View source for Volvo M400 & M410 transmission

{{one source|date=June 2025}}
The '''Volvo M400''' is a [[gearbox]] from [[Volvo Cars|Volvo]]. It was used in [[Volvo 164]]<ref name="manual">{{Cite book |url=https://docar.cz/navody-k-obsluze/volvo-164-servisni-manual.pdf |title=Service Manual - Volvo 164 |publisher=Volvo |year=1974 |page=0:12-0:14 |chapter=POWER TRANSMISSION, REAR AXLE |access-date=2024-01-07 |archive-date=2023-03-22 |archive-url=https://web.archive.org/web/20230322193044/https://docar.cz/navody-k-obsluze/volvo-164-servisni-manual.pdf |url-status=live }}</ref> and in a modified version, a limited number of the early 1970 [[Volvo 1800E|1800E]]. It is a stronger version of the [[Volvo M40 transmission|M40]] gearbox, designed to withstand the higher power of the [[Volvo B30 engine|B30 engine]]. Its drain plug is on the opposite side from that of the M40.{{Cn|date=January 2024}}

It was never factory-equipped with the "long stick" shifter handle. The shifter interchanges, opening up swap possibilities. Owners have found that while the bearings' lifespan might be similar to that of the M40, the torque capacity is on the order of double. Gear ratios are effectively the same (though derived from a different tooth count) as the M40s and followed that transmission's change to a lower (numerically higher) first gear beginning with the 1973 model year.{{Cn|date=January 2024}}

When equipped with the electrically operated [[Overdrive_(mechanics)|overdrive]], the gearbox was known as the '''M410'''.<ref name="manual"/>

== References ==
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[[Category:Volvo Cars]]
[[Category:Automobile transmissions]]

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