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69 rear code?

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Old Sep 14, 2010 | 05:02 PM
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Default 69 rear code?

Where is the code located on the rear? I see the posi tag on the plug and though it was on casing below that?

Have a 69 350/350 hp car and it seems like a lot of theres came with 3.70 gears, just wanted to verify on mine.
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Old Sep 14, 2010 | 05:25 PM
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Originally Posted by rgarrett
Where is the code located on the rear? I see the posi tag on the plug and though it was on casing below that?

Have a 69 350/350 hp car and it seems like a lot of theres came with 3.70 gears, just wanted to verify on mine.
Codes should be on the bottom, just forward of the rear cover. This will only tell you what the gear originally came with not necessarily what's there now. To determine what your gear ratio is, you can jack the car and spin the rear tire one full rotation. The number of turns your driveshaft makes in one tire rotation is your gear ratio.
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Old Sep 14, 2010 | 05:56 PM
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Hi rg,
Here's a typical rear differential stamp. It's from my 71, 3.36:1.
Hope this helps you to find what you're looking for.
Regards,
Alan

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Old Sep 15, 2010 | 09:46 AM
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great pic, thanks!
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