driveshaft

[dusterboy15]

i need a drive shaft for a b body 8 3/4 and a 904 trans for m Duster  ASAP

[physixx]

Would you happen to know what the U-joint center to center dimension is? I have one that may work.

Ken
Edison, NJ
rider1454@aol.com

[dusterboy15]

umm how or were do i find that? I dont really know its the stock setup ill try to find it

[dusterboy15]

I also need the shock plates for a 8 3/4 and what ever else is needed to install

[physixx]

The best way to measure it would be to jack the car up and support it by the rear axle. Put a yoke in the trans all the way in, then pull it out about 1 1/2". Measure from the back end of the hole in the yoke where the U-joint goes to the back end of the saddle of the rear end yoke where the U-joint sits. The would give you a pretty good idea of the length of the driveshaft that you need.

Ken

[dusterboy15]

its either 6.80 or 7.30 i think since thats what mopar sells im not sure really i believe its a 741 case

[dusterboy15]

well i know there was 904 trans cars with 8 3/4 rears so i was jsut looking for one that would bolt up

[physixx]

The driveshaft that I have measures 3" in diameter and 49" from the center of the front U-joint to center of the rear U-joint and uses the small U-joint consistent with the slip yoke used on the 904 trans.

Ken

[NYrr496]

Oh... I thought you meant the band from the show Lost.     

[physixx]

Dusterboy15, your mailbox is full. It looks like the one that I have will work. What happened to the one that's in the car now?

[dusterboy15]

its for a 8 1/4 the one i need is for a 8 3/4

[physixx]

Well, if the one that you need measures 49", has the small U-joints and is 3" in diameter, this should work. You can use your transmission slip yoke with some new U-joints then you'll be good to go. I'd like to get $75 plus the shipping for this driveshaft. Remember, I'm going with the information that you gave me on the dimensions so if you did the measuring correctly, this shaft will fit. If you made a mistake on the length, and it doesn't fit, I can't be responsible for that. I just wanted to get that straight.

Ken

[robx4406]

Here's a decent source for driveshaft lengths.  Looks like most of the info was pulled from the factory parts book.

http://www.autohobbydigest.com/tables.php?17_driveshafts_slip_yoke

According to this source a shaft 48.9 should work, so Ken's 49" shaft, that sounds real perverse...     , should work OK.

[dusterboy15]

hmm maybe i will try my shaft and see what happens but hold on to yours for me thanks

[meridian]

I may also have one that may work; it came out of a 72 dart 8-3/4 and 904 trans....where are you located?

[dusterboy15]

im in san jose CA 95127