Need driveshaft parts numbers or where to look please

[Dirtball]

The rear driveshaft in my 88 C3500 is slightly bent and vibrating. Not too bad, but bad enough that I want to replace it. Can I just replace the rear of the two piece shaft? Does it just slide off the spline coming out of the carrier? If I can just replace that one shaft, can someone please point me to a part number or place that has that. My searches on the internet are kind of confusing. I CAN buy the whole assembly, but I'd rather just buy the one shaft. A part number would be most helpful...

 

[someotherguy]

Why not take it out, and to a driveshaft shop to be balanced? Almost always cheaper than a brand new driveshaft. Take them the whole assembly.

Richard

 

[454cid]

If you just replace the rear half, it should get rebalance as an assembly in my opinion. They're balanced together when built.

I would either find an oem used shaft understanding it might need work, or take your original to a driveshaft shop as Richard suggested.

 

[Dirtball]

It's bent... not sure it can be balanced...

 

[someotherguy]

It's bent... not sure it can be balanced...

That same driveshaft shop can repair it. If it's a lost cause they'll have options.

I was in a 2009 3500HD that got totalled in a crash that tore the axle loose from the springs (broke the u-bolts) and snatched the driveshafts apart at the carrier bearing, leaving the rear portion to flop around on the differential, bending the yoke around the u-joint caps.

The people I worked for owned a body shop and repaired the truck, but failed to address the driveshaft correctly. So I did some looking around - a used driveshaft for that truck was almost $1K before shipping. I took it to the local driveshaft shop and they cut the yoke off, welded a new one on, installed 3 new u-joints and carrier bearing, and balanced the whole thing - for less than half what a used assembly cost.

Hey; it's worth asking 'em.

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Richard

 

[Erik the Awful]

A driveshaft shop can replace the bent driveshaft tube. I took a junkyard truck driveshaft, my Jaguar's driveshaft, and a measurement and asked for a driveshaft that would drop a TH400 into my XJ6. If I remember right it cost me about $150 out the door and it's good up to 600 hp.

 

[Dirtball]

Thanks for all of the replies... we have a fabulous shop here in the Birmingham, AL area. I will pull it and take it there. You are a wealth of info. I've never had to deal with driveshaft issues before.

 

[someotherguy]

Thanks for all of the replies... we have a fabulous shop here in the Birmingham, AL area. I will pull it and take it there. You are a wealth of info. I've never had to deal with driveshaft issues before.

Don't trust your parking brake; chock those wheels. And it helps if you can support the rear of the truck on jack stands, but still go ahead and put a drain pan under the transmission tailshaft housing. Some fluid can leak out when you remove the driveshaft.

Richard