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#546383 06/13/2009 7:08 PM
Joined: Dec 2007
Posts: 79
T
'Bolter
'Bolter
T Offline
Joined: Dec 2007
Posts: 79
o.k. I haven't been drinking ,but I may start. What rear end gear ratio is this . I read a tech tip that said to turn the tire and count the turns to one turn of the drive shaft, now for the good stuff for one complete turn of the wheel the drive saft has made two turns. I have a 55 2nd series with a 265 looks like a 55 rear axel 10 bolt every thing looks like other 55 rear axel that I've seen. Can someone show me the light ? Thanks

Joined: Feb 2002
Posts: 12,029
F
Cruising in the Passing Lane
Cruising in the Passing Lane
F Offline
Joined: Feb 2002
Posts: 12,029
actually it's number of turns of the driveshaft for one turn of a wheel .... you need to have the other wheel blocked

the original ratio would be 3.90, or nearly 4 turns of the shaft for one turn of a wheel - if it had an OD trans it would be a 4.10, just over 4 turns of the shaft

Bill


Moved over to the Passing Lane

"When we tug a single thing in nature, we find it attached to the rest of the world" ~ John Muir
"When we tug a single thing on an old truck, we find it falls off" ~ me
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Joined: Feb 2004
Posts: 28,674
H
Kettle Custodian (pot stirrer)
Kettle Custodian (pot stirrer)
H Offline
Joined: Feb 2004
Posts: 28,674
With one wheel jacked up and the transmission in neutral, the driveshaft will turn twice as fast as normal when you turn the wheel. The spider and axle gears double the ring & pinion ratio. A more accurate way to check R&P ratio is to mark a spot on the tire, roll the vehicle straight forward exactly one turn of the wheel, and count the turns of the driveshaft. A 3.90:1 gearset will result in almost 4 turns of the driveshaft doing it that way.
Jerry


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