The primary four-speed guide transmissions used by Chevrolet are the Saginaw, Muncié and Borg Warnér versions, with Saginaw and Muncie devices being particularly made for Chevrolet. Ságinaw and Borg Warnér models are normally utilized on general purpose programs. Muncie transmissions are known for both top of the line and heavy-duty programs, with three different variations available: the Michael20, Michael21 and Meters22. Identity starts by visually identifying the products as Saginaw, Muncié or Borg Warnér models and then by differentiating thé three Muncie units visually and by solving the serial amount.
Action 1
![Saginaw Saginaw](http://www.probuildamerican.com/wp-content/gallery/4-speed-id-info/4-speed-id-2.jpg)
Inspect the transmission. Both Muncie ánd Saginaw transmissions have got 7-bolt part covers, while the Borg Warner provides a nine-bolt aspect cover, regarding to Season One.com. Also, the reverse lever on the Muncie units is installed in the extension casing, while the Saginaw reverse lever is certainly mounted in the aspect cover up
Below is a list of the information and parts that we can supply for your GM Cheverolet 14 bolt 10.5' Differential applications. Saginaw M19 Manual Transmission Overhaul Kit. GM T56 Installation Overview. Manual Trans Reference GM 3, 4, 5 and 6 speeds V24. GM 10-bolt Build-up, Part I. Either the Saginaw 10-bolt 7.65', or the Borg Warner 9-bolt. No 12-bolts, no 8.5' ring gears, none of that stock. Since this was a 2.73, I had to order the 3.73 gears that are specially made for '2 series carriers'. If you want a deal, you have to: A) Be very patient, B)be very observant, and C) be willing to.
Step 2
Locate the serial number to differentiate 1969 and upward Muncie transmissions. The transmission case provides various codes including the casting program code and the serial amount. The serial quantity provides the time of produce, however, on 1969 and later on transmissions there will be a notice program code at the end which recognizes the gear-ratio, which is various on all three Muncie versions. An illustration of the serial quantity can be 'P4D23B.'
Action 3
Decode the serial number. Based tó My SS.com, thé serial amount instance 'P4D23B' decodes as an Meters21 Muncie transmitting produced on Apr 23, 1974. The 'P' in the initial position designates Muncie, '4' designates the yr, 1974, and 'Chemical' designates the month, April, with 'A' addressing January and 'T' for Dec. The Letters F, G, I, T, N,O and Q are omitted. The next two numbers are usually the time of the 30 days, the 23rg, while the 'W' in the last positions designates the Muncie Michael21, with 'A' for the M20 and 'C' for the Michael22.
![Action Action](https://www.speednik.com/files/2018/03/10-bolt-chevy-2018-03-01_20-38-28_114986.jpg)
Identify Muncie 1963 to 1967 transmissions. These Muncies have got the same serial number format, minus the equipment ratio naming, so a spline and gear tooth count must be done. According to Nasty Z28.com, 1963 to 1965 Michael 20 transmissions have got 10 splines and 24 insight gear teeth, while 1966 and 1967 models have got 10 splines and 21 input gear teeth. Both the Meters 21 and M 22 possess 10 splines and 26 input gear teeth, nevertheless, the M 22 offers 'right cut' armor and weapon upgrades, which are usually not as directed as Michael 21 armor and weapon upgrades.
Tips
- The insight shaft runs from the transmission to the motor and can be component of the transmitting. The splines are on the shaft heading into the motor and the input gear will go into the transmission. This will be illustrated at the top of the 12 months One Tech page, while the input gears are usually highlighted at the bottom (find Reference 2).
- Since the Muncie M 22 will be a heavy-duty transmission, it is usually combined with high-torque big block motors and vehicles.
- equipment image by Snézana Skundric from FotoIia.com