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| | | Forums66 Topics128,062 Posts1,055,851 Members48,428 | | 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: Feb 2001 Posts: 92 Wrench Fetcher | | Wrench Fetcher Joined: Feb 2001 Posts: 92 | Hey, Check out http://www.off-road.com/jeep/tech/convtrans/gm/gmsm420id.html I had all the same questions that you do and the folks at stovebolt have helped me immensely! Now maybe I can start helping a little. Anyway, the gear ratios and some good info on the Muncie SM-420 are at the site I listed above. Good Luck, Tom
Whats down in the well comes up in the bucket, so watch who's KoolAid you drink.
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