Aluminum driveshaft

[DuceAnAHalf]

I just picked up one today for $10 :2up: . Im going to replace the U-joints. Question is which U-joints do i need? Car is an 85 without the tow package. U-joint is out of either a 92+ P71 or a Aerostar. they use the same shaft. I will be using my front yoke and most likely me rear flange.

Scott, you put that 98 shaft in Nate''s car right?

[mrltd]

Think all the joints are the same, the flanges are different in some apps though.

[85crownHPP]

when captain wacky did his with a 90's shaft, he had to use special U joints and swap the box flang/transmission ends onto the new shaft.

[turbo2256b]

there are two different drive shafts. The big shaft came in the PI and tow package it has bigger u joints and flange at the rear. I t wont fit some rear flanges there too big. There are two other flanges on aluminum drive shafts but have the steel type u joints and can be swapped if the flanges dont fit.

[DuceAnAHalf]

I know about the flanges i need to know which PN U-joint to use. they list a different one for a 97 PI and a 85 non-tow.

[gadget73]

I thought there was some special adapter U joint used for doing this?

[DuceAnAHalf]

i got under the car today. it looks that the U-joints are the same. Im gonna get a set and try it. I need to install the driveshaft loop anyway.

[turbo2256b]

The real expensive u joints for the PI and tow package are probably the ones you dont want. They are a lot wider across the caps. Most aluminum shafts were for economy and use a bigger fllange at the rear but can be swapped with the steel shaft fllange your car came with.