T56 differences. Is there any?

[Built6spdMCSS]

I have looked up if there were any differences and really the only thing I am seeing is input and output shafte spline counts.

Both are 26 spline, the LS1 Fbody shaft is longer.

 

[roger1]

They are rated by torque not horsepower.

Borg-Warner T-56 transmission - Wikipedia

en.wikipedia.org

I have a T56 Magnum in my '55 Bel Air. It's the wide ratio version. They've recently released a version of wide ratio with a little different ratios. The T56 Magnum is rated at 700 ft.lbs.

 

[Built6spdMCSS]

Which is funny they say that because if you take the Fbody (adding in a Viper 2nd Gear), Corvette, or GTO T56, Shim the shafts to zero lash, and add the "Stage 2" Kit they are supposed to handle 750hp/tq.
The magnum has wider gears so that def helps.

 

[roger1]

Which is funny they say that because if you take the Fbody (adding in a Viper 2nd Gear), Corvette, or GTO T56, Shim the shafts to zero lash, and add the "Stage 2" Kit they are supposed to handle 750hp/tq.
The magnum has wider gears so that def helps.

I really like the 2.97 first mine has in my Bel Air with 3.55 gears. I like the .50 6th too for a highway cruising gear for great mileage.
The newer Magnum wide keeps the 2.97 first but changes 6th to .63.
The close Magnum has similar gearing to the f body T56. 2.66 first and .63 6th.

 

[88 Gutlass]

I had a 96 t56 behind my 465h 500lbs 386 LT1 running 10’s Dumping the clutch a 6k on full slicks with no issues

 

[Built6spdMCSS]

I really like the 2.97 first mine has in my Bel Air with 3.55 gears. I like the .50 6th too for a highway cruising gear for great mileage.
The newer Magnum wide keeps the 2.97 first but changes 6th to .63.
The close Magnum has similar gearing to the f body T56. 2.66 first and .63 6th.

The Fbody has the 2.66 1st but with the .50 6th. You can change whatever you wanted though in 5&6 as long as you have the right parts