Allison AT 545 Trans???

Bredeson1028 · 02-23-2010, 02:32 PM

I can get a allison At 545 trans and the bellhousing starters and flywheels to bolt up for a pretty good price. Can anyone tell me the pros and cons would be of doing this? I dont know much about these trannys

77machomopar · 02-23-2010, 02:36 PM

i dont tihnk it is a lock -up converter.

johnyb59 · 02-23-2010, 03:17 PM

Talk to the guys at Fleece perfomance. Here is a link to their conversion kit. Allison Conversion Kit

3rdcummins4x4 · 02-23-2010, 05:55 PM

Would this conversion even be worth it? Seems like you could get your current tranny built up for a whole lot cheaper.

BlackedOut02 · 02-23-2010, 06:30 PM

$2700 for the conversion, plus the money to build the allison. just build your auto and let it eat.

jcarl735 · 02-23-2010, 09:37 PM

dont do it!! allison 545s are a no no. if you want to swap in an allison do it right and get the stand alone harness and bellhousing from fleece performance or destroked, and put in an allison 1000

Gixxer_750 · 02-23-2010, 09:49 PM

why swap an allison? buck spruill went to the 47re for some reason (im guessing a good one) and he runs faster than any of us could ever imagine...
just keep the tranny you have, build it and enjoy your newfound power

jcarl735 · 02-23-2010, 10:45 PM

i agree, for the money you could wrap up in an allison swap you can build one nice 47re!

dodge24 · 02-24-2010, 02:02 AM

I think the 545s are geared more toward med duty applications. Like has already been said, why mess with an Ally when it's cheaper and more reliable to build what you have!

dkenny · 02-24-2010, 08:13 AM

why is a 545 a no, no?
there used with Cummins in schoolbuses? so they'll handle the torque and hp from the engine.
a 6 speed Allison would be nice.

-dkenny

tx02 · 02-24-2010, 10:12 AM

4BT and 6BT Cummins Adapter, Chevy 4L80E TH400 700R4 4L60E

This may help you out.....