3mirrors 67605 Valve Spring Compressor Tool Compatible with 4.8 5.3 5.7 6.0 6.2 LS1 LS2 LS3 LS6 Chevy LSX Camaro, Corvette, Trans am, GTO, G8, CTS V, GM Trucks

Works great, just use oil on threads. Came with an extra center bolt but Ive done 2 pairs of heads so far and with the oil haven't had any issues.

Did the job good keep well lubed did my 5.3l no hassle

I used this on my 2009 Silverado 5.3 Amazon vehicle application stated it wouldn’t work with my truck but it worked flawless! I removed rockers and rocker base and it bolted in place with no problem, used grease on all bolts and nuts. Only used hand tools no power tools. I had absolutely no issues with the threads pulling or stripping, it is strong and after all 16 valve seals were replace it was in as good off condition as it was when it arrived. This tool was so simple. The instructions were vague the picture showed a spacer on top the instructions stated it goes underneath it does in fact go underneath as it gives the tool clearance to extend over the valve cover mounting bolt holes. I read the reviews before purchasing and my expectations were low and I had a backup plan in case it didn’t work. I honestly don’t understand why there were bad reviews unless they were from an earlier version, I bought mine in June 2024 and didn’t use it till March 2025. Keep the stud lubed well with grease along with the nut and washer and be sure that you tighten the stud into the tools frame, which is supposed to be on an angle by the way, which was perfect and it works flawless. The tool is Marked top, and that was the top on my Vehicle.

Out of all the different cheap tools for valve springs, this is the only one that worked for me. I'm really glad I didn't shell out the money for the name brand version. Was able to get all 8 pairs of valve springs set back into place on my 2013 GMC Yukon (6.2L Vortec). Like other reviews say, it does in fact take a bit of practice (and some cursing). Didn't have to do any re-threading or modifications, just had to mess around with it. Once I got the hang of it the rest was a breeze. A few things that helped me: 1) The instructions show that you can install the aluminum spacer two ways, top or bottom. In my particular case, I had to have the spacer installed on the bottom as shown in the 2nd picture. 2) When putting everything together, I used a small bit of engine assembly lube on the center screw that is used for clamping down the springs. After doing all 16, there's no noticable wear on the threads other than the paint now being gone. Only other bit of wear I noticed were shavings around the center nut & washer after doing a couple springs. Looks like it was just paint coming off, both from the screw and the washer spinning against the clamp as I was tightening things down. Just be sure to wipe it off and be careful not to lose any debris inside the cylinder head. 3) Holding the tool in place when bolting it down to the cylinder head helped make sure both springs were covered correctly. 4) Lastly, I tightened down the center nut just until it was snug against the springs. Then, while holding the "clamp" part of the tool against the springs (as shown in pic #3), I was able to nudge the springs as needed with my other hand or adjust the positioning of the clamp as needed. Doing it this way helped make sure the springs were centered around the valve stem as I tightened it down and allowed me to set the keepers properly. Hopefully this helps someone spend less time figuring out how the thing works. Other than the trial & error this was a wonderful time saver.

Works good, Took a few minutes to get used to but it works great! Cheap and works good! A must for Sloppy mechanics tool kit. I installed a set of pac 1219’s in some 706 heads