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Mod | | | Forums66 Topics128,042 Posts1,055,497 Members48,424 | | 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
old truck web site
on the Internet for over 30 years! and not clogged down
with Ads!  Again, thanks!
| | | | Joined: Jan 2013 Posts: 1,518 'Bolter | | 'Bolter Joined: Jan 2013 Posts: 1,518 | Even with the SM-420 4-speed, he'll still drive it like a 3-speed...that 7:1 first gear is not much good unless you're in a parade. Mike B  As a recent convert from the 3sp to the sm420, There is that granny gear that is nice to play with but the best advantage over the 3sp is having the syncho on the (2nd) gear cluster, the gear you normally start out in. I hated to either have to make a complete stop to get it into first on the three speed.
1953 Chevrolet 3100261 cu inch, sm420, 3.55 rear, torque tube still,omaha orange, still 6 volt, RPO green glass, side carrier spare, all done In the DITY GalleryVideo of the 261 running1964 GMC 1000305 Big Block V6, sm420, the next cab off restoration
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