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Curbside Classics Archives
Earl Thompson Archive
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![Before about 1930, most cars used unsynchronized sliding-gear manual transmissions, which were aptly nicknamed “crash boxes” because shifting without clashing gears took real skill. In 1929, however, Cadillac and […]](https://i0.wp.com/www.curbsideclassic.com/wp-content/uploads/2025/07/1929-Cadillac-341B-convertible-coupe-tan-Mecum-Auctions-front-3q-left.webp?resize=115%2C115&ssl=1 "1929 Cadillac/LaSalle Synchro-Mesh Transmission – “Shifting Is Made Simple And Clashing Of Gears Is Ended”")
1929 Cadillac/LaSalle Synchro-Mesh Transmission – “Shifting Is Made Simple And Clashing Of Gears Is Ended”
Posted on July 13, 2025 | 12 CommentsBefore about 1930, most cars used unsynchronized sliding-gear manual transmissions, which were aptly nicknamed “crash boxes” because shifting without clashing gears took real skill. In 1929, however, Cadillac and […]
