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Dual Range Question

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I was looking at the post in the marketplace about the dual range in an 81 Brat. Is the gear ratio different than in other Brats? I got the impression that the dual range from that year brat (81) seemed to be really good. Any help would be appreciated.

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It probably has the same ratios as the rest of the 81/82 DR 4 speeds. Which have a taller 3rd and 4th then the 83+ DR 4speeds

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Guest taprackready
It probably has the same ratios as the rest of the 81/82 DR 4 speeds. Which have a taller 3rd and 4th then the 83+ DR 4speeds

If it had a taller 4th gear then that would make it an overdrive transmission.

 

Bill

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81-82 dual ranges have the same gearing. The change came in 83. The fourth gear is longer 83+, I'm not too sure about any difference in 3rd. I've had several of both to compare.

 

 

If it had a taller 4th gear then that would make it an overdrive transmission.

:lol:

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Yeah - the 3rd and 4th gears in the 81/82 are shorter. Good for a lifted rig, since the big tires don't like high gearing. Otherwise they just get crappy gas mileage on a stock setup.

 

GD

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Guest taprackready
Yeah - the 3rd and 4th gears in the 81/82 are shorter. Good for a lifted rig, since the big tires don't like high gearing. Otherwise they just get crappy gas mileage on a stock setup.

 

GD

So fourth gear is not 1:1 ratio?

 

Bill

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Actually - it's *over* 1:1, so 4th IS overdrive. The ratio of the 81/82 4th gear is like .942, where the ratio of the 83+ 4th is like .885.....

 

3rd gear is something like 1.344, and 1.266 respectively.

 

Look at his chart ^ it's better than my memory :-p

 

What I don't get about that chart, is it seems like 82 4WD wagon's didn't exist..... which they did.... for sure. Heh. Weird

 

GD

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