1967 Tempest stock rearend 3.23 gears. Good rearend? - Pontiac GTO Forum
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post #1 of 2 (permalink) Old 06-26-2018, 11:43 PM Thread Starter
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1967 Tempest stock rearend 3.23 gears. Good rearend?

Hi people on GTO forum, I'm new to this website but it looks like a really good resource. I have a 67 tempest that i am turning into a goat, and it has the stock 10 bolt 3.23 ratio rearend. I was wondering if these are strong enough to hold a good amount of power, or if there is a good posi conversion out there for it? Or should i just upgrade to a 12 bolt or something? I will be putting a 400 with #62 heads and a muncie 4 speed in front of it, so i want a rearend i know can handle it. Thanks
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post #2 of 2 (permalink) Old 06-27-2018, 07:13 AM
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If your budget will allow, I'd go with the 12-bolt.

But, some 8.2's will last, with hard street tires.

The only 8.2 I broke was at the track, with slicks, behind a 455.

pinion head is the rear end guy here. He can tell you everything you need to know about rear ends.
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  Pontiac GTO Forum > The 1964-1974 Pontiac Tempest, Lemans & GTO > 1964-1974 Tempest, Lemans & GTO Undercarriage, Frame, Transmission and Differential Discussions.

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