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Old 05-28-2011, 06:49 PM   #1
towersddg9
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12 bolt ?

Putting in a new ring/pinnion 3:73 motive and auburn posi new axle's, pulled out a 4:11 date was july 65, the new set has 30 spine vs the old around 20 or so you can see in the pic, my question is will a new 30 spine yoke work or did I get the wrong gear set Thanks
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Old 05-28-2011, 07:35 PM   #2
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Re: 12 bolt ?

Here are a few more pics of my resto, can't wait to roll
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Old 05-28-2011, 08:49 PM   #3
scotts62
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Re: 12 bolt ?

Looks like where the crush sleeve sets is that it is good just the splines are different, either get another yoke or send that back and tell them what you really needed.
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Old 05-28-2011, 09:16 PM   #4
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Re: 12 bolt ?

63 short fleet, 350/350, did my 63 12 bolt, installed an eaton possi ... had to change my pinion yoke to a 30 spline, axels also ... old ones were 17 spline. From what I understand early 12 bolts were 17 spline, changed to 30 in 65 I think?
Love the possi, hooks up hard!
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Old 05-28-2011, 11:24 PM   #5
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Re: 12 bolt ?

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Originally Posted by 6flee3 View Post
63 short fleet, 350/350, did my 63 12 bolt, installed an eaton possi ... had to change my pinion yoke to a 30 spline, axels also ... old ones were 17 spline. From what I understand early 12 bolts were 17 spline, changed to 30 in 65 I think?
Love the possi, hooks up hard!
Denny's driveshaft had a new 1310 30 spline with straps for $73, I guess my 65 got the left over 17 spline, the old axles were 30, the date on the pinion July 65 Thanks for the input
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Old 06-01-2011, 04:23 PM   #6
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Re: 12 bolt ?

Man, your build looks like mine!! I ran in to the same issue w/ my gear swap.. I just bought a new yoke from summit, was pretty reasonably priced and worked perfect..
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Old 06-02-2011, 12:23 AM   #7
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Re: 12 bolt ?

Off topic, but where did you pick up the center-bolt finned valve covers? I'm looking for a good set that'll go over my roller rockers.
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Old 06-02-2011, 07:11 PM   #8
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Re: 12 bolt ?

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Off topic, but where did you pick up the center-bolt finned valve covers? I'm looking for a good set that'll go over my roller rockers.
Ebay, I think I paid around 100
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Old 06-02-2011, 07:14 PM   #9
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Re: 12 bolt ?

Got my new axles, ron's machine (motive brand) $115 much better than stock
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Old 06-03-2011, 10:51 AM   #10
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Re: 12 bolt ?

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Off topic, but where did you pick up the center-bolt finned valve covers? I'm looking for a good set that'll go over my roller rockers.
http://motors.shop.ebay.com/i.html?_...5.l1513&_pgn=1 One guy on this page is selling them for $79.50 with $10 shipping. The best I saw. You have to remember they are probably the cheap China ones but then again not many aren't.
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Old 06-03-2011, 11:16 AM   #11
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Re: 12 bolt ?

Towers where you at in Texas?
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Old 06-03-2011, 04:59 PM   #12
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Re: 12 bolt ?

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Towers where you at in Texas?
Clyde I'm in Haslet near TMS
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