Many of the early 7 1/4 rears had the ratio info. stamped onto the center housing.
After so many years, it is good to double check by "counting the turns".
DD
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| Author: | Nino [ Wed Jun 27, 2007 4:33 pm ] |
| Post subject: | Gear ID's |
Is there a way to identify gear ratios in rear ends (71/4's) without dismantling? And what do I look for in the way of donor cars for my 66' Valiant. I would like to find a 3:23 or 3:55 set. Thanks, |
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| Author: | sethmcneil [ Wed Jun 27, 2007 7:52 pm ] |
| Post subject: | |
have you been under your car yet? take a wire brush with you, and look for a small tag under one of the bolts holding the cover in place |
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| Author: | dakight [ Wed Jun 27, 2007 8:24 pm ] |
| Post subject: | |
Here is the method Dan posted a little over a year ago in reply to me: Quote: Chalk the inboard sidewall of the tire that'll turn and block the other tire (or don't lift it up) so that it can't turn even a little bit. Turn the marked tire through two full revolutions and count quarter-turns of the driveshaft by watching the rear U-joint caps as the come to face the pavement. Divide the number of quarter-turns by four to get your ratio.
16/4 = 4 = 3.91 14/4 = 3-1/2 = 3.54 or 3.55 13/4 = 3-1/4 = 3.21 or 3.23 12/4 = 3 = 2.93 or 2.94 11/4 = 2-3/4 = 2.71 or 2.76 10/4 = 2-1/2 = 2.45 9/4 = 2-1/4 = 2.26 |
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| Author: | Doc [ Fri Jun 29, 2007 8:57 am ] |
| Post subject: | |
Many of the early 7 1/4 rears had the ratio info. stamped onto the center housing. After so many years, it is good to double check by "counting the turns". DD
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| Author: | dakight [ Fri Jun 29, 2007 10:01 am ] |
| Post subject: | |
And that was your reply to me in the same thread. 
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