What Transmission? Can anyone help and advise?

[LennyB]

Im looking online at a 2002 Bluebird GM bus with an 8.1 Vortec engine. They say its an Allison Transmission but dont know which one. I see everyone says to stay away from the AT545. Can anyone tell me if they know which transmission this one would have?

The VIN#1GBM7T1E51J512930

Also if you know tell me if this is a good one or not? Appreciate you...

[EastCoastCB]

Originally Posted by LennyB

Im looking online at a 2002 Bluebird GM bus with an 8.1 Vortec engine. They say its an Allison Transmission but dont know which one. I see everyone says to stay away from the AT545. Can anyone tell me if they know which transmission this one would have?

The VIN#1GBM7T1E51J512930

Also if you know tell me if this is a good one or not? Appreciate you...

post a picture of the shifter.

[LennyB]

/Users/leonardbori/Desktop/97861207_267540714392405_1125003693196836864_n.jpg

[LennyB]

https://hosting.photobucket.com/imag...unds&crop=fill

[LennyB]

https://hosting.photobucket.com/imag...36864_n(1).jpg

[CHEESE_WAGON]

Here are some ways to identify.....



So it could be either a AT545 or MT643. You'll have to get pics of the transmission mount pad and oil pan, or crawl under.

[cadillackid]

behind an 8.1, most likely an AT545.. that and the 1000 series were the most common stuffed behind the 8.1's.. that shifter looks like AT545.. I dont remember the 8.1 being SAE2 (MT643 bell) capable but its possible they made a flywheel housing for it..

[EastCoastCB]

He sent me a pic of the shifter. Its either a 545 or 643. I'd bet its a 545.