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Old 08-03-2010, 01:57 AM
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Flowjoe Flowjoe is offline
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Default '69 HD rear end

On a stock HD Safe-T-Track rear axle (on a '69 Goat) the ring gear still has 10 bolts - correct? What is the diameter of said ring gear? How does it differ from the standard Safe-T-Track rear?

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Old 08-03-2010, 06:51 AM
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What I believe to be true -

Same ring gear as non-HD.

4 pinion diff (non HD has 2 pinion)

HD has forged axles - rougher texture with slightly tapered ends - stronger than cast axles, which are smooth but look slightly beefier.

Nodular iron housing - denoted by "N" cast into nose of housing.

Scott

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Old 08-03-2010, 06:54 AM
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The ring gear diameter should be 8.2".

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Old 08-03-2010, 10:45 AM
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Quote:
Originally Posted by bulletpruf View Post
What I believe to be true -

Same ring gear as non-HD.

4 pinion diff (non HD has 2 pinion)

HD has forged axles - rougher texture with slightly tapered ends - stronger than cast axles, which are smooth but look slightly beefier.

Nodular iron housing - denoted by "N" cast into nose of housing.

Scott
Thanks you - very helpful

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Old 08-03-2010, 10:48 AM
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Quote:
Originally Posted by 2002Z4CSS View Post
The ring gear diameter should be 8.2".

That's what I thought. - thanks

OK, anyone, what's the diameter of the pinion shaft on the HD? On the standard? I am pretty certain they are larger than the Chevy 8.2 which is 1.438".

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Old 08-03-2010, 10:54 AM
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I have a 3.90 pinion/yoke in my garage, and it is definitely bigger than the chevy 8.2.

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