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72BoB View Drop Down
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Direct Link To This Post Topic: Drive Shaft Length
    Posted: 09-August-2011 at 1:48AM
Does anyone out there know the stock driveshaft length of a 72 with a 429/C6 combo?
 
I'm trying to work out the logistics when I put the 472 in my car. I am switching from a 302/C6 combo, to the 472/C6, which will require a different length driveshaft. Unfortunately, the closest driveshaft place is 45 minutes away from me, and the shop would have had to charge me about $100 on top of the work to drop it off and pick it up from the place, so I figured I would do it myself.
 
With that being said, can I reasonably assume a stock length driveshaft would work for my application? I am using Crites mounts, and the rear end is in the stock location, so is a "custom" length driveshaft neccessary? 


Edited by 72BoB - 09-August-2011 at 1:50AM
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Direct Link To This Post Posted: 09-August-2011 at 2:52AM
Will it require a different driveshaft? If the 429 c6 has the same tailshaft length as the 302 c6, and the 429 c6 has the crossmember bolt to the frame in the same holes as the 302 c6... 

That having been said, I can't help, I have a long tailshaft C6 in my car. I called Denny's and sent them my measurements. 


Edited by Psquare75 - 09-August-2011 at 2:53AM
Paul
77 XR7 460/C6/3.00:1 *SOLD*
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Direct Link To This Post Posted: 09-August-2011 at 4:22AM
 When I did a engine trans swap, the cost to clean ,cut ,weld , paint, and  BALANCE ,  the drive shaft. was worth having the driveshaft shop do it. 
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Direct Link To This Post Posted: 09-August-2011 at 4:50AM
I can measure mine when I return home but I had to have the original drive shaft shortened by 3/4" which only cost $65.00.
I cannot confirm if this was because of the Crites mounts or not but without shortening it there was not enough free play to insall the shaft while on the ground causing concerns about bottoming out in the tranny.
If memory serves, the CJ and 429 driveshafts had a greater diameter than other engine/trans combos.
Have you tried using it as is? Might surprise you and  fit
Eric
72GTS-Ncode (429-477ci)



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Direct Link To This Post Posted: 09-August-2011 at 6:12AM
I have a 429/C6 combo in my 72 also but it is not original as my car was a Q code 351CJ. what measurements do you need, The tube length or from universal saddel to the other one.Not sure how they measure it. between my measurements an Eric might be able to figure it out.
His is an Original N code 429 but as he said he had it shortened. I believe mine is stock length and not sure if it is original shaft as I don't know if my car came with a C6 behind the Cleveland but they where a popular trans for the Clevelands back then.

Anyway let me know how you want it measured and I can measure mine too
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Direct Link To This Post Posted: 09-August-2011 at 8:07AM
I don't know the first thing about measuring driveshaft lengths... The only things I can remember is from watching Xtreme 4x4 on SPIKE.
 
I guess I will try and see if the stock one will work... And if it won't I'll just have to figure out if the shop can store my car for a couple days...
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Direct Link To This Post Posted: 11-August-2011 at 2:08AM
when I changed min from 351c/ c6 to a 460/c6 I was able to use my existing drive shaft. that was with factory motor mounts.
1972 Gran Torino Sport : 10.30 @ 131 mph NA
1991 mustang : 11.38 @ 123 mph sold 91 and bought a 67 mustang
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Direct Link To This Post Posted: 21-April-2012 at 9:06AM
Just wondering if someone ever took these measurements? I switched from 302/c4 to 429/c6 and changed the 8 inch over to a 9 inch and my drive-shaft was not the correct length. I think I need somewhere around 51-52 inches or so. What is the length of a 351c/c6 trans drive shaft?
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Direct Link To This Post Posted: 21-April-2012 at 9:28PM
Hmm. And here I was today looking at three different Torino drive shafts, wonder what cars they came off of.
Different yokes, different ODs, and a mix of 1310, 1330 and I want to say a 1340 joint.
I thought I had pictures of them but do not.

I can see some basic main things, change from a 1310 joint, to say a 1330 or 1340 joint.
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Direct Link To This Post Posted: 24-April-2012 at 8:10AM
How do you tell the difference between the different types of joints?
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Direct Link To This Post Posted: 25-April-2012 at 7:55AM
I am honestly vague about it. Heard different sized yokes referred to alot on different car shows.
Most common I hear is a "1350" which is larger than the 1310 which my 72 originally had on it.
I know my 79 150 uses 1350 joints.
Oddly enough, the 76 carrier I have in the GTS right now, I want to say is a 1330 ujoint, but I am fuzzy to be honest.
 
I have however run into issues making sure of the exact correct size on the ujoint.
Would suggest if replacing, take them in when you get the new parts to match up the caps.
 
Also, I do have three drive shafts I can lay out and measure if anyone needs some info for comparison.
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Direct Link To This Post Posted: 25-April-2012 at 8:31AM
Originally posted by Eliteman76 Eliteman76 wrote:

 
Also, I do have three drive shafts I can lay out and measure if anyone needs some info for comparison.

That would really be helpful, I am planning on going and getting one from the junk yard sometime in the near future but it would make it alot easier to know what engine/trans combo to look at.
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Direct Link To This Post Posted: 26-April-2012 at 2:04AM
Well, the engine should be going in the car soon, so I'll be able to let you all know how the stock driveshaft works in my car...
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Direct Link To This Post Posted: 26-April-2012 at 3:24AM
Paul
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78 XR7 523/C6/3.5:1
79 F100 460/TKO500/3.25:1
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Direct Link To This Post Posted: 29-April-2012 at 10:21AM
Originally posted by 73Torino 73Torino wrote:

Originally posted by Eliteman76 Eliteman76 wrote:

 
Also, I do have three drive shafts I can lay out and measure if anyone needs some info for comparison.

That would really be helpful, I am planning on going and getting one from the junk yard sometime in the near future but it would make it alot easier to know what engine/trans combo to look at.
 
 
Tell you what, there is supposed to be a car show coming up in Independance, IA that looks like it could be fun, I'll bring you all three to check out if you are not in a rush.
 
Andrew
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Direct Link To This Post Posted: 29-April-2012 at 11:51AM
I finally got a chance to measure the factory drive shaft I have. it is 53 1/4 inches  center of  joint to center of joint. mine has 1330 joints in it and it is out of 351 cj c-6 trans car. I used it when I put the first 460 and c-6 in too.

Steve
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Direct Link To This Post Posted: 29-April-2012 at 11:59AM
Originally posted by Eliteman76 Eliteman76 wrote:

Originally posted by 73Torino 73Torino wrote:

Originally posted by Eliteman76 Eliteman76 wrote:

 
Also, I do have three drive shafts I can lay out and measure if anyone needs some info for comparison.

That would really be helpful, I am planning on going and getting one from the junk yard sometime in the near future but it would make it alot easier to know what engine/trans combo to look at.
 
 
Tell you what, there is supposed to be a car show coming up in Independance, IA that looks like it could be fun, I'll bring you all three to check out if you are not in a rush.
 
Andrew



when is the car show in independance I could cruise out there in the mustang.
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Direct Link To This Post Posted: 29-April-2012 at 1:20PM
You should be able to use the drive shaft out of any 2 door 429/460 351M/400 C6 car from the following list: 72-76 torino,montego 74-76 elite,montego,cougar. 400/351M 2 door again: 77-79 T-bird, cougar, LTD II. all of these cars sit on the same platform and wheel base size . The 4 door and the ranchero are longer so the driveshafts would need to be cut on those. Hope that this will help take care Dan
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Direct Link To This Post Posted: 29-April-2012 at 3:58PM

[/QUOTE]
 
Originally posted by Eliteman76 Eliteman76 wrote:

 
Tell you what, there is supposed to be a car show coming up in Independance, IA that looks like it could be fun, I'll bring you all three to check out if you are not in a rush.
 
Andrew



Depending on when it is. Even if I get the driveshaft thing figured out by then I would still want to go.Thumbs Up

As for the length of the driveshaft, I dont know if I have the long tailshaft for the c6 as it is out of a 69 Grand Marquis so that might be throwing my measurments off. I measured and it seemed like I needed one around 51-52 inches.


Edited by 73Torino - 29-April-2012 at 4:00PM
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Direct Link To This Post Posted: 08-May-2012 at 4:09PM
Show is June 2nd, I figured I could bring them with me. Sitting taking up space and I don't need them any more.
Here is the link:
Andrew
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Direct Link To This Post Posted: 15-May-2012 at 6:23AM
Feel free to slap me with a brick if you see me. I had those drive shafts sitting out the other night. And forgot to measure while digging for stuff. *sigh* old age and CRS sysndrome {can't remember S**T}
 
 
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Direct Link To This Post Posted: 20-May-2012 at 3:45PM
Andy if you do decide to go to Independence Ia for that show let me know. It is only 25 miles from me. 
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Direct Link To This Post Posted: 21-May-2012 at 7:20AM
OK, will do. As of right now, that is the plan, unless something does not pan out and we have to bail. Right now, just depends on finances but we are planning on going.
 
Otherwise, any of you guys go to Good Guys in Des Moines?
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Direct Link To This Post Posted: 30-May-2012 at 10:12AM
Guys...I am out this weekend. I have been fighting a severe sinus infection which has left me damn near bed ridden since thursday. I am just now gaining strength and not going to be able to handle a drive that far right now. This thing had kicked my ass and I've lost around 10 pounds in the last week.

Would like to drive and meet up for a good guys show in July in Des Moines if possible, but PM me or probably should start a new discussion under the Events section.

Andrew
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Direct Link To This Post Posted: 01-July-2012 at 6:45PM
OK, sorry for taking for ever on this guys. 

I finally got out in the shed today while I was cleaning.
I have three drive shafts.
Shortest to longest, it's a bit of a mystery but I'll do my best to detail.
  • Shorted shaft: tagged '72 montego. 3.5" OD. This shaft also has a large yoke, and is by far the longest yoke among the three I have had. The yoke's internal splines are pretty deep before they have any engagement. Yoke 1-7/8" OD Roughly 62.5" long. Unsure on joint, think it's a 1310.
  • {Additional note, I have not a clue where I got this shaft. I have only owned a single Montego, and it was a 73 parts car}.
  • Second shaft: Mystery car. I am assuming this came off a 1972 4 door Torino, 351c/c4 car. Small short yoke. 3" OD. Yoke is under 1.5" Roughly 63.5" long. Unsure on joint, think it's a 1310.
  • Third shaft: 1973 Gran Torino Sport. 351c / FMX. 3.5" OD, large yoke, and internal splines run the length of the yoke. Yoke 1-7/8" OD. Right at 64.5" with yoke.

Shaft#1

Shaft #2

Shaft #3

If anyone sees these are similar to what you have and could use one, let me know.

Andrew
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