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Click on image for the lowdown. 
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| | | Forums66 Topics128,078 Posts1,055,936 Members48,430 | | 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: Jan 2008 Posts: 4,961 'Bolter | | 'Bolter Joined: Jan 2008 Posts: 4,961 | Low RPM engines such as tractor engines do just fine with internal resistor coils. However, with GMC engines that I ran approaching the 4000 rpm range, a GM type coil with a ballast resistor did better. | | |
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