Review on 🔥 NGK 3951 V-Power Spark Plug TR-55: Superior Performance in 1 Pack by Kevin Compton

Today I installed them on my 2004 Pontiac GTO. Although Revane says they don't fit, they do. I've done my research and am also familiar with the GM LS1 platform and they are popular in Corvettes, Camaros and GTOs, all of which have an LS1 engine. Torque specs are 11 ft-lbs for the GTO. There were no problems installing plugs. I used ACDelco cables which fit perfectly. I also checked the gap on the spark plugs and they were all set at 0.050, which is within tolerance for a GM LS1. These plugs have a copper core, so you'll need to change them every 30,000 miles.