I just joined so Im new to this forum. I do have a 67 convertible camaro origianlly with a 6cy. and a 50" driveline on a PG. I removed the PG and engine for a TH400 and a 454.
The driveline fit but it has NO room for movement.
The Th400 has 31 splines i believe.
I need approx 1/2 to 3/4 inch more room.
Im going to order it from "Inland Empire Driveline" and go pick it up as i live in OC.
They have a website with all the pertinent info to order a correct one. Looks like they come with 1310 Spicers.
FRom what I gather, the big block sits back a little and thus I need a shorter driveline.
I will ask the guys tomorrow and just order it new, as I dont want any problems from not having enough room for movement, however, I do believe the original big block 49.5" would have worked.
The one I currently have is 50" from center of U-joints.
This forum helped me get my measurements correct.