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Post Info TOPIC: Question: 61 Pontiac drive shaft (front)


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Question: 61 Pontiac drive shaft (front)


Can anyone easily tell me the stock length of the front portion of the drive shaft for a 61 Pontiac/Chev 261 auto (cast glide).

I swapped to an aluminum powerglide, more than one person measured twice, and we figured the front drive shaft needed to be shortened by 3 inches. Got it back from the shop, put it in and the slip yoke sticks out 2 inches. Trying to figure if it is incorrect measurement or driveline shop error.

Adam

 

 



-- Edited by rumrunner on Thursday 22nd of August 2013 04:15:19 PM

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rabbit64cs wrote:

slip should stick out some... it has to have free movement in and out.


 agreed but it should only be 3/4 to 1 inch and that what I measured (or thought I did) for.



-- Edited by rumrunner on Thursday 22nd of August 2013 03:09:42 PM

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slip should stick out some... it has to have free movement in and out.

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agreed ..that is excessive..

I can go out and measure a front drive shaft on the rack for you....

what year aluminum glide did you use?  course or fine spline?



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rabbit64cs wrote:

agreed ..that is excessive..

I can go out and measure a front drive shaft on the rack for you....

what year aluminum glide did you use?  course or fine spline?


 27 fine spline - came mated to a 350 and was in a 72 Nova.



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2drpost wrote:

'61 impala, installed a turbo 350 in place of a cast iron PG, shorten the frt shaft 3" worked fine


 That is what I thought as well, the drive shaft was going to be either the same size or need to be 3 inches shorter. I really should have written down the stock length before it was modified. I have a spare rear piece but not the front. So far no luck trying to find the length online.  



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25" center to center at the u joints on an old shaft I measured..  I believe that it had been shortened up? 



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rabbit64cs wrote:

25" center to center at the u joints on an old shaft I measured..  I believe that it had been shortened up? 


Thanks!

I am going to pull mine back out tonight and I will measure before I bring it back to the driveline shop tomorrow.



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that one I measured, for some reason I had to shorten it , even though I had it behind a PG,  but the PG was out of a 64 Beaumont ,  and had the longer tail shaft. ..I've read that up until 63 , there was the coarse spline output shaft ,and possibly different length???? 

as I'm typing this , I think I recall where another loose drive shaft is....



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I pulled the drive shaft back out and measured and its 24" center to center so that inch is exactly what I am out. This would lead me to derive that the stock length would be 28" center to center

 

image002.jpg



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great chart !



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yes im gonna save that!Rog has every 1 of those trannys i bet

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nope.. no 200or 200R4

 

wink



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me either got every one else though,even a few dual bolt patterns!

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yes i do belive there are two different lenghts the shorter one is much harder to find for it will work when you put in a tubro 350 thanks willy

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