I have an opportunity to purchase a built T56 but can’t really identify it. It has a long input shaft like an LS but a 31 spline output shaft. The shifter position is TR6060 like but the front cover is not. I can’t find anything on the bellhousing. It’s weird too? Any help?

 

Looks just like a T56 from an Fbody car to me only with an aftermarket SFI bell but the belhousing looks to be installed incorrectly due to the starter location in relationship to the transmission mount. Looks like that bell was desinged for the starter to be on either side?

 

Maybe an LT1 T-56? It definitely has an F-body tailshaft because it has the holes for the torque arm mount. Are you sure it's 31 splines and not 30? Viper output shafts are 30 spline and are a common upgrade.

 

Aftermarket Ford T56 (not Magnum). Borg Warner made a GM version and a Ford version as "replace the T5" fitment (not exactly plug and play on the GM unit; I don't recall what the Ford unit required. )

 

The owner said it’s 31. I’m on my IPad and the picture is too small to count. I’ll check on my home computer.

 

The bellhousing starter mount threw me off too including the three bolt holes surrounding the starter nose.

 

I have a T56 Magnum from RPM Transmissions and the output shafts are originally 27 spline and the one they built for me is a 31 spline output shaft.