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Discussion in 'The Garage' started by 85mudblazin, Jul 9, 2004.
What is the stock gear ratio in a 1985 front 10b??
Could be a number of ratios. Really depended on what was ordered or what came with certain drivetrain combinations. Most common are 3.08 , 3.42 , 3.73 , and also available were 4.10 's . /forums/images/graemlins/k5.gif
how do I find out what they are?? without taking off the cover?
Jack one tire off the ground, making sure that the other can't turn. Mark the yoke position relative to the diff, rotate the tire 2 times and count the number of times the pinion rotates. This should get you pretty close. /forums/images/graemlins/thumb.gif
2.73 3.28 3.42 3.73 4.10 You can look in your glovebox or innerfenderwell to some say it in there but it might not be right the PO may have swaped them.
Really though just pull the cover and divide the pinion and ring gear count clean it up a little RVT the cover back on and fill it up with fresh oil. Alot of people dont ever hadly change that gear oil and for the $10 it might cost you you should /forums/images/graemlins/thumb.gif
just looked in the glovebox and it said 3.08, well crap gotta get new gears.
With 35's you will need them definitely. I am in the same boat brother, at least yo have a 350, I just have smaller tires for now /forums/images/graemlins/k5.gif
yea I am about to buy a 14bff with 3.73 gears so I will have to upgrade anyways, I was thinking 4.88 gears since I am going to upgrade to 38's. /forums/images/graemlins/thumb.gif
If you are going to 38's with a 700R4 then just go to 5.13's. You will be happier then you would be with 4.88's.
will it make that much difference?? I thought 4.56 gears were good for 38's so I went with 4.88's to get more power but wouldnt 5.13's just rape my gas mileage?
Alot of people in these forums really don't care about gas mileage because they only use their rigs on the trail. Sometimes they don't necessarily give you the best opinion for what you are planning to use it for. I think that 4.88s are an excellent decision if you plan on running the street most the time. Not that people in here don't know what they are talkn about, but most like to play a differetn game /forums/images/graemlins/waytogo.gif
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