the old ohio steel 42 when he set it at 123.....remember the triple scarab vs fountain twin wars of the 90's

not as much as it did back then just raise the drives and put good props on the drives used to be deeper because the prop tech wasnt what is now

I would go with staggered 700-800hp motors and Arnesons. The stepped Fountains run very well with Arnesons, no reason to think the straight bottoms can't.

You eliminate most the guess work if you can find the hull efficiency and to the estimated total in the water weight the boat will be at test time. You can then just plug in various HP options to get the desired speed. (see the Speed Calculator on the BAM website).
I would start by trying to find the owner of the Ohio Steel boat and see if they can help you with weight, drive height, hull efficiency, etc.
The low cost way to 100MPH+ in a old 42" Fountain?

Buy Ohio Steel!

The owner was selling it cheap in the Fountain section a while back. It would have been a nice piece of history to own, escpecially with the original Ohio Steel paint job.

Woops.........I meant 42'. 42" is the amount you subtract to get the actual length

I think the Ohio steel boat is sold...

http://www.powerboatlistings.com/view/7604

Most 3 engine boats broke 100 mph or came very close!But I'd go with #6 x2 engines 700+HP

1000hp per side with 6's should be around 100(wet sumps)

The 3 engine boats ran 90-95