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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!
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| | | | Joined: Feb 2007 Posts: 385 Wrench Fetcher | | Wrench Fetcher Joined: Feb 2007 Posts: 385 | This is for the 195? Chevy mutt. (My wife has named it Dumpy because we couldn't figure out how to keep the bed from going up when we loaded it.)
I'm not really sure that it has an SM 420 in it. It seems like it has a lot of gears, but the shift pattern is a big circle. Pushing the shift lever up only stops when your knuckles have impacted the dashboard, and pulling toward me the lever is stopped by the seat. I got it into reverse once (enough to back over a 4x4 chck anyway, but it seems like it was to the left and down. In my truck with the SM465 reverse is to the right and down.
Seriously, the shift pattern reminds me of a time when an airport crash crew left one of their water pumpers parked across our driveway so we could fix the radio. When it was time to go home I had to figure out which one of the four engines wasn't a pump engine, (Turned out that the drive engine was a Diesel and the other three were Chrysler 392 Hemis.) The gear shift moved around in a circle about 2 feet in diameter. I finally found a gear by pushing outwards, hard, while making the circle.
Is it possible that an SM 420 top cover could get into this condition?
195? Chevy 3800 dump truck
1973 Chevy C30 cab and chassis
1987 Suburban 3/4 ton 6.2L Diesel
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