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1972 diff rebuild



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vetteboy72

Club Member

Mon 05 Mar 18 17:16

1972 diff rebuild


Now starting the diff rebuild on my 72 small block C3. It's stripped down and the left hand yoke has worn down to the retaining c clip. The posi clutches don't appear to be worn much.
I'm getting a new bearing and seal kit, but want to know where is the best place to buy the yokes from. Looked on all the usual sites and cost and possibly quality varies drastically!
Should you renew both yokes and the clutches? With this option the cost adds up to more than recon unit!
Some yokes are reconditioned and say have hardened steel inserts in end to stop wear, are these better or worse than new (chinese) yokes?
Which components actually wear causing the end of yoke to wear down on centre pin?
Thanks Paul.

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kentvette

Club Member

Mon 05 Mar 18 19:35

Re: 1972 diff rebuild


Paul, have a word with Scott at Corvette Kingdom. Or, drop Gary Ramardi (GTR1999 on this forum) a PM. Gary is US based and is considered the "guru" on diffs and rear wheel bearings etc. He can almost certainly point you the direction of a suitable supplier, unless Scott can sort you out.

It is the actual yoke end that wears, apparently due to an issue with case hardening on certain units, usually year specific. In effect, the yoke end takes the weight of the car's rear, as the driveshaft is the top link of the suspension.

Based on my experience, a rebuilt unit is probably cheaper than replacing all the "innards" of yours. Rolling Eyes


--------------------
Stephen J Irons
CCCUK Lifetime Member
Corvette Club France
Corvettes of Southern California
NCM Family Member
Stephen & June's Web Site
Red Corvettes Have More Fun!

Apple IS Genisys!
The "Born-Again Greenies" are killing the planet! It's time to wake up and smell the rain-forest burning!

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vetteboy72

Club Member

Tue 06 Mar 18 16:46

Re: 1972 diff rebuild


Thanks, just seen gtr 1999 on another forum and he mentioned diffs so could be good to try!

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Vetteheadtony

Club Member

Sun 11 Mar 18 14:22

Re: 1972 diff rebuild


vetteboy72 wrote (View Post):Now starting the diff rebuild on my 72 small block C3. It's stripped down and the left hand yoke has worn down to the retaining c clip. The posi clutches don't appear to be worn much.
I'm getting a new bearing and seal kit, but want to know where is the best place to buy the yokes from. Looked on all the usual sites and cost and possibly quality varies drastically!
Should you renew both yokes and the clutches? With this option the cost adds up to more than recon unit!
Some yokes are reconditioned and say have hardened steel inserts in end to stop wear, are these better or worse than new (chinese) yokes?
Which components actually wear causing the end of yoke to wear down on centre pin?
Thanks Paul.

I have a pair of really good yokes if you need them
Tony 07816878892



Last edited by Vetteheadtony on Sun 11 Mar 18 14:24; edited 1 time in total. [3 %]
--------------------
Vetteheadtony
2004 Z06 lemans edition pro charged
613 BHP
Black C6 ZR1 wheels
FECKING FAST!!!

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vetteboy72

Club Member

Sun 11 Mar 18 19:26

Re: 1972 diff rebuild


Very interested if they are the heavy duty type with cast end caps not U bolts.
Sent you text.

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sublimemike

Club Member

Mon 12 Mar 18 21:26

Re: 1972 diff rebuild


I also have a set of these hardened etc. Let me know if you are not fixed up

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vetteboy72

Club Member

Tue 13 Mar 18 09:08

Re: 1972 diff rebuild


PM sent

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