Review on 🔧 LSX Engine Valve Spring Compressor Tool for Chevy 4.8L-6.2L LS LS1 LS2 LS3: Compatible and Effective by Jim Bethea

Worked fine for me. I had motor heads. It took me a while to figure out how to assemble it. Check out my photos to see what worked for me on the LM7. It took the two heads about 25 minutes to remove the valves and gaskets. I would tighten it all the way. To move the valves down. Then he took a rubber mallet and tapped the valves lightly from below. They floated up and the servants fell out. Hold a rag over the springs as you tap so you don't lose the retainer. Slightly lower the single main bolt to allow the use of a deep socket and wrench. Otherwise you need to tighten it with a wrench. I doubt this thing will last longer than a few valve spring changes.