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Mod | | | Forums66 Topics128,138 Posts1,056,441 Members48,441 | | 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: Mar 2002 Posts: 9,115 'Bolter | | 'Bolter Joined: Mar 2002 Posts: 9,115 | 78Chev,
the radio for the GMC and the Chev are basically the same radio with a different dial display. You can buy a new dial glass to change it to GMC. The original radios had a mechanical vibrator in the power supply and the radio would run either with positive ground or negative ground. Now days you can buy a solid state replacement for the vibrator and you would need to make sure it was for the correct polarity that you want.
There were two different designs that were made, one from 1948 to 50 and another from 51 to 53. They are interchangeable in application. The older one has the back cut on an angle (slant back) and the newer one has the straight cut back. The dials are different so it is good to get the correct dial glass to have the stations align properly.
If you get to restoring one, we can help you out with answering all your questions. | | |
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