1970 Muncie M20 4 Speed Transmission Wide Ratio GM


Out of stock

SKU: 32968 Categories: ,


David’s 4 Speeds only does the highest quality rebuilds, so this isn’t a cheap makeover. There are not any shortcuts taken when rebuilding our transmissions. All internal parts get looked over in great detail. You will never get a transmission with a chipped tooth. The photos are of the actual transmission you will get. They aren’t stock photos, we want you to see the quality of our work. We have nothing to hide.

1970 Muncie M20
4 Speed Transmission

Wide Ratio

Main Case 3925661
Tail Housing 3857584
Side Cover 335308

date code POR21A

Has a EXCELLENT gear set and has been rebuilt to include:

NEW 2nd gear
NEW bearing retainer locks
NEW magnetic fill plug
NEW synchro rings
NEW synchro ring kits
NEW hardware
NEW keys/springs
NEW front bearing
NEW rear bearing
NEW small parts kit
NEW bushing
NEW seals
NEW cluster pin
NEW gasket
OEM bolts.

Cases have been media blasted, steam cleaned and vibratory finished.  All threaded holes have been cleaned and tapped also.

A custom wooden crate and insurance is provided in the S&H costs.


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Davids4Speeds LLC

626 East Kilbourn #2304
Milwaukee WI 53202

3535 West State Street
Milwaukee WI 53208
(by appointment only)

Phone: +1 (262) 513-8331

Davids4Speeds LLC is owned and operated by David West. With 30 years experience as a mechanic and muscle car specialist, David West re-builds 4-speed manual transmissions for 196x-197x automobiles.

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