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Hi guys, can anyone help me with purchasing the right gear box?
I have a 411 rear end gears and a muncie m20 with 2.52 1st. Thinking of putting in a m22 with 2.20 1st. It's behind a big block chev, wondering if there would be much difference between the 2. I still want the acceleration.

Thanks.
 

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With the same applied torque,
The trans with the higher numerical ratios will give the quicker acceleration.
What should be compared is second and third gear ratios and the spread.
The trans with the closer ratios throughout will give a faster acceleration.
 

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Conventional (OEM) wisdom says that for ratios above 3.73 use the M21/22. Use the M20 for anything 3.55 and below.
 
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