Hi Tom,
A single wheel turns 2X faster then both
wheels, and you need more turns for better
accuracy.
1. Jack up one wheel.
2. Chalk mark the wheel and the ground.
3. Have a friend turn it 20 revolutions
while you count driveshaft rotations.
4. Go slow on the final wheel rotation.
If you get 45.6 that is a 4.56:1 ratio.
41.1 is 4.11. Easy!
Your 2.25 may be 4.56.
Good luck!
Dennis
1953 3100, 1935 Plymouth Coupe
--- In old-chevy-truck@yahoogroups.com, "Tom Johnston" <johnstn@...> wrote:
>
> Hi truckers
> Trying to figure out the rear end ratio on my 46 3/4 ton. I read an article
> on the web which says to jack up the rearend (both wheels) and turn one
> wheel a complete revolution while counting the revolutions of the drive
> shaft. I did just that and my drive shaft turns a little more that 2 1/4
> turns ( the other wheel does not turn). Is this procedure correct? If so it
> does not make sense. My axle ratio could not possibly be 2.25 (or so) : 1. I
> thought it would be closer to 4 or 5 to 1. Any thoughts?
> Tom
>
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