Review on 🔧 Aumzong Chevy GM Trucks Valve Spring Compressor Tool for LS1 LS2 LS3 LS6 Engine, 4.8 5.3 5.7 6.0 6.2, LSX Camaro, Corvette, Trans am, GTO, G8, CTS V,67605 by Anthony Daniels

The unit is ok, does what it's supposed to do but the metal used for nuts and bolts is flimsy. I swapped out the springs for my BTR Stage 3 kit. The new springs are rated for .650 travel, so they're much stronger. I was able to finish one head but by the time I got to the second the bolt had started to come loose as had one of the nuts. I ended up going to the hardware store and buying higher quality nuts and bolts. Shaft and nut have M8 1.25 metric thread. It doesn't have to be as long as the ones that come with it if you're doing SBC.