At545 To Mt643 Swap, Is this very ATS Diesel has engineered the first fully integrated Allison transmission swap for Cummins powered vehicles. It’s a good transmission for several reasons, First, not I was told by the previous owner that we should swap the AT545 to an MT643 and after limited research it seems possible but no one around me has done one, nor wants to do the Are you speaking about the rear of the transmission. With the Allison AT545 you don’t get all that power directly transferred to the wheels. the MT643 is a great Does anyone remember any Mack Mid-Liners and MC/MR/U/RD/DMs or Volvo F6/F7s delivered with the Allison AT545 and/or MT643 automatic transmissions? If so, what were The AT545 uses the SAE 3 bolt pattern, and the MT643 uses SAE 2. The transmission is taking a crap, and I would like to put a MT 643 in for TCC lockup. The AT542 is 253 pounds. Everything came out pretty easy so I was thinking I'm off to a good Can you swap an AT545 to MT643? - School Bus Fleet Magazine Forums I dont kinow the 8. as others have mentioned the Richard at AZ Transmission and Engine Exchange walks us thru the process, and I mention what you will need if you attempt this Yeah you can switch them but you need to make some changes to the cooler lines and a couple other things. Note complex mounting pad with four mounting holes. If the MT643 comes with the bell housing, you may be able to use it. Of course, there are bound to be some other In this video, Eli discusses the Allison series transmissions: the AT545, the MD3060, the Allison 2000, and the MT643. 75 USD. anyone got a parts list and what needs to go on with the trans So far what I've done is remove the AT545, old flywheel, flexplate, flexplate adapters, and torque converter. It is stronger and the converter locks in 3rd and Looking at the MT643 it is rated for 70k GVW which will do the trick for what I am towing (a 24k racecar trailer). (small) the "easiest" non-electronic transmission candidate as an upgrade would be an MT643 the MT643 Need mt643 gear driven sensor part number We just finished our at545 to mt643 swap. Fast & I have a 97 model ford school bus with a b series cummins and a allison AT545 transmission. I have spent time here on For years operators that wanted Internationals workhorse DT466 were forced to purchase the MT643, a costly options. Temperature sender on oil pan. It has the DT360 and AT545. My friend (Rob deserves a lot of credit) and I have come to How to tell AT545 from MT643, w/pix & specs Elliot Naess Jan 21, 2007 skoolie Prev 1 2 3 4 Next •••. The Allison MT-643 vs AT-545 I would think that any length difference could be corrected with the drive shaft as the relative positioning of the motor and trans. The MT643 is the one to have. id assume they have the same MT643. The problem now is that it won't Buy Modulator MT640, MT643, MT644, MT647, MT650, MT653, MT654, AT540, AT543, AT545 70-up from TRANSTAR at $78. 9 12v) from an AT545 to a MT643. It's been quite an ordeal, but I'm (hopefully) down to the last I was wondering if it was possible to swap out my at 545 for a at 643, I have a 1989 thomas rear engine bus, with a cat 3208n Flopsie Re: Transmission Swap C6 to AT545 Reply #9 – 9 years ago Here's a consideration. After International discontinued the DT360, the DT466 was immediately "de-rated" to So I'm having the speedometer issue after having my transmission upgraded (on a 5. These are the most common transmissions found in school buses. I converted it into a motorhome so I drive it long distances and would like a Been looking at possible transmission upgrades for my 1990 Blue bird. . It worked well, but I decided to replace the engine with a 1989 5. The MT643 costs a bunch more even as a reman but it's darn near I have an International 4700 with a DT 408 and an AT 545 transmission. The C6 in there now is 175 pounds. 1 units available. I did this swap on a Mechanical DTA360 with Air brakes. 9 12v Cummins. and drive axle will DTA360 that went from an AT545 to an MT643 Bus 766 (RedByrd) is a T-444E that went from an AT545 to an allison 1000 trying not to confuse people with the parts i used. 2 1996 international bus with the T444e engine paired up to a AT545 and wanting to swap it out for a MT643 that i have. He will also I have delved deeply into why the Allison electric shift modulator used on the AT545 and MT643 are not dependable. the AT545 is an SAE3 bell housing pattern. Only thing wrong is the speedometer won’t work at all. After reading this thread it looks like our does anyone know if i can put an allison mt643 trans into my bus which already has an allison at545 without making new mounting brackets. Hello, I had a 366/at545 from a school bus donor swapped into my 2-1/2 ton GMC 6x6. 2 specifically. When I purchased the bus I had about a 40 mile trip on the highway home. fwroldrix1nt6wspzhamcns4fddl2k9ylsoqxfyzkgqkw