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What Ratio T56 Magnum to go with?

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Old 10-14-2023, 02:10 AM
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Default What Ratio T56 Magnum to go with?

Hey everyone,

I have an LS2 swapped Mitsubishi 3000gt that I am wanting to put a T56 Magnum in. I am unsure which ratio to go with and want to see if you guys had any advice. The goal of the car is to be a track/canyon car, no drag racing. Engine wise I will be installing a mild cam and supporting mods. The rear end ratio is 3.307 and tires are 24.5 inches tall. What would you guys recommend for my situation?

Thanks,
ACoop
Old 10-14-2023, 12:07 PM
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jmd
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Re: the 2.9x / 0.63 Magnum,

Your tires are shorter and your rear gear is taller than an LS2 GTO. Go test drive one. Gears 1-4 are near identical to a Magnum wide ratio. They are evenly spaced but wider percentage drop (than the 2.66 boxes.)

5-6 are a little taller in the GTO than the Magnum.

If you find you really want the 1-4 closer together, the 2.66 unit is an option. It wouldn't hurt to drive something with those ratios.
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Old 10-14-2023, 08:29 PM
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Id recommend the 2.66 because first gear is useless in the other ratio. Ive got 3.27 with 25.6” tires and its great
Old 10-14-2023, 08:56 PM
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Given the short tires, I would go with the 2.66 / 0.50 version. Personally I really like the .50 overdrive for the highway. I like being able to cruise at 75MPH at 1800RPM.

I think ultimately the answer will be based on what is important to you.

Andrew
Old 10-31-2023, 09:22 PM
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The close ratio for street and road course racing and the deeper first for drag launches.



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