If your drives are not fresh you should consider having them gone through before you start running them with the new power. On my 1st 37 I had bravos on stellings extension boxes with the drive shaft inside the boxes that hooked directly to the flywheel. When I supercharged the motors I raised the inner transom brackets 1 inch. With that change IMCO makes a long drive shaft that will work with a rubber coupler on the flywheel. I also ran all of the IMCO gears and bearings. Seems like the changes helped the reliability of the drives yet I still went through them at the end of every season. Take it easy running hard in rough water and keep a spare bravo on the shelf. If all else fails tape your wallet to the throttle to remind you how much it costs when you break a drive. Good luck with the project and I hope you enjoy it when it is done.

Ahhhh $hit !!! I thought you had #6's. Man, you'd better be real, real careful with them bravos. Enough4play gave you some real good advice, you'd better listen to him. LOL

Pretty sure Gary had 2 37's. The second one had 6's.

Thanks for the advice, the drive have about 30 hrs on them. I hope to just make it thru this year before spending more $$ on what the boat needs.

The 2nd one had 6s for a reason. When the water is rough and you want to play the last thing you want to do is break a drive.

Considering the fact that I put over 300 hours on a 37 with Bravos and 800hp per side I did find out what works and what does not work. After all of that the next 37 had #6s. I would never own another big horsepower boat w/o #6s. Hopefully the next boat will have 1300s and #8s. See you on the lake this year. LOL

The only boat I'd ever have bravos on, would be a fishin boat. And since I don't fish, I guess I'll never have a bravo. LOL

For a guy that does not fish you sure do have a lot of tuna on your boat most of the time. What are you running for drives on the fountain #3s or 5s.

Don't know nothin about fishin, the last time I was invited to go fishin, I brought the wrong gun, and was never asked again. LMAO

SSM IV's same as a V, only a 19 spline prop shaft instead of a 26.

Looks like a group of us will be on the lake Sunday. Launching from East Chicago and running to the city.