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Mod | | | Forums66 Topics128,167 Posts1,057,021 Members48,458 | | 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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| | | | Joined: Jul 2014 Posts: 1,292 Moderator for Tons o' Fun , Co-Moderator Driveline Forum | | Moderator for Tons o' Fun , Co-Moderator Driveline Forum Joined: Jul 2014 Posts: 1,292 | Looking for some advice from those who have rebuilt an SM420 Transmission. The rebuild guide says to "press" the 3rd gear bushing ( made of brass alloy ) onto the shaft. The new bushing did not require much of a "press" to install it onto the shaft and press on until it bottoms out on the second speed thrust washer. I was able to force it onto the shaft with my fingers. I'm thinking something is wrong. Either the new mainshaft is undersized or the bushing ID is oversized. Any thoughts on this ?
GM 591482 Bushing, Grp. 4.399, 3rd gear bushing
Ron - - Dusty53 1954 Chevy 3604In the Gallery Forum "You can't dance with the Devil and then wonder why you're still in Hell."
"They will forget what you've said, and they will forget what you have done but they will never forget the way you made them feel." | | |
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