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Just three types of Muncie 4-speeds are available based on the RPO (regular production option) code used when a car was ordered: the M20 (standard wide-ratio), M21 (close-ratio), and M22 (heavy-duty close-ratio).
9 lip 2017 · Identifying a Muncie 4-speed transmission can be crucial for both restoration projects and performance upgrades. Here’s a simple guide to help you accurately identify your Muncie transmission, especially for Chevrolet vehicles.
25 sty 2022 · One more way to identify the Muncie is via stamped codes in the case, which indicate when the transmission was built at Muncie (see How To Read Muncie Build Date Codes chart). According to Cangialosi, the date was based on model year, not necessarily the calendar year.
20 lis 2020 · Learn how to identify production code numbers, VIN numbers, and more on a Muncie transmission. Get in the right gear with these tips
24 kwi 2014 · They work by kinda putting a second transmission behind your first one. The second tranny is run by an electric solenoid that pushes it into gear when you want to up-shift. You get up to 50 or so with your normal tranny, hit a button, and it shifts into "fourth" gear and you can continue on.
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transmission is stamped on the passenger's side of the case just ahead of the extension. The first letter is P for Muncie H.D. 4-speed aluminum case. The next number is the last digit of the model (not calendar) year (3 or 4). A letter designates the month produced (see chart) and two digits are the day of the month. A suffix letter ends the code.
