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Muncie (GM)

Muncie (GM) M20

From the Gearbox Wiki, the reference for people who still shift their own.

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Muncie (GM) M20 is a manual gearbox from Muncie (GM). The Society has 2 vehicles on file with it, 2 with a source we opened and 0 still leads.

Oldsmobile

VehicleYearsShift patternGearbox sourceMembers
Oldsmobile Cutlass / F-85 Colonnade
Optional 4-speed Muncie M20
[1]
Applies to: 1973
19734 speed, reverse top leftCorroborated

Pontiac

VehicleYearsShift patternGearbox sourceMembers
Pontiac Grand Prix 2nd gen
389 V8, 4-speed manual
[2]
Applies to: 1965
19654 speed, reverse top leftCorroborated

References

  1. Wikipedia. Wikipedia: optional four-speed Muncie M20 in 1973. [link]
  2. Wikipedia. Wikipedia: 3- and 4-speed carried over from 1964; 1964 four-speed was the Muncie M-20 or M-21. [link]
Categories: Gearboxes | Muncie (GM)

This page was last edited on November 11, 2026. Gearbox codes change by year, engine and market. Send a correction.

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