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Old 06-02-2008, 10:29 PM
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help with rear ratio

the car is a 1956 Bel Air original V8 powerglide car and should have a 3.55 rear gear. when I turn the tire one revolution the yoke only makes 1 3/4 turns. shouldn't it make 3 1/2 turns for a 3.55 ratio?

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Old 06-03-2008, 03:02 AM
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Quote:
Originally Posted by 71corvette
the car is a 1956 Bel Air original V8 powerglide car and should have a 3.55 rear gear. when I turn the tire one revolution the yoke only makes 1 3/4 turns. shouldn't it make 3 1/2 turns for a 3.55 ratio?
Try it this way. Mark the driveshaft with chalk and the tire. Turn the driveshaft 1 revolution and count the tire revs.
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Old 06-03-2008, 04:40 AM
F&J F&J is offline
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Quote:
Originally Posted by 71corvette
the car is a 1956 Bel Air original V8 powerglide car and should have a 3.55 rear gear. when I turn the tire one revolution the yoke only makes 1 3/4 turns. shouldn't it make 3 1/2 turns for a 3.55 ratio?
The correct way on a non-posi rear is to turn the wheel 2 exact turns while the other tire is not moving.


So, 2 X 1.75 = 3.50 ratio.



If it was a posi, then just one turn of the wheel(s)
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Old 06-03-2008, 05:11 AM
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Quote:
Originally Posted by F&J
The correct way on a non-posi rear is to turn the wheel 2 exact turns while the other tire is not moving.


So, 2 X 1.75 = 3.50 ratio.



If it was a posi, then just one turn of the wheel(s)
thanks, I thought something was not right here
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