08-16-2012, 10:13 AM
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Senior Club Cobra Member
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Join Date: Sep 2000
Location: Holderness, NH, US of A,
NH
Cobra Make, Engine: CSX 4772 old iron FE
Posts: 5,499
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Not Ranked
Axles are just specific by length for various models. Length can be changed if necessary and uprated at the same time. Ratio should be on one of two tags under the rear cover bolts. BPL is British Posi Lock which is preferable as it is limited slip. You can hold one axle still and try spinning the other by hand. If they have BPL it will try and spin the other side in the same direction. Ratio is given either as a number like 3.54 or the teeth numbers on pinion and crown wheel like 19/70 is 19 divided by 70 is 3.33 to 1.
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