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Labor Day Putting down your wrenches or time for
MORE wrenching? 
Plenty of places to share. | | Click on image for the lowdown. 
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| | | Forums66 Topics128,005 Posts1,055,261 Members48,418 | | 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: Dec 2015 Posts: 2,062 Big Bolt Forum Moderator | | Big Bolt Forum Moderator Joined: Dec 2015 Posts: 2,062 | SM420 and SM465 are Chevy truck trannys. (4 speed, shifter on top, granny 1st gear). Neither one will make it go faster ad they are straight through on 4th gear. Novaks has a lot of info for identifying your trans. Below is a link to the SM465, which was used in 1972 in 4 speed trucks with the granny 1st gear https://www.novak-adapt.com/knowledge/transmissions/manual/sm465 | | |
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