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

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.

Worked great. Easy instructions. Easy to use. Great price. Replaced springs on a ls. Fit great feels durable.

they works well with hi performance spring kits as well easy-going but fun

Works great. Used this to install BTR dual valve springs on an LS3 while still in the car. Worked perfect and had no problems compressing the heavy springs.

The part looks good quality i will update when i install my btr double spring

Don’t waste your money. I got half way through changing springs on one head and had to switch to the second bolt the kit supplied ( that should tell you something) and then couldn’t finish the job before the second bolt and but are stripped. I did everything by hand but just simply compressing the springs the bolt and nut are junk. Now I’m mid project and have to order another one but it definitely won’t be this one!

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.

Worked great on my BTR .660 springs. Definitely oil the threads first.

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

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

This especially beneficial for the the difficult to reach valve springs near or slightly under the firewall. This type of compressor makes it easier to remove and install to keepers. The only thing that could be improved is to have the vertical bolt angle a bit more upwards to match the angle which the spring sit. This way the arms holding the top circular spring retainer would be more centered (equal).

Does what it supposed to do and the price is right. There are 2 bolts supplied, 1 spare, to put pressure on the springs that are not going to last long.

Great build strength but the thing is a pain in the ass when trying to push the springs down over the valve to get the valve keepers in place. Always presses them down unevenly. Had to resort to a homemade setup to get the job done without 4 hours of pissing around