| |
Click on image for the lowdown. 
====
|
| | Forums66 Topics128,051 Posts1,055,768 Members48,426 | | Most Online14,466
Apr 26th, 2026 | | AD Chevy Trucks  Over 6,000 pictures Brad Allen has an awesome collection of Chevrolet factory pictures that he has set up from film strips. Check them out!
Lots of work on Brad's part ... pure enjoyment (and references) for you!
|
| THANKS!
For helping keep this great
old truck web site
on the Internet for over 30 years! and not clogged down
with Ads!  Again, thanks!
|
| | | Joined: Sep 2011 Posts: 82 'Bolter | | 'Bolter Joined: Sep 2011 Posts: 82 | Does anyone have any info on the Cummins 6AT? I have a line on one but am concerned about fitment in my truck. I know it was built as a replacement for the 292. I've purused the net, but cannot find any dimensions on it. Thanks. | | | | | Joined: Feb 2009 Posts: 8 New Guy | | New Guy Joined: Feb 2009 Posts: 8 | I can measure my 6BT or may already have the measurements if it will help I dont know what the AT originally came in. I put it in my '84 K30
Last edited by yousesteers; 06/12/2013 11:03 PM.
Clint Youse
Paris,MO
| | | | | Joined: Sep 2011 Posts: 82 'Bolter | | 'Bolter Joined: Sep 2011 Posts: 82 | Yousesteers,
Thank you but the 6AT is a completely different beast from the 6BT. It is a 3.4L straight 6 diesel created by Onan (model L634T). When Cummins bought out Onan, they rebadged the engine as a 6AT. It was designed as a direct replace for the 292. Details are scarce on the web and parts also appear to be scarce and expensive. I have a line on one and think it'd be cool to have a straight 6 diesel in my truck that could actually pull it (compared to the OM617's). Thanks again!
Last edited by New_Ton; 06/13/2013 10:25 AM.
| | | | | Joined: Jul 2008 Posts: 326 'Bolter | | 'Bolter Joined: Jul 2008 Posts: 326 | N_T;
There are a couple of Onan L634's on ebay. They're in generators. There are pictures and it doesn't look like a "direct replace for a 292". i.e. no side motor mounts and fairly deep block and sump. The one with a turbo is very tall with the turbo mounted high above the valve cover. They look like beasts though.
SimS
P.S.
I have been doing some more research and chatting with another Stovebolter. There IS an automotive/vehicle version of this motor and the OP is correct in that there is a bolt in version of this engine that UPS used to repower it's fleet of Chevy 292 and Ford 300 delivery vans back in the day.
Last edited by SimS; 06/15/2013 7:16 AM. Reason: Correction/Additional Info
| | |
|
|
| |
