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Mod | | | Forums66 Topics128,023 Posts1,055,370 Members48,420 | | 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: May 2001 Posts: 1,904 'Bolter | | 'Bolter Joined: May 2001 Posts: 1,904 | (I have the SM420 4-speed. Let's forget the granny gear and call the next three gears 1st, 2nd and 3rd because those are the ones I use.)
When I come to a stop sign with no one around, I'll sometimes shift down to 2nd and not stop completely. Shame on me. When I step on the gas, because I'm actually going too slow for 2nd, the engine and truck will shutter a bit. The same happens, of course, when I don't shift down to 2nd and give it some gas while going "too slow" in 3rd.
Does this lugging down and shutter hurt the engine when it's in one gear too high for the speed?
Thanks!!
1948 3/4-Ton 5-Window Flatbed Chevrolet 34 Years. Now with a '61 261, 848 head, Rochester Monojet carb, SM420 4-speed, 4.10 rear, dual reservoir MC, Bendix up front, 235/85R16 tires, 12-volt w/alternator, electric wipers and a modern radio in the glove box.
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