Gears

[tjsahara00]

Run the numbers to get the crawl ratio
automatic transmission has lower than
manuel transmission.

Maybe I'm not considering those fancy Atlas things...

[bjeep]

overall crawl ratio is lower is what I meant

I’m confused as to how?


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The converter in a auto makes the difference. Some say it is 7 to 1 by it's self.

[Big Dave]

overall crawl ratio is lower is what I meant

I’m confused as to how?


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The converter in a auto makes the difference. Some say it is 7 to 1 by it's self.

Thank you for the clarity. I always knew a auto was easier on parts because it had less shock load.

[Mortalis5509]

Torque converter will also play into the crawl ratio some. Using gears in the 6.xx range and lower will kill you for wheel speed unless you can turn 10k rpm's. In the east coast, sometimes you will need wheel speed and that low crawl ratio will not get you there.

What size tires are you running again? 5.13' to 5.38's will probably be what you need.

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[tcdawg]

Remember that automatics numbers are lower

Not my 42rle. That POS has like a 2.8:1 first gear vs. 4.0 in the manual from the same year

1st gear in my 6L80 is 4.03:1

[Mortalis5509]

Remember that automatics numbers are lower

Not my 42rle. That POS has like a 2.8:1 first gear vs. 4.0 in the manual from the same year

1st gear in my 6L80 is 4.03:1

What gears do you have in the axle?

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[Anvilsam]

Run the numbers to get the crawl ratio
automatic transmission has lower than
manuel transmission.

Maybe I'm not considering those fancy Atlas things...

Are you considering the actual gear ratio also? With both first gears being the same i just don't see how this works.

[TravisMac]

Remember that automatics numbers are lower

Not my 42rle. That POS has like a 2.8:1 first gear vs. 4.0 in the manual from the same year

1st gear in my 6L80 is 4.03:1

What gears do you have in the axle?

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5.38


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[Mortalis5509]

Remember that automatics numbers are lower

Not my 42rle. That POS has like a 2.8:1 first gear vs. 4.0 in the manual from the same year

1st gear in my 6L80 is 4.03:1

What gears do you have in the axle?

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5.38


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I meant for the 6l80?

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[tjsahara00]

Run the numbers to get the crawl ratio
automatic transmission has lower than
manuel transmission.

Maybe I'm not considering those fancy Atlas things...

Are you considering the actual gear ratio also? With both first gears being the same i just don't see how this works.

Good Lord I don't even wheel anymore...
Every time I went and figured my crawl ratio in my TJ using the formula on the internet it was half of what alot of the other guys had. I read where some said to practically double the crawl ratio in a automatic to get a more equalizing numberif what others with stick's got.

[clark123456]

Run the numbers to get the crawl ratio
automatic transmission has lower than
manuel transmission.

Maybe I'm not considering those fancy Atlas things...

Are you considering the actual gear ratio also? With both first gears being the same i just don't see how this works.

Good Lord I don't even wheel anymore...
Every time I went and figured my crawl ratio in my TJ using the formula on the internet it was half of what alot of the other guys had. I read where some said to practically double the crawl ratio in a automatic to get a more equalizing numberif what others with stick's got.

If I slip my clutch, does that double my ratio?

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[tjsahara00]