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| | | Forums66 Topics128,076 Posts1,055,922 Members48,430 | | Most Online14,466
Apr 26th, 2026 | | AD Chevy Trucks  Over 6,000 pictures Brad Allen has an awesome collection of Chevrolet factory pictures that he has set up from film strips. Check them out!
Lots of work on Brad's part ... pure enjoyment (and references) for you!
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For helping keep this great
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| | | | Joined: Apr 2008 Posts: 127 'Bolter | | 'Bolter Joined: Apr 2008 Posts: 127 | Did the original 3 speed transmission have synchros. Also what is the designation of that transmission. Thanks for any help. | | | | | Joined: Apr 2005 Posts: 2,097 'Bolter | | 'Bolter Joined: Apr 2005 Posts: 2,097 | Second and third gears were synchronized in that series transmission. It is known as an SM318 which was also the designation for the later open driveline unit. Most parts don't interchange with the later version, however.
Fred
1956 3100 Pickup/Red/350/3sp OD/PS/Disc Brakes
1957 Bel Air Sport Coupe/Red/355/TH350/PS/Disc Brakes
2017 Silverado LT Single Cab SB/Black/5.3/6 Speed Trans
1947 Willys CJ2A w/F-Head engine
| | | | | Joined: Mar 2014 Posts: 4,483 Moderator, Electrical Bay | | Moderator, Electrical Bay Joined: Mar 2014 Posts: 4,483 | And if you have a pickup in which the prior owner routinely used 1st gear as a downhill brake, that gear will be worn very oddly...making it howl loudly all the time and jump out of gear on acceleration. Good luck!
~ Jon
1952 1/2 ton with 1959 235 | T5 with 3.07 rear end
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