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289Galaxie 02-18-2018 08:12 AM

Need help with yoke identification
 
5 Attachment(s)
I posted this on the Galaxie Forum and it was suggested that someone here might be able to help me.

I have a '67 Galaxie with a light duty WER axle that I wanted to change over to a 9". I bought 31 spline axles and a housing that came out of a '68 Galaxie with a 390 and a differential that came out of what I'm told was a Thunderbird. I was also told it was a 9" so I bought it sight unseen on-line. It turns out that this differential is actually a 9-3/8" and not a 9".

I want to remove the existing flange and change it to a regular style yoke. The markings on the pinion support are C8AWA and 8F21. I don't know if this is considered a standard pinion support or a Daytona pinion support so I have no idea what yoke to order. Can anyone tell me what I need by either the numbers that are cast into it or by the pics?

I know most people would tell me to get rid of it and get a 9" but I'm only into it for about $100.00 plus whatever a yoke will cost.

Thanks for any help you can give me.

RAGGAREN 02-18-2018 10:48 AM

Re: Need help with yoke identification
 
in my opinion it will be way simpler/cheaper and safer to change to and use matching part/piece on drive shaft...
that way you dont mess up bearing preload and backlash on 3rd member..

289Galaxie 02-18-2018 11:44 AM

Re: Need help with yoke identification
 
Quote:

Originally Posted by RAGGAREN (Post 1629547322)
in my opinion it will be way simpler/cheaper and safer to change to and use matching part/piece on drive shaft...
that way you dont mess up bearing preload and backlash on 3rd member..

Boy, I see you all over the place!

Are you saying that I should find a yoke that bolts to that round flange on the diff as long as it matches the size of the u-joint on the driveshaft? My thought was to replace that flange with a regular yoke, whether it's a standard or daytona I don't know. I didn't know that I could potentially mess things up, I thought I'd just exchange them and away I'd go.

This is all new to me and maybe I'm making it far more complicated than it should be.

RAGGAREN 02-18-2018 02:26 PM

Re: Need help with yoke identification
 
Quote:

Originally Posted by 289Galaxie (Post 1629547362)

Are you saying that I should find a yoke that bolts to that round flange on the diff as long as it matches the size of the u-joint on the driveshaft?

yes...
because the odds is that you will over/under torque nut ....mess up crush sleeve
let say that if you where only to replace oil seal..no problem
then you just mark nut and yoke, count turns while removing nut..
then when installing same amount of turns ..
on final turn, land exactly on mark on yoke and not going past.....


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