84-85 Trucks & 4Runners 2nd gen pickups and 1st gen 4Runners with solid front axles

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Old 12-10-2014 | 04:41 PM
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yota21's Avatar
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Hi everyone I just got a 84 pickup 4x4 4cyl, and I was wondering how to tell what gear ratio it gas because there's no tags anywhere?!
Thanks
Old 12-10-2014 | 07:12 PM
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From: Enterprise, AL
1) Open dif: lift one tire and turn it one revolution. Count revolutions on drive shaft. Helps if you mark it.
Locked/welded dif: lift both tires.

2)Pull dif count teeth on ring gear and pinion.
Old 12-11-2014 | 02:20 AM
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From: Anderson Missouri
If the tage is still on the firewall under the hood, just behind the motor, it will have a gear code on it. Here are the codess.
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