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Mod | | | Forums66 Topics128,078 Posts1,056,029 Members48,433 | | 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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| | | | Joined: Oct 2012 Posts: 233 'Bolter | | 'Bolter Joined: Oct 2012 Posts: 233 | Where can I locate the 3 and 4 gear sychronizers for my pre 1958 SM420 trans? I am not good at web searches as I am returning zero results. The part numbers are 3814434 for third and 3767292 for fourth. I tried NAPA and Advance. Thank for any help. Mtneermike
1953 Chevy 3100 261 and SM420 53Chevy 31001953 Mack Firetruck 1972 Porsche 911 1986 Honda Goldwing
| | | | | Joined: May 2006 Posts: 8,351 'Bolter | | 'Bolter Joined: May 2006 Posts: 8,351 |
Bill Burmeister
| | | | | Joined: Oct 2006 Posts: 9,671 'Bolter | | 'Bolter Joined: Oct 2006 Posts: 9,671 | Yes, Bill is correct. Novak will have the new syncro rings but you
may have to buy a whole rebuilding kit, they were in the rebuild
package when I rebuilt mine.
dg
Denny G
Sandwich, IL
| | | | | Joined: Jul 2013 Posts: 863 Shop Shark | | Shop Shark Joined: Jul 2013 Posts: 863 | Another source that I have used....Driveline.com Look under SM420 transmission parts. Driveline has just about anything you will need and they are reasonable.
Tim
"Pay attention to the details! It ALWAYS pays off."
1949 Chevrolet 3100 Series 1/2 ton Pickup
1964 Chevrolet C10 (Ol' Yella) (SOLD)
1958 Chevrolet Biscayne 2 door (SOLD)
1970 VW Beetle
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