Manual to automatic swap

[RKBJR]

I'm thinking about swapping my SM465 for a TH350. I've got a few questions about the swap. Currently I have an SM465 mated to a LoMax 205 t-case that is clocked up. I'm using the stock 465/205 adapter with an aftermarket clocking plate.

I have read that the length from the face of the bellhousing to the centerline of the t-case rear output is the same on an SM465/NP205 and a TH350/NP205. Can someone verify this? Also, is the location of the mount holes on the adapters of each in the same location? Trying to figure out if my current crossmember would need to be modified.

JB Conversions has an adapter for the t-case input shaft so I wouldn't need to change out the input shaft.

The main thing I'm trying to do is make this swap as easy as possible by having everything ready before hand. And I want to see if any driveshaft or crossmember modification is neccesary.

Is there anything I'm overlooking?

 

[Ridgerunner]

you could just measure bellhousing to yoke and bell housing to mount hole and ou should know

 

[DLOR]

my bro did a th350/205 combo swap to a sm465/205 in a 72 k5. he reused the crossmember and driveshafts without mods. the clutch linkage was the only hiccup, so going the other way shouldn't be that bad. not sure if the lomax and adapter length is an issue though.