4.56 gear, 325/50, stock ecm will it make it?

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12-17-2008, 06:28 PM

FASTFATBOY

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4.56 gear, 325/50, stock ecm will it make it?

I got 4.11 gears now, I go through the traps with the 325/50 at 6600. Will it take a 4.56 gear with the factory ecm and 4L60E?

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12-17-2008, 06:42 PM

T/A KID

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I have a calculator somewhere, but I say let it rip to 7 grand

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12-17-2008, 06:58 PM

96lt1m6

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that should be close to 7500 through the lights,hmmm pcm may n ot be too accepting of that but ya never know

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12-17-2008, 08:42 PM

BADHAWK51

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Here is a list of calculators this should help.

http://www.wallaceracing.com/Calculators.htm

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12-21-2008, 11:34 AM

FASTFATBOY

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Alot of those calculators wont allow for converter slip. Thanks guys.

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12-22-2008, 10:48 AM

Ray@Nitrous Outlet

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"Your New Gear Ratio computed from your Current RPM of 6600 rpm and Wanted RPM of 7200 and Current Gear Ratio of 4.11 is 4.48"

4.30's will give you room for converter slip

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