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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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#81861 08/22/2007 8:25 PM | Joined: Jun 2004 Posts: 103 Wrench Fetcher | | Wrench Fetcher Joined: Jun 2004 Posts: 103 | OK - Time for new plugs, points, condensor, rotor and cap. All good except for the plugs. My old ACDelco 45's are no longer available - only ACDelco R-45's. My original manual says to use non resistor plugs. What would be the difference? I have no radio in the truck. Do resistor plugs offer a suppressed spark? Can't find anything in the search archives to answer this. BW | | |
#81862 08/22/2007 8:39 PM | Joined: Jul 2000 Posts: 580 'Bolter | | 'Bolter Joined: Jul 2000 Posts: 580 | I've been advised to use non-resistor plugs too but I don't know the reason. After AC Delco went down the tubes, I ended up trying NGK B6S plugs as a substitute. They seem to be working well (in my 235). | | |
#81863 08/22/2007 8:52 PM | Joined: Feb 2004 Posts: 29,771 Kettle Custodian (pot stirrer) | | Kettle Custodian (pot stirrer) Joined: Feb 2004 Posts: 29,771 | The R-45's will work fine. The only difference is the current flow in the secondary wiring, and there's less of a tendency to burn distributor cap contacts, rotor tips, etc. with the resistor plugs. At one time, there was a problem with using a resistor-type plug along with GM resistor wire, called "TVRS" wire, but the advice changed in the mid-70's at the GM training centers, and we were told to use resistor wires and resistor plugs together. As long as the resistance of a plug wire does not exceed 1,000 ohms per inch, the resistor plugs will work as well as, or better than the original types.
Jerry
"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
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