3 or 4 series Carrier for 12 Bolt,,,How to tell the diff. - Chevelle Tech
Transmission & Driveline Transmissions and Differentials

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post #1 of 2 (permalink) Old Sep 20th, 06, 10:31 PM Thread Starter
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3 or 4 series Carrier for 12 Bolt,,,How to tell the diff.

How can you tell the difference between a 3 and 4 series carrier visually. Any numbers or measurements....Also whats the diff between the car and truck 12 bolt....Thanks for the help....

12 Bolt Posi Carrier
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post #2 of 2 (permalink) Old Sep 21st, 06, 7:49 PM
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Re: 3 or 4 series Carrier for 12 Bolt,,,How to tell the diff.

There is a casting number on the end of the Eaton posi. The 3 series is a EDB30140 and the 4 series is a EDB30174. The number is next to the bearing on the end opposite of the ring gear. The truck posi is weaker and has a different offset on the ring gear flange.
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