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Rear end efficiency

This is a discussion on Rear end efficiency within the Drivetrain forums, part of the LSx Technical Help Section category; has any one done test to see what after market rear has the best effciency? i cant find any thing ...

  1. #1
    formally 01 T/A 0verkill's Avatar
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    Rear end efficiency

    has any one done test to see what after market rear has the best effciency? i cant find any thing but was told there was a test with a moser 9" a strange 12 bolt and a s60.

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    Chief of his tribe! LSCyaL8R's Avatar
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    I don't have any numbers to back it up but I hear that the 9 inch rears are less efficient than the 12 bolt. something like a 2% extra drivetrain loss on the 9 inch but the benefit is that the 9 inch is stronger and runs quieter. I'd take a 2% hit for the peace of mind and extra hp capacity.

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    Senior Member bigrondownhiller's Avatar
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    Car craft did a test several month ago. Between the weight and losses they were all between 2 or 3 % of each other.

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    The 12 bolt has the lightest internals so it is the most efficient (and weakest) of the three. And.....contrary to popular belief.... the 9" is stronger than the bigger heavier Dana 60 due to a better design....

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    Quote Originally Posted by bigrondownhiller View Post
    Car craft did a test several month ago. Between the weight and losses they were all between 2 or 3 % of each other.
    I remember reading that article -- here's the link: http://www.carcraft.com/techarticles...wap/index.html

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    formally 01 T/A 0verkill's Avatar
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    thanks that is what i was looking for.

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