Anyone know if a auto trans from a 94-97 LT1 can be used behind an LS1 if the appropriate torque converter is used?

 

If I'm not mistaken an LT1 has the standard SBC bolt pattern on the tranny/engine whereas the LS1 is a different bolt pattern.

 

I think the LS1 has the standard SBC bolt pattern for the trans, but I think the flywheel is different so you'll need the right converter. People use turbo 350 and 400's on their LS1's so in theory I'd say yes it will bolt up and work unless theres an electronic difference (connections, programing, etc.)