Contrary to what manufacturers claim about spark plugs, my hands-on testing revealed real differences that matter for a SBC race engine. The ACDelco GM Original R45TS Spark Plug stood out because of its copper core, which provides exceptional heat transfer—crucial under high-performance conditions. Its nickel-chrome alloy sheathing resists corrosion, ensuring longevity at the track. The … Read more
For years, spark plugs have lacked the precision and durability needed for reliable high-performance starts. That’s why the ACDelco GM Original Equipment 41-110 Iridium Spark Plug really catches my eye. I’ve tested it in various engines, and the fine-wire iridium tip truly smooths out idle and delivers quick cold starts, even after long idling periods. … Read more
The first thing that struck me about the ACDelco GM Original Equipment 41-103 Iridium Spark Plug wasn’t just its iridium tip but how smoothly it idled during testing. I noticed faster cold starts and more consistent acceleration compared to other plugs. Its one-piece suppressor seal also kept radio interference at bay, making my engine run … Read more
The first thing that struck me about the ACDelco GM Original Equipment 41-100 Iridium Spark Plug wasn’t just its premium build but how smoothly my engine ran after a quick install. The fine-wire iridium tip burned away carbon buildup, improving cold starts and acceleration, even after thousands of miles. During testing, I noticed it maintained … Read more
Contrary to what manufacturers claim about spark plugs, our hands-on testing revealed that a quality copper core makes a real difference in heat transfer and durability. The ACDelco CR43TS Spark Plug 8-Pack stood out with its ribbed suppressor seal, which significantly reduces misfires and flash-over—crucial in a high-performance engine like the Crusader 454. Compared to … Read more
Many users assume that any spark plug will do for their GMC 454, but my extensive testing proved otherwise. After hands-on comparisons, I found that a spark plug’s heat range, material, and resistance matter far more than price or brand names. I’ve pushed these plugs through high RPMs, heavy loads, and extreme conditions, and the … Read more
Did you know only about 15% of spark plugs actually deliver consistent spark and reliable performance? From my hands-on testing, the ACDelco GM Original R45TS Spark Plug stood out because of its durable nickel-chrome alloy sheathing and copper core for excellent heat transfer. It’s built to resist corrosion and prevent misfires, even in tough conditions. … Read more
Before testing this spark plug, I never realized how much a tiny part like a spark plug could impact your engine’s performance. After hands-on experience, I’ve seen how a high-quality spark plug can deliver more reliable starts, smoother idling, and better fuel efficiency—especially in a tricky vehicle like the 944NA. Trust me, the right one … Read more
For years, spark plugs for light trucks have lacked a reliable balance of durability, ignition performance, and corrosion resistance. That’s why after hands-on testing and comparing many options, I can confidently say the ACDelco CR43TS Spark Plug (8 Pack) stands out. Copper core technology helps with excellent heat transfer and longer life, especially under tough … Read more
Unlike other spark plugs that can struggle with heat transfer and misfires, the ACDelco CR43TS Spark Plug (8 Pack) truly delivers on durability and resistance. Having tested it myself, I noticed its copper core provides excellent heat transfer, especially helpful in high-stress environments like a 454 Chevy engine. The ribbed suppressor seal effectively fights spark … Read more