Up until recently, I thought it was T45<T3650. But now I'm hearing that the T45 transmission is much more durable and will last longer as long as you don't power shift it. Two people I know with T3650s have told me they'd rather have a T45, so now I'm starting to wonder which one I should get, or if I should just continue to save and get a T56.

 

powershifting any tranny is bad for it. youve heard a lot of problems with the 3650s froma flaw from ford. the early 3650s were fine. mine hasnt had a problem yet.

 

If you are going to get a 5-speed, stick w/ a TKO. Otherwise go for the T56. Also, the TR3650 is stronger than the T45. It's only problem is the TSB to address the 1-2 shift problem.

 

I haven't had a single problem with my 3650. The only problem i've had is my clutch taking a dump.......otherwise it's pretty stout...

 

I had the 3650 for about a month, hated it POS! 5th gear would barely go in and it was hard to get into reverse, i might have gotten a crappy one but my friends 03 does the same thing

go with the TKO 600 and Mcleod twin disc clutch like i did!!

 

3650 is a fine tranny... not the strongest but a good unit. If you plan to whip it like an orphan then buy a tko. If you're going to be human to it then a 3650 is a great option. I've burned up 3 of them but the failures could always be traced back to clutch issues which seem to have been worked out.

3650 is quite a bit stronger than the t45. You can make a t45 into a pretty stout box too with a little build up action. The dividing line should probably be your budget and how intent you are on trying to break it.

T56's... meh. I think those are really only useful for cars that see road courses with lots of straightaways.

 

3650 is much better then the tranny that replaced it. thats why the GT's no longer have the T45 anymore.