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Old 11-18-2007, 07:12 PM
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2.56:1 posi rear end?

HI
I have a 2.56 posi rear end in my 76 chevy, can I change the gear (pinion and ring) for a 3:70, keeping my original positrack?
Or I have to change it for and other?

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Old 11-18-2007, 07:17 PM
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If your differential is an 8.5" 10 bolt you'll have to use a ring gear spacer or thick ring gear. The 2.73 and lower carriers ( "lower" as in 3.08, 3.42, etc. ) don't need the spacer or thicker gear.
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