What bastard u-joint do i need?

[Mater/10]

i recently installed my 69-70 12 bolt 3.08 in my 64'. the truck had a 70's-80's 10 bolt in it. How can i find out the size of the bastard joint? so i can hook up the newer smaller drive shaft up to the older rear end

[padresag]

you just have to know the sizes and get the conversion joint that meets the measurements.
width of the joint, diameter of the cup and inside or outside clips.
ron

[dragnframe]

Give me cap diameters and also need to know if grooved or just a plain cap. Looking it up by application, 60-81 all take a precision 369 joint and mid 80's is a 534g. This would make it a precision #372. Driveshaft side is 1.125" grooved and rear end side is 1.063" plain. Hope this helps

[Mater/10]

Thanks guys I Appreciate it! and yes sir it Helps im gonna get the measurements when i get home!

[sigshooter]

Agree 372

[Tx Firefighter]

My local parts store stocks them and they're not expensive at all.

[tincan1966]

That's the same one I used to put my TH350C/700R front yoke on my original drive shaft.

[Mater/10]

Sounds like the 372 is what im needing . so 372 is what ill get I Appreciate it guys!

[grs]

Originally Posted by Tx Firefighter

My local parts store stocks them and they're not expensive at all.

Would a 350, and 400 yoke be the same ? I have a brand new drive shaft out of my sons 69. It had a 400 trans in it.

[Tx Firefighter]

No sir. Th350 and Th400 yokes are different.

[grs]

Originally Posted by Tx Firefighter

No sir. Th350 and Th400 yokes are different.

Thanks

[LostMy65]

I found a driveline from a 60's impala the exact length I need, so the worse case scenario is I'll need conversion u-joint?

[jonzcustomshop]

I had the same thing in my crew cab build, and needed a big to little U joint-
post # 270
http://67-72chevytrucks.com/vboard/s...646830&page=11