The 1947 - Present Chevrolet & GMC Truck Message Board Network - View Single Post - 1980 Chevy K20 Longbed

LT7A · 09-22-2021, 05:48 AM

Interesting info. I never thought about a bigger gap causing you to burn up ignition components sooner. Still not sure if I get it. It seems that if the electrical potential is there, why not make it jump further? However, my last set of plug wires, cap and rotor didn't seem to last as long as the previous set. And they were installed along with an MSD box and I had started gapping the plugs wider. I wouldn't put it past MSD to recommend a wider gap which nets a small performance gain and also sells more ignition components. With regard to opening the plug gap, I'm speaking of stock truck V8s which are going to be in the 8.7 to 9.2 range for a compression ratio probably. In the final analysis, I'm just an enthusiast to try to pay attention. Do you have a formal background/experience with regard to this stuff?

09-22-2021, 05:48 AM	#14
LT7A Registered User Join Date: Oct 2015 Location: PNW Posts: 3,512	Re: 1980 Chevy K20 Longbed - “Alaskan Gold” Interesting info. I never thought about a bigger gap causing you to burn up ignition components sooner. Still not sure if I get it. It seems that if the electrical potential is there, why not make it jump further? However, my last set of plug wires, cap and rotor didn't seem to last as long as the previous set. And they were installed along with an MSD box and I had started gapping the plugs wider. I wouldn't put it past MSD to recommend a wider gap which nets a small performance gain and also sells more ignition components. With regard to opening the plug gap, I'm speaking of stock truck V8s which are going to be in the 8.7 to 9.2 range for a compression ratio probably. In the final analysis, I'm just an enthusiast to try to pay attention. Do you have a formal background/experience with regard to this stuff?