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Dyno a 4.10?

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Old Jul 23, 2007 | 09:49 AM
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Default Dyno a 4.10?
Anyone know what the 4.10 over the 3.42 rear costs in RWHP?
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Old Jul 23, 2007 | 11:04 AM
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figure 10 rwhp.

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Old Jul 23, 2007 | 11:21 AM
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Originally Posted by cam99
Anyone know what the 4.10 over the 3.42 rear costs in RWHP?
Keep in mind that is not a real loss.. The Dyno simply cannot translate the correct number.

If the dyno measured foot lbs direct from the tires instead of calculating it you see a huge difference..

Ask your tires when they go up in smoke when you hammer the pedal if they felt an HP loss..

I love my 4:10's!!!
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Old Jul 23, 2007 | 11:56 AM
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you wont feel it...
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Old Jul 23, 2007 | 12:10 PM
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Originally Posted by Halfway
you wont feel it...
The HP loss you mean...
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Old Jul 23, 2007 | 12:34 PM
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Originally Posted by chuckster
Keep in mind that is not a real loss.. The Dyno simply cannot translate the correct number.

If the dyno measured foot lbs direct from the tires instead of calculating it you see a huge difference..

Ask your tires when they go up in smoke when you hammer the pedal if they felt an HP loss..

I love my 4:10's!!!
There is definately a loss due to higher drivetrain loss with the upgraded gearing. But the loss of 1-3%HP loss comes at a 20% increase of rwtorque (from 3.42's). A trade most of us will likely make
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Old Jul 23, 2007 | 12:41 PM
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20% seems a bit high. Does anyone have any literature on this or something? I am curious as well.
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Old Jul 23, 2007 | 02:12 PM
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Originally Posted by OMG its Jason
20% seems a bit high. Does anyone have any literature on this or something? I am curious as well.
http://www.wallaceracing.com/reargear.htm
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Old Jul 23, 2007 | 03:26 PM
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Originally Posted by OMG its Jason
20% seems a bit high. Does anyone have any literature on this or something? I am curious as well.
20% increase in gearing = 20% increase in torque at the wheels.
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Old Jul 23, 2007 | 03:43 PM
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Originally Posted by FRCTony
20% increase in gearing = 20% increase in torque at the wheels.
so if you have 400rwtq, you will now have 480
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Old Jul 23, 2007 | 04:02 PM
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Originally Posted by chuckster
so if you have 400rwtq, you will now have 480
In 4th gear.
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