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Global Mod,
Mod | | | Forums66 Topics128,087 Posts1,055,998 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!
| | 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: Jan 2008 Posts: 4,961 'Bolter | | 'Bolter Joined: Jan 2008 Posts: 4,961 | Back in the 50's we referred to the old one as the "GM sliding gear 4 speed" and the newer one as the "GM synchro or SM420". They do not bolt to the same clutch housing. | | |
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