|Originally posted by Vesquar:|
Oh ok see I was unaware of this, I had an m22 rock crusher. Sorry on my part I thought Muncie was brand name :P learn new things every day
Muncie, Indiana is the location of what was the GM Muncie Transmission Plant, and was transferred under the "New Venture Gear" umbrella in 1990. The 4-speeds in the Fiero, the 5 speed Getrag (designed by Getrag and built by GM's Muncie plant) in the Fiero, and many other transmissions have been produced there. There's nothing particularly special about a transmission that was built there versus a Getrag that was built in Germany, such as the F40 was.
The best way to pick a transmission is to compare strength properties of the case, gears, synchros, etc… and the gear ratios themselves. Pick the one that best suits how you will use the car, and if you need to build it up a bit to handle more power, then do so. There were 3 different 4 speed Muncie transmissions used in the Fiero in 1984-86, with different torque ratings and gear ratios.