Serenity - The Rock Crawler Hauler

[PARTZKITTEN]

Originally Posted by NotKewl

Couldn't agree more. Tranny coolers are always on my build list for all auto transmissions regardless of build. I have actually thought about putting in a GM Allison 1000 since they do make adapter plates for the Allison 1000 to mount to the Cummins 12v. Eh, its early in the build, so we'll see.

If you swap let me know how it goes. I have a 5.9 and the AT545. I think I might blow up the trans. It has shift issues going into 3RD. I want something better. The 1000 swap sounds doable.

[EastCoastCB]

Originally Posted by NotKewl

Then it's a 545 because it just creeps up hills no matter the RPM. I found a 643 online used for $500 so I may just go ahead and have that shipped to me. The Allison 1000 is a great trans. I've always said that if you combined the Allison 1000, with the Cummins Diesel and stuffed that in whatever, it's a great vehicle. In fact, I have a 1967 Ford F-250 (I'm a ford guy) and I plan to put a 6BT or 4BT in it with a ZF-5, ZF-6, or Allison 1000. Already has a Dana 60 out back. Will make a nice rat rod tow pig rolling coal!

LKQ has reman 643's for $650.

[cadillackid]

Originally Posted by EastCoastCB

LKQ has reman 643's for $650.

last I saw they still have some... not sure what all you'll need to swapo a 643 into a 5.9, its an "easy" swap on an international engine but the gist of a 643 swap is you'll need your flywheel housing to be SAE2 (if the 5.9 is SAE2 adapted to SAE3 for the 545 you can remove the ring and the flexplate spacer.. you'll need a different flexplate.. the bolt pattern is larger.. the 643 weights 700 lbs (with converter) the 545 is about 400. on navistar V-8's you need a cross member.. on Navistar DT's you dont. not sure about 5.9. youll need to rework the cooler lines.. they use a #12 O-ring boss fitting.. so an adapter from #12 ORB to 7/8 Flare is needed. driveshaft needs shortened.. otherwise bolt it in and go.. (im doing a 545 to 643 swap in my DTA-360 bus as we speak..)



I did the 1000 swap from a 545 on my T-444E last year.. you can see what all that takes to make work in my thread called 'The RedByrd Transformation' mechanically its bolt and go if you get the right 1000 (no a GM duramaxx 1000 will not work in a school bus).. theres a possibility you could buy a new flywheel housing for your 5.9 from 'CAC,defero, others' which would allow for a GMC bell pattern to work... but the housing in an application where a 545 is used is an SAE3 (NOT same as a dodge 5.9 pickup truck).


I had my 1000 built with an SAE3 BELL / TAIL so it would mate right up to where my 545 was..


-Christopher

[cadillackid]

Originally Posted by PARTZKITTEN

If you swap let me know how it goes. I have a 5.9 and the AT545. I think I might blow up the trans. It has shift issues going into 3RD. I want something better. The 1000 swap sounds doable.

what are your shift issues going into 3rd? does it go 2-3-2-3-2-3 back N forth till you get the speed up a little?



-Christopher

[PARTZKITTEN]

Originally Posted by cadillackid

what are your shift issues going into 3rd? does it go 2-3-2-3-2-3 back N forth till you get the speed up a little?



-Christopher

Yes it jerks something fierce. I just had to make a gasket for the modulator (mechanical one) on the side of the trans. Allison kept trying to sell me the vacuum one. I must have something wrong with it. 25mph slowly is when it does it. 25mph floored is fine.

[NotKewl]

What else do you do with an old school bus in a nice neighborhood on Halloween? You toss fake blood and body parts all over it of course!