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By 312YBlock - 6 Years Ago
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How can I determine the axel ratio of my 1955 T-Bird? The axel shaft has - 03029A. 44-1 on it.
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By Vic Correnti - 6 Years Ago
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Rotate a tire and count the number of drive shaft revolutions.
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By paul2748 - 6 Years Ago
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You might already know, but the ratios for 55 Birds are as follows:
3 speed 3.73 (410 optional?)
3 speed O/D 3.92
Automatic 3.31
If you have an open (non-posi) rear, then mark the
yoke and ONE tire (keep the other tire from
rotating) and turn the ONE tire two full turns while
counting the revolutions the yoke rotates-this is
your ratio
Simply put, positraction, you turn both tires one full turn, non positraction, turn one tire two full turns.
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