Click on image for the lowdown. 
====
| | | Forums66 Topics128,096 Posts1,056,487 Members48,444 | | 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!
| | THANKS!
For helping keep this great
old truck web site
on the Internet for over 30 years! and not clogged down
with Ads!  Again, thanks!
| | | | Joined: Apr 2005 Posts: 2,099 'Bolter | | 'Bolter Joined: Apr 2005 Posts: 2,099 | I wouldn't recommend buying the brass syncro rings unless the shop has a good understanding of how to
install them correctly. The procedure includes staking the brass rings into the housing to secure
them. I have had that era syncro assemblies rebuilt by Anaheim Gear in Anaheim, CA.
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: Dec 2020 Posts: 1,966 'Bolter | | 'Bolter Joined: Dec 2020 Posts: 1,966 |
~ BD.
"You won't find me in an old folks home" Pioneer Florida Cracker
1958 Apache Stepside
1958 Apache 1/2 ton Panel
1959 Apache 1/2 ton Panel
| | | | | Joined: Jan 2008 Posts: 4,962 'Bolter | | 'Bolter Joined: Jan 2008 Posts: 4,962 | If the transmission is original you need a 3774720 synchro hub. However you need to look at the synchro. 1952 and earlier used a 2 lug syncho, 53 and 54 used a 4 lug synchry and 55 and up used a completely different synchro. If this is what you have the 3774720 should fit. They are getting scarce, but there are a few NOS around and some good used. 50 years ago, I replaced a lot of synchro rings, but now I would just replace the whole syncro hub. If you can't find anything, take a photo of what you have. i probably have one. | | | | | Joined: Sep 2009 Posts: 5,964 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: 5,964 | Bornco - Guessing that your post is really about wanting to find a replacement for your 2-3 speed synchro? If so, we need to move the post into the Truck Parts Wanted forum as that's the proper place for such requests. Okay to move???
~ Dan 1951 Chevy 3 window 3100Follow this story in the DITY Gallery"My Grandpa Carl's Truck and How it Became Mine"1966 Chevelle (Wife's Hot Rod) | 2013 Chevy Silverado (Current daily driver) US Army MSG Retired (1977-1998) | Com Fac Maint Lead Tech Retired (1998-2021)
| | | | | Joined: May 2005 Posts: 227 'Bolter | | 'Bolter Joined: May 2005 Posts: 227 | Bornco - Guessing that your post is really about wanting to find a replacement for your 2-3 speed synchro? If so, we need to move the post into the Truck Parts Wanted forum as that's the proper place for such requests. Okay to move??? At this point. No... I am not in a position to rebuild the transmission and I don't know if my transmission guy wants to at this point.
1960 Chevy Apache (C10)
1965 Chevy C30 Dump Truck
1966 Chevy C30 Tow Truck
| | | | | Joined: Sep 2009 Posts: 5,964 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: 5,964 | At this point. No... I am not in a position to rebuild the transmission and I don't know if my transmission guy wants to at this point. Understood.  Looks like you’re just fact finding on what’s needed, so we can leave it here and see about helping gather the info. 
~ Dan 1951 Chevy 3 window 3100Follow this story in the DITY Gallery"My Grandpa Carl's Truck and How it Became Mine"1966 Chevelle (Wife's Hot Rod) | 2013 Chevy Silverado (Current daily driver) US Army MSG Retired (1977-1998) | Com Fac Maint Lead Tech Retired (1998-2021)
| | |
|
|
