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Joined: Jan 2015
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'Bolter
'Bolter
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Posts: 51
Is there a vendor that sells a 3 speed transmission rebuild kit with 2-3 synchros for a 1950 chevy 3100.

Last edited by Gdads51; 07/06/2025 1:22 PM. Reason: add detail to title
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Kettle Custodian (pot stirrer)
Kettle Custodian (pot stirrer)
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Probably not- - - -that synchro has been out of production for many years. I believe there are some specialty rebuilders who are rehabbing old ones, but they're e$$$$pensive! You'll probably be more likely to find a complete transmission easier than rebuilding parts.
Jerry


"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
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Crusty Old Sarge
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I have a 3 speed transmission from a '50 3100 just taking up space in my shop. Send me a PM.


~ Craig
1958 Viking 4400
"The Book of Thor"
Read the story in the DITY
1960 Chevrolet C10
"A Family Heirloom"
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'59 Apache 31, 327 V8 (0.030 over), Muncie M20 4 Speed, GM 10 Bolt Rear... long term project (30 years and counting)

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'Bolter
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Anaheim Gear in Anaheim, CA has rebuilt the 2-3 Syncros for the later - open driveline SM318/319
transmissions for me. I believe they also do the earlier ones as well. It's likely that a rebuildable
core would be required.
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
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Gearhead, Stovebolt Tech and Parts Tracker, Mod for Swap Meet and GTT
Gearhead, Stovebolt Tech and Parts Tracker, Mod for Swap Meet and GTT
Joined: Sep 2009
Posts: 5,985
Bicounty - A little web searching located the following current resources related to rebuilding your 1950 3100 3 speed:

1 - GM CHEVROLET 3 SPEED S/M 318 REBUILD KIT 4 BOLT 1940-1954 ENCLOSED DRIVELINE - (further description indicates the kit may not include all necessary needle bearings and no mention of the synchros)

2 - BK131A - GM Chevy Muncie 318 3 Spd Transmission Rebuild Kit 1950-1969 - (this kit appears to include extra parts that won't be needed on your 3 speed as they apply to later models of the 3 speed)

3 - Chevy 3-speed Synchro Ring, 1949-1954 - (a previously unknown to me part that further description indicates you can rebuild your 2-3 Synchronizer drum using 2 of these to replace the worn out Synchros) *

* This is a Canadian Company which has a link at the top of the page regarding US pricing.
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~ Dan
1951 Chevy 3 window 3100
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