Automatic transmissions
 

Curious... anyone run an automatic trans in their boats? I have been toying with the idea however room is an issue in my configuration.
Any suggestions on availability of a short automatic to use in conjunction w/ the mercruiser /bravo1 powerplant?

I have built th-400's for v-drives in the past,I remember hearing about someone using powerglides with shorty kits in front of outdrives,Smitty

You know what they say, Slip and Slide Powerglide. The shifting can be taylored for just about any application. I don't think I would be worried about blowing up drives. Just don't put a tranny brake on it. I think the Manufacturer is J&W, they make the supercase or something. I've seen a shorty kit for it that replaces the tailshaft and only extends an inch or two. Good luck.

years ago merc tried it...saw a test with it but then never heard anything more on it...but I have had the same thoughts for years, I was involved with a drag boat team years ago(many) and we were starting to play with trans's then, most ended up running lenco's and they were hard on them but worked well I thought..Rob

You would have to think there would a lot of load (heat) on auto's and the slip factor unless they have some kind of lock-up converter?

you would not use a converter, they make a drive that drives from the flywheel strait to the ft pump...

trans
 

we have a hustler here in nashville with triple cobras and number fives with two speed chrysler 727. i know old school setup but it does work.

I have a B&M 2-speed trans in my boat. B&M no longer makes this trans. I purchased mine from Brummett Marine in Cali. He may still make them. I got mine more than 5yrs ago.
It IS a modified 727 torqueflight as the poster above mentioned. It is coverted to be a plug-in replacement for a Borg 72c.
It's pretty cool. 2nd gear is 1:1 ratio like a normal one-speed trans. 1st & reverse are much lower ratios. It makes docking & idling in no-wake zones possible with big engine/big prop applications. Mine is manual shifted by solenoid. All I have to do is flip a switch to go from 1st to second gear.
Mr Brummett told me there is a manual shift version as well.

I love this set-up.

Is it the same length as the 72C?

Jeff