Ok guys. I have consulted the official "GMC Maintenance Manual".
I am at work and dont have a scanner, or I'd push the images to you. . sorry.
However, here is the scoop:
In the manual, in the "Propeller Shafts" section, it shows two scenario's.
1. 101-22 (short bed)
2. 102-22 (long bed)
Even though my vin reads 102-22, it appears I may have the setup of 101-22. I have no idea why that is, may be a year change somewhere in there.
The difference between the two is a secondary shaft used in a tubular housing between the main drive shaft and the transmission. I think this is the unit that is about 18" in length, not sure. The front and rear shafts are connected through a univ. joint. Each connection is in a ball type housing.
TTTtttBB---BB-------ddDDD (102-22)
TTTtttBBBB------ddDD (101-22)
If this makes sense: The big t's are the big part of the tranny, then smaller t's are the smaller part of tranny, the BB's are the bell type housing for the joints. The d's for differential.
And the ---are the shafts.
On my setup, the backend of my transmission is 1/2 of the ball housing with the female end loose within.
(TTTtttB)unbolts here(B---BB--------ddDD)
When I unbolt the housing, and take out the tranny I am left with the other 1/2 of the housing and a male end hanging loosely.
Am I going to need this "adapter" as spoken of above? Never heard of it? What do I need to look for at the salvage yard as far as 4-speeds go? Should I take my 3-speed out there and compare the female end of the housing?
I hate to sound so oblivious here, but this is quite confusing to the virgin restorer.
Ideas on the logistics of this swap?
Thanks fellas...
Dallas
