Th400 to 12bolt 5lug driveshaft options

[Kolt88]

Hi everyone ive got a 1983 swb c10 with a th400 and a 12 bolt 5 lug rearend, ive been looking but haven't found an easy route without going to a driveshaft shop but i just bought my truck and the only thing it needs is a drive shaft. Im wanting to go from a bolt on yoke to a slip on.

 

[Charlie]

 

[twinturbo427]

If you were closer i woukd trade you the slip yoke pieces for the bolt on stuff.
If you are doing a one piece driveshaft, get one from a 1970s GM full size car and have it shortened. I got mine from a 76 caddy and had it shortened. Be careful, the TH375 has a th400 pan but the output is th350 sized.
You can always swap on a th400 slip yoke to the driveshaft if you cant find a th400 car.
One of the other members will have to chime in about the possible leak from using a slip yoke to bolt-on shaft, as I do not have that experience.

Welcome!

 

[twinturbo427]

Check this out:
http://www.dennysdriveshaft.com/app/webroot/img/File/how_to_measure_diagrams/b.html

You must be registered for see images attach

 

[Kolt88]

Hey thanks guys, i appreciate the help and not flaming.

 

[Dougnsalem]

Hey thanks guys, i appreciate the help and not flaming.

This isn't a flame. I'm just wondering how you made sure everything was good, without a driveline in it, to test drive it.

 

[Honky Kong jr]

If you were closer i woukd trade you the slip yoke pieces for the bolt on stuff.
If you are doing a one piece driveshaft, get one from a 1970s GM full size car and have it shortened. I got mine from a 76 caddy and had it shortened. Be careful, the TH375 has a th400 pan but the output is th350 sized.
You can always swap on a th400 slip yoke to the driveshaft if you cant find a th400 car.
One of the other members will have to chime in about the possible leak from using a slip yoke to bolt-on shaft, as I do not have that experience.

Welcome!

Muncie uses the same output spline. When I converted from fixed home to slip that what I used. I have a couple fixed yoke, yokes. That’s pretty much my go to transmission. People are scared of them and sell them cheap lol

 

[Kolt88]

Itll crank up and run fine the trans im taking in good faith that its good. The man i bought the truck from has drove it before and hes a pastor of a church and gave me his word its good so im hoping everything is fine. My grandpa always told me a **** only as good as his word and being 60 or so i imagine he lives by the same values. I did buy it as a project so worst come to worst ill have to get it rebuilt.