I am ready to purchase an autogear M22. I have heard varying opinions on which version to buy. Its between the standard ratio, and the wide. I would like a few more opinions to hash over before I purchase. I have a Lingenfelter 383 with torque figures in the 520 ft/lbs, and hp figures in the 540 range. Not exact figures until I can get the combo together and on the chassis dyno, but in the ballpark. I have a 12 rear with posi 4.10s. I will be changing to a 3.73 or 3.55 in the future to be able to run down the highway a little better. I have been told the wide is the way to go. But some swear by the standard version. WHICH WAY SHOULD I GO? Your opinion is appreciated. This car will be 99% mustang street fighter, and could possibly go down the 1/4 mile just to see the ##S. thanks......

bowtie, I prefer the standard M22 "close" because it is a little bit stronger than the wide ratio and it does not have the big "drop" when you shift into 4th.

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Joe

I'll second that......

The regular M22 ratios (2.21 first gear) would be the way to go in my opinion. I just got through building an AutoGear M22 to go behind my 400sb. I have 3.42 rear gears and I don't have any problem pulling out or melting the tires. It will require a little more clutch slippage, but if your engine makes alot of low end torque, you shouldn't have a problem. If your engine won't be making alot of low end torque or you don't like the idea of slipping the clutch a little more during takeoff, you might want to consider the M20 ratios.

The 2.21 is the way to go with your torque. I have it with my 4.10's and it works very nicely.

I must be the odd one. With 3.55s a close ratio box is terrible even with a BB. Personally I don't even like the wide ratio first gear a ST-10 has much better gear spreads.