I think an OP needs room in the engine compartment and the ass lightened. I went the easy route to Konrads. No faster that I can tell so far but they look cool.

Bumping the thread just because. I was looking at 1800runsnew's website and see they have a 400 hp 383 and a 460 hp 496. The "fully dressed" 383 is a couple of hundred bucks more than the "base" 496. What kind of numbers would this boat run with either setup? Would the big-blocks be faster or would the lighter weight of the small-blocks offset the hp/torque difference? It sure would be nice to have the extra space small-blocks would give you...

you can do 80 in a well set up hull with less then 500 and trs...

not sure of your weight and lay out. but it has been done, and i have made it happen real speed. best of luck.

I guess we'd have to weigh the boat. This is an early ('78) OP with basically nothing in the cabin other than some cushions. It's currently rigged with a pair of 330s and TRS drives. I'm trying to get some ideas since the motors have to come out anyway.

I have one suggestion BOOST.LOL

Actually forget it the OP doesnt have any room for boost.

Why doesnt anyone run an Ls set up with blowers or turbos?

I would think that would be a killer package a 6 liter Ls or something.

I agree, but we're talking big money here. A set of Arnesons would be pretty cool also, but again, big money. It's a cost-benefit analysis...

Bumping my own thread since it's 30 degrees out. What's the fastest 30/31 out there? I know about the 31 with triple outboards that does 96. Are there any faster? Does anyone want to hazard a guess on how many HP it would take to get a 30/31 to 100 mph? 700-750 a side?

I also was wondering what it would take it to get a OP to 100

A good trailer and tie downs.