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Mod | | | Forums66 Topics128,023 Posts1,055,367 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!
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| | | | Joined: Jan 2002 Posts: 2,254 'Bolter | | 'Bolter Joined: Jan 2002 Posts: 2,254 | I picked up a 67 sm420 lid with the backup switch. Cannot wait to clean it and install it.
Dennis
-there is nothing stronger than the heart of a volunteer-
| | | | | Joined: Jan 2002 Posts: 2,839 'Bolter | | 'Bolter Joined: Jan 2002 Posts: 2,839 | A few years ago, I installed a backup switch in my SM420. Coolest project I've done.
Craig My '50 Chevy 3100 5 window, '62-235cu, 3:55 rear My truck ....... Respect The Rust If I'm not working on my truck, '65 m00stang or VW camper, I'm fishing with the wife or smoking Salmon.
| | | | | Joined: Jan 2002 Posts: 2,254 'Bolter | | 'Bolter Joined: Jan 2002 Posts: 2,254 | I cleaned the lid up today. Took a lot of elbow grease. I believe it will work. The shifter arm is bent different. Were they bent to lay down close to the seat in 1967?
Last edited by oldbluetruck; 11/21/2013 3:42 AM.
Dennis
-there is nothing stronger than the heart of a volunteer-
| | | | | Joined: Jan 2002 Posts: 2,254 'Bolter | | 'Bolter Joined: Jan 2002 Posts: 2,254 | I put the lid on. But now the transmission wants to pop out of 3rd gear. Are the lids and shifting forks different between the 54 and 67 lids?
Thanks,
Dennis
-there is nothing stronger than the heart of a volunteer-
| | | | | Joined: Jun 2012 Posts: 1,747 'Bolter | | 'Bolter Joined: Jun 2012 Posts: 1,747 | Shift arm is bent different to accommodate a different seat. Look at the 3-4 shift fork it could be bent and not putting the gear all the way in to place. You can use the shift lever from the old cover in the new one I think. I think you can use the shift fork as well if the one you have is damaged. Call Novak for tech information if needed. This is the link: http://www.novak-adapt.com/knowledge/sm420.htmBut as I said I think the parts will interchange with out issues.
Steve H
| | | | | Joined: Jan 2002 Posts: 2,254 'Bolter | | 'Bolter Joined: Jan 2002 Posts: 2,254 | Thank you Steve. I had read that this could happen and be a problem. I noticed there is a section in the shop manual on this replacement work. Things happen.
I did not want to loose my backup light feature.
Again, thanks
Dennis
-there is nothing stronger than the heart of a volunteer-
| | | | | Joined: Jan 2002 Posts: 2,254 'Bolter | | 'Bolter Joined: Jan 2002 Posts: 2,254 | Hi Denny. Will do.
I spoke with the mechanic at the museum today. He mentioned the 3-4 gears fork may be bent and/or worn, or -something- about pins and bearings may be missing or worn somewhere. We will open it up next wednesday. I'll let you know.
Dennis
-there is nothing stronger than the heart of a volunteer-
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