Why is my shop so reluctant to do a 10 bolt to 14 bolt swap?

[Caman96]

I’d be looking for a driveshaft from a LD 2500 or from a 1500 w/F44 package that goes with a 9.5 SF if your current driveshaft is bad.

 

[alpinecrick]

That's what the parts guy told me. He said that they're only agreeing to this swap bc I've been such a good customer who's put the time and effort into helping them with this truck before. I'm surprised that this is considered "custom" bc 14 bolt rear axles were an option on 1/2 tons and this axle is coming off another 1/2 ton.

The 14 bolt semi floater was not an "option" on the 1500's. They were originally called 2500's. We call them "Light Duty" 2500's. At some point there may have been a "Heavy Duty 1500" with the 14 bolt.

The emergency brake cable may have to be changed also.

 

[Caman96]

The 14 bolt semi floater was not an "option" on the 1500's. They were originally called 2500's. We call them "Light Duty" 2500's. At some point there may have been a "Heavy Duty 1500" with the 14 bolt.

The emergency brake cable may have to be changed also.

They were on 1500’s with F44 option. My buddies and my former 96 K1500’s both had 9.5 SF from factory.

 

[df2x4]

They were on 1500’s with F44 option. My buddies and my former 96 K1500’s both had 9.5 SF from factory.

Not sure if all the F44 1500s got them, but I'm pretty sure all the diesel 1500s did.

 

[Caman96]

I don’t know of any F44’s that didn’t come with a 9.5. Here’s my old 98 K1500 that did.

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And here’s a friend’s.

 

[someotherguy]

Not sure if all the F44 1500s got them, but I'm pretty sure all the diesel 1500s did.

F44 gas 1500's got 'em too. I parted a few.

OP, you'll want new u-bolts. I know this doesn't solve your u-joint problem, but you don't want to re-use u-bolts; they are TTY (torque-to-yield) so they stretch as you torque 'em down. They'll "seem" fine on re-use but they may not torque correctly the second go-round. Not something you want to risk.

Richard

 

[Caman96]

F44 gas 1500's got 'em too. I parted a few.

OP, you'll want new u-bolts. I know this doesn't solve your u-joint problem, but you don't want to re-use u-bolts; they are TTY (torque-to-yield) so they stretch as you torque 'em down. They'll "seem" fine on re-use but they may not torque correctly the second go-round. Not something you want to risk.

Richard

I was going to mention this too, but didn’t want to be “thatguy”, much information online that says otherwise. So I left it for @someotherguy.

 

[someotherguy]

I was going to mention this too, but didn’t want to be “thatguy”, much information online that says otherwise. So I left it for @someotherguy.

Hey; before I knew any better I re-used some (my old '92 when I rebuilt it mostly back to stock) and the truck went several years with no issues, until the transmission blew up and the new owner just left it sitting. No idea what eventually became of that truck. But as we learn new information, we have to adjust our approach accordingly..

Richard

 

[Caman96]

Hey; before I knew any better I re-used some (my old '92 when I rebuilt it mostly back to stock) and the truck went several years with no issues, until the transmission blew up and the new owner just left it sitting. No idea what eventually became of that truck. But as we learn new information, we have to adjust our approach accordingly..

Richard

I’m sure we’ve all done worse, I know I have. But after spending that much dough, why skimp?

 

[Erik the Awful]

I’m sure we’ve all done worse, I know I have. But after spending that much dough, why skimp?

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