how much longer and shorter do they need to be.

 

I can't remeber, I;ve got to go now, but I posted the lengths in here before if you want to start digging. Other wise I will masure them tomarro when I install the driveshaft safty loop.

 

ok i look and see what i can dig up then. thanks

 

Not that this answer will help you with specifics...but it is about 3". You aren't gonna want to take someone else's measurement on something like this. IMO the best way is to drop it on the ground and get those measurements once you have completed the swap...I am sur eyou've heard a million times...every truck is different...even the ones that are the same. LOL It's the same but different thing.

That # looks short Wilde. GM numbers are usually like 6 or 7 digits right? My invoice is at home otherwise I'd shoot it out there. Looks like FLT can help you out anyways. Good luck with the swap!

 

The part# I have here is 12386258

Chuck

 

Thats a GM PN#? May be cheaper if I get a friend with the employee discount to buy it for me than through speed engineering.

 

can the driveshafts from a 2500(from 3/4 ton ecsb to 1/2ton ecsb) be swapped over in a 4L80 conversion, eliminating the need for custom lengths? thanks for the part number too, chuck

 

i'm thinking no becouse of the different rear ends but don't quote me on it.

 

Not quite sure about that one, Try giving shawn a call at Speed Engineering for some info, I know he has all the details for the swap.

Chuck

 

Rear drive shaft is 66 1/2" long I masured from center of u-joint to center of u- joint.

I feel pretty good about these numbers, because of this post. Click to see
If I can come-up with the same masurement two different times............................