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Power loss with 12bolt

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Old 06-10-2008, 05:29 PM
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Default Power loss with 12bolt
about how much power is lost through the drive train on the t-56 with a 12 bolt and 4.10s?
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Old 06-10-2008, 06:06 PM
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I went from a 10-bolt with 3.73s to a 12-bolt with 4.11's, added an Underdrive pulley and the car put down the same exact HP on the dyno.
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Old 06-10-2008, 06:23 PM
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really? Oh, well i also have a solid steel drive shaft, I'm sure i have some power loss with that.
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Old 06-10-2008, 06:27 PM
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You do get a power loss, to say 15 hp isnt out of the question
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Old 06-11-2008, 01:18 PM
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Originally Posted by WS6TransAm01
I went from a 10-bolt with 3.73s to a 12-bolt with 4.11's, added an Underdrive pulley and the car put down the same exact HP on the dyno.
You'll get TQ multiplication with the gear change, and less drivetrain loss with the UD pulley, so overall you should conclude that the 12-bolt will have a ~5-7% power loss over a 10-bolt.
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Old 06-11-2008, 02:03 PM
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Originally Posted by Domexitium
really? Oh, well i also have a solid steel drive shaft, I'm sure i have some power loss with that.
I'll bet; that sucker must be really heavy.
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