Maverick and Comet Forum Archives - Maverick/Comet Technical www.fordmaverick.com

#1 daydreamer driveshaft problems  
trying to swich from stock driveshaft(steel, C4) to a aluminum shaft from a fox body.
1st problem--stock driveshaft (2 1/4 dia) centre to centre on the joints is 46 1/2in.. Alum shaft centre to centre on the joints is 45 1/2in..Dia is 3.50-4in

2nd problem-- stock shaft has u-joints that are 3.25 wide across cups..Alum shaft has u-joints that are 3.620 across cups.. Cups are same size on both driveshafts. Both have clips on the outside of the cups.

3rd problem maybe---I think I can find a joint that has the rite measurements for stock yokes, mated to the alum shaft. Because the front yoke is smaller then the dia of the alum shaft, will this cause a problem. Also rear pinion yoke joints have the same conversion situation.

Possible solution. find a foxbody car, with C4 and 5litre motor:?:
Message created at 03/21/12 06:24 PM
#2 asellers Re:driveshaft problems  
You will need to get a conversion u-joint for the rear location. Shouldn't need to change the front transmission slide yoke.
Message created at 03/22/12 10:01 AM
#3 daydreamer Re:driveshaft problems  
Originally posted by asellers
You will need to get a conversion u-joint for the rear location. Shouldn't need to change the front transmission slide yoke.

thks allen. The alum shaft was from a TKO tranny. Diff front yoke. C4,AOD,T5 are the same yolk but not any others.
What about the 1in difference in lenght.Does the fox body yoke have splines all the way to the end of the yoke. remember the yoke should only be 1 in --1 1/2 in out of the rear tail shaft, with the fox shaft it would be 2 1/2in.:?:
Message created at 03/22/12 06:17 PM
#4 Fro Re:driveshaft problems  
Here is what I've found Ron, the conversion joint is Neapco 11-52844 which may cross to something else but I'm not sure, as for the 1" difference in length I think I would check the fit very close to see exactly how much clearance it had in the car, I havent had that problem cause my car has 9 inch rear with the longer pinion yoke.
Message created at 03/22/12 09:18 PM
#5 daydreamer Re:driveshaft problems  
Originally posted by Fro
Here is what I've found Ron, the conversion joint is Neapco 11-52844 which may cross to something else but I'm not sure, as for the 1" difference in length I think I would check the fit very close to see exactly how much clearance it had in the car, I havent had that problem cause my car has 9 inch rear with the longer pinion yoke.

thks Jeff for the info. This weekend I will measure the length of the internal splines on the yoke and hope I have 2" or more splined contact inside the yoke, with the output shaft.:thumbsup:
Message created at 03/24/12 06:16 AM
#6 Maxx Levell Re:driveshaft problems  
Hey Ron...I'm trying to remember the part number...maybe 1310 for a dana or spicer u-joint I had to get one myself when I switched to the 9". At least do a search for u-joint conversion chart or something like that. That's what I did, and it listed the measurements for each. If I remember correctly, Autozone had one in stock. I got mine from the driveline place that shortened my driveshaft, but they are available.
Message created at 03/24/12 04:24 PM
#7 darren Re:driveshaft problems  
Ron. Mine has that alum shaft in it. I didnt get a joint that fit the alum to my 8 inch but I did find that the alum shafts bearing caps fit perfectly on the stock 8 inch cross. So my car has one joint made from 2. I used the 8 inch cross and 2 caps at the diff. I used the alum shafts ujoint caps in the driveshaft. I stumbled on this since I had it on the hoist at work with a factory ujoint for the 8 inch on hand. Went to install it and found its too narrow for the alum shaft. As a fluke I tried the old caps off the alum shafts ujoint. They fit perfect so I measured them up. Had carquest drop me off a Fox ujoint and used 2 caps from it.
It was stuck on my hoist and I couldnt find info on a single joint to install. I just got lucky that this worked for me and got me home. I could really use a part number for future replacement though.
Message created at 03/24/12 08:51 PM
#8 daydreamer Re:driveshaft problems  
Originally posted by darren
Ron. Mine has that alum shaft in it. I didnt get a joint that fit the alum to my 8 inch but I did find that the alum shafts bearing caps fit perfectly on the stock 8 inch cross. So my car has one joint made from 2. I used the 8 inch cross and 2 caps at the diff. I used the alum shafts ujoint caps in the driveshaft. I stumbled on this since I had it on the hoist at work with a factory ujoint for the 8 inch on hand. Went to install it and found its too narrow for the alum shaft. As a fluke I tried the old caps off the alum shafts ujoint. They fit perfect so I measured them up. Had carquest drop me off a Fox ujoint and used 2 caps from it.
It was stuck on my hoist and I couldnt find info on a single joint to install. I just got lucky that this worked for me and got me home. I could really use a part number for future replacement though.
MAXX thats sounds rite

Thanks To all. Here is the info that I have found or been sent. The joint cups on both the alum shaft and my steel shaft are the same size
Ford Racing conversion joint---M-4635-A
Precision joint-With grease fitting-353(alum length on 1 side,8in on the other)
Neapco-11-52844--------------Missouri part #
My only concern is the fact that the stock,original yoke, for insertion into rear of tranny, will only have about 1in of spline contact with the spline on the output shaft.I measured the spline length on the inside of the yoke. 3 1/2in total from u-joint location. My yoke will have to sit about 2 1/2in outta the rear seal in the tail shaft, leaving only approx 1in contact between the 2 splines.Yoke and out-put shaft. I think not enough.
Might have too purchase yoke #M-4841-B from Ford racing if this yoke has splines the full lenght of the yoke.:thumbsup:
Message created at 03/25/12 06:16 AM
#9 derek5ocomet Re:driveshaft problems  

Might have too purchase yoke #M-4841-B from Ford racing if this yoke has splines the full lenght of the yoke.:thumbsup:

That was my next sugesstion Ron as long as the Ford racing yoke is overall longer
Message created at 03/29/12 11:13 PM