Well long story short, its coming time to replace the 700R4 and i really love the manuals. I want to be able to run 4.10 in the rear but still wanted it to be able to get good milage on the interstate. My buddy has a 01 TA and its running 4.10 gears with the T56 and he still gets good milage and it just hauls at the stop lights. Anyways, wondering if any of u guys have put a T56 through our engines? If so what problems did u come up against, if it was harder than the T5 swap, and if u had to get any special parts for it to fit and work. Thanks for the help

 

There is nothing specifically different about the LO3, you'll need to get an LT1 based t56 as the LS1 version is quite a bit different. With the LT1 trans you'll need a different crossmember, but I believe the driveshaft will still work. You'll also need a converter box to run the 8000 pulse per mile speed sensor with your ecm and dash that is expecting 4000 ppm. I believe there is a tech article addressing these issues.

 

I'd also add that if you're not going to get a crazy high horsepower engine any time soon, I would just swap in a T5 that will fit very easily and cost MUCH less. I love mine, and it's standing up to my engine just fine as well as being great on the highway.

 

yeah i was thinking about the t5 because of the cost but i am gonna go to an ls1 once my suspension and put the fourth gen interior in, so i figured i dont want to get a t5 then have to upgrade again. Really only feel like one tranny swap

 

An LS1 T56 won't bolt up to your 305.

 

It will need a lot of custom stuff to do that. Either stay away from LS stuff, or do the two swaps at the same time.

Find a power and tranny out of a 98 or something and toss it all in at the same time. Doing a T-56 now and then doing the LS later is a recipea for disaster. Tons of $ wasted. Just keep the auto till you wanna get the LS motor.