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What gear for DYNO Pull

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Old Sep 5, 2005 | 07:29 PM
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Default What gear for DYNO Pull

I know when I had my 3.42 I did my dyno pulls in 4th...

Now I have 4.10s so I was wondering do I do my pulls in 5th now?????
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Old Sep 5, 2005 | 07:45 PM
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still 4th, its a 1:1 ratio in trans. But the gears will skew hp/torque some. id like to know your before and after 4.10 dyno results.

Dave
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Old Sep 5, 2005 | 08:00 PM
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well I just put a procharger on so my reading will be alot higher..

but yea I wish I would have dyno'd it after the 4.10 install..

So will the numbers read higher or lower?????
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Old Sep 5, 2005 | 09:07 PM
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The higher gear, the lower the dyno results will read. For example, the same vehicle will have lower hp/torque figures with a 4.10 gear than a with a 3.42, but on the road, the 4.10 will be quicker.
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Old Sep 5, 2005 | 09:17 PM
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Originally Posted by joseph796
The higher gear, the lower the dyno results will read. For example, the same vehicle will have lower hp/torque figures with a 4.10 gear than a with a 3.42, but on the road, the 4.10 will be quicker.
How can gears affect horsepower? I can see it moving the power to different speeds but it should remain the same at rpm's before and after gear change. A higher gear may not let you attain the peak power.
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Old Sep 6, 2005 | 12:30 AM
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Basicly you need to find out where 1:1 is. An example might look like this:
Final Drive: 3.42:1
GEAR RATIO
1 2.66
2 1.78
3 1.30
4 1.00 ***
5 0.74
6 0.50
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