We run a torque converter from an I6 4.2L from a trailblazer. Its a direct swap
The small block generation 4l60e has a 298mm input shaft when the LS 4l60e has a 300mm input shaft
I didn't know the I6 torque converter also worked on those transmissions, but forgot they also got the 4L60e...
Agree on the 298 vs 300 mm input shaft. The 300 mm shaft version from the 99+ 4L60e dealt away from the V6 vs V8 internal differences from what I gathered, at least in the Silverados, they are all the same. The torque converter was supposed to be better, along with the friction material and I can't remember what else.
My 99 NBS ECSB 4.3 had the LS-style 4L60e. The transmission had the 12 o'clock bell housing bolt hole, the 4.3 did not have a bolt hole there.
I wonder what 4L60e transmission setup was mated to the late 5.7 Vortec in the Express vans that went up to 2002? Probably the same?
I believe LS style transmission requires some special flywheel to mate to the SBC?
Well, it doesn't matter. It seems like OP already has a tranny ready to go...