Go Back  Offshoreonly.com > Technical > Drives and Lower Units
Automatic transmissions >

Automatic transmissions

Notices

Automatic transmissions

Old 12-22-2008, 12:58 AM
  #1  
Registered
Thread Starter
 
Join Date: Jan 2006
Posts: 6
Likes: 0
Received 0 Likes on 0 Posts
Arrow 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?
PROGRESSIVEAUTO is offline  
Old 12-23-2008, 02:03 AM
  #2  
Platinum Member
Platinum Member
iTrader: (1)
 
articfriends's Avatar
 
Join Date: Jun 2004
Location: Frankenmuth
Posts: 6,634
Received 228 Likes on 115 Posts
Default

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
articfriends is offline  
Old 12-30-2008, 10:58 PM
  #3  
Registered
iTrader: (1)
 
Join Date: Aug 2004
Location: Whitefish Chain - Crosslake, MN
Posts: 423
Received 3 Likes on 3 Posts
Default

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.
ACrooks69 is offline  
Old 12-31-2008, 07:52 AM
  #4  
Registered
 
Join Date: Nov 2005
Location: Fredericksburg, Va
Posts: 4,555
Likes: 0
Received 1 Like on 1 Post
Default

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
ezstriper is offline  
Old 12-31-2008, 08:59 AM
  #5  
Registered
 
Join Date: Feb 2004
Location: LOTO
Posts: 191
Received 1 Like on 1 Post
Default

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?
midwest272 is offline  
Old 12-31-2008, 03:50 PM
  #6  
Registered
 
Join Date: Nov 2005
Location: Fredericksburg, Va
Posts: 4,555
Likes: 0
Received 1 Like on 1 Post
Default

you would not use a converter, they make a drive that drives from the flywheel strait to the ft pump...
ezstriper is offline  
The following users liked this post:
articfriends (01-15-2022)
Old 01-01-2009, 07:58 PM
  #7  
Registered
 
Join Date: Dec 2007
Location: Nashville Tn
Posts: 112
Likes: 0
Received 0 Likes on 0 Posts
Default 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.
Jerry Sabatino is offline  
Old 01-07-2009, 10:51 AM
  #8  
Registered
 
Join Date: Jan 2009
Location: Lake St.Clair, Mi
Posts: 10
Likes: 0
Received 0 Likes on 0 Posts
Default

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.

Last edited by 28' Aeromarine; 01-07-2009 at 11:54 AM.
28' Aeromarine is offline  
Old 01-07-2009, 12:39 PM
  #9  
Registered
 
Join Date: Jan 2006
Location: Minneapolis
Posts: 715
Likes: 0
Received 0 Likes on 0 Posts
Default

Is it the same length as the 72C?

Jeff
hallj is offline  
Old 01-07-2009, 12:59 PM
  #10  
Registered
 
Join Date: Jan 2009
Location: Lake St.Clair, Mi
Posts: 10
Likes: 0
Received 0 Likes on 0 Posts
Default

Exactly the same. Direct bolt on replacement unit.
I did have to replace the inner transom plate, flywheel & bell housing, which came with the kit. It's a complete kit.
28' Aeromarine is offline  

Quick Reply: Automatic transmissions


Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service - Do Not Sell My Personal Information -

Copyright 2021 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.