Putting an LS1 into a 90' Prostar 190?!?

Im new to the site but I have a 1990 Prostar 190 with a 351. Me along with my horsepower happy friends feel the ford engine isnt enough and are thinking about converting the boat to a 6.0 LS1. I was wondering if anyone has heard of anyone trying the swap or what your thoughts are on it.

[DooSPX]

possible yes, but you can build the 351 w/ GT40P heads, intake and a small cam and be at 320hp and close to 400 lb trq and rape the 6.0 LQ4/LQ9 easily out of the hole for a lot less then swapping the GM plant in. You need... GM motor mounts, bellhousing adapter, custom linkage bracket, plum a return line for the EFI system, marine starter, marine alt., new wet exhaust manifolds and a custom tune to run Speed Density and to either run open loop all the time or a tune to bypass all factory narrow band O2's and adapt a WB O2 in to the wet exhaust riser and tune for the WB only but that can be very tricky and would need a new OS to be flashed onto the ECM. Remember that boat engines are under constant load and lots of it compared to a truck/car that has OD and a minimum of 4 gears.
I looked into this a while ago... NOT worth it.
The fords have KILLER low/mid range torque which is normally at peak around the rpm you get pulling a skier up.
BTW, this is coming from a GM die hard right here. the only ford I currently own is in my 91. then we have a chevy car, a buick, and a GMC truck. just sold a camaro a little while ago. (miss that car) though I wouldnt mind having a early 70's bronco w/ a 351W built.

[east tx skier]

I wouldn't want to give up the Ford engine in my boat.

/obligatory engine pr0n.

[DooSPX]

good looking furd there Doug! lol
mind if I take it and swap into my 91. lol

[dummy]

FYI - LS1 is a 5.7L all-aluminum LS-series engine used in the 'Vettes, Camaros, and Firebirds.

Like DooSPX says, you need to do a ton of work to convert to the modern injected engine. I'd conservatively guess it'd be in the neighborhood of $5K (used engine)-$15K (new engine) for the full swap. This isn't a marine kit, but it gives you an idea: http://turnkeyenginesupply.com/Engin...1&key=packages

You can do a lot to your 351W for that.

[east tx skier]

Originally Posted by DooSPX

good looking furd there Doug! lol
mind if I take it and swap into my 91. lol

You would probably need a new engine box. That thing is dropped way down in the bilge on that boat.

Oh, and no. They don't make 'em any more. And this one only has 240 loving hours on it.

[DemolitionMan]

You can get 400 hp out of the 351 windsor. It cost me about $2,600.

[DemolitionMan]

Originally Posted by DemolitionMan

You can get 400 hp out of the 351 windsor. It cost me about $2,600.

It was about $4,000 total if you included msd ignition and the chrome accessories.

[DemolitionMan]

...............

[oldairboater]

Build your ford right and it will scream. Nothing replaces cubic inches but your not even close to getting the most out of your existing cubic inches. I have fuel injection on one motorcycle, my jeep, and my truck. FI is good when it is good but when it isn't good it is almost always a dealer item to fix. The fuel pump to maintain fuel pressure in an FI engine is a big problem. They go out with some regularity and they will not take too much abuse or stupidity. You can shorten the life of an electric fuel pump through your own stupidity. My other Harley is carbed and so are both of my boats. The boats are carbed with Holley's and the ignition is simple electronics........Almost bullet proof.