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Installation steps：
- First remove the valve cover, remove the rocker arm and rocker arm guide
- Next place the bottom aluminum plate where the rocker arm bolts are mounted and the middle section on top of the one with the studs and mount it on the head with 2 bolts, making sure the tool is set between the two valve springs. Hand tighten with a wrench and socket. Do not over tighten, if you use impact it will cause damage to the head.
- Place the top on the two valve springs and install the nuts. As shown in the scene diagram. Note: Always make sure the studs are greased.
- If you are using the head on an engine mounted head, then you will want to use a fitting of compressed air in the spark plug hole to keep the valve pushed close before tightening.
- Do not use impact as this will cause the nut to overheat and strip the threads! , only tighten the nut manually and slowly.
- To keep them from falling into the head, after compressing the spring, you can use a magnet to remove the valve retainer
- After removing the retainer, you need to slowly reverse the nut to release the pressure and remove the spring.
- Install the New spring using the same procedure. Hold it in place properly before releasing the pressure and make sure it is in place when you reinstall the valve retainer
Aaron Lancaster
2025-08-02 10:15:29
Recently had to do a DOD/AFM delete on my truck after a lifter failed & decided to eat the cam (thanks GM!). Since I had to replace the cam, might as well put a rowdy one in, which necessitated a spring change. This tool easily handled the task. Worked great.
Brandon
2025-07-30 10:20:30
I used for 5.3 ls motor
Chris Eminger
2025-07-11 11:02:36
worked great
Connor
2025-06-18 12:32:24
Didn’t get through a full set yet of heads without it binding up, turning it useless. Also was using this on a gen v 6.2 - it couldn’t compress the springs enough to get the keepers on. Had to add washers under the tool. Junk. Already ordered another, brand name one
thomas ford
2025-06-12 11:07:14
Decent quality for the price, works ok. No directions, so assembly can be hard to figure out
Customer
2025-03-24 12:59:04
USED MANY TOOLS FOR VALVE SEAL REPLACEMENT EVEN MADE MY OWN BUT COULD NOT PASS UP ON THIS DEAL. MADE THE JOB A SIMPLE TASK. USED THE EXTRA NUTS AS A STOPPER FOR THE COMPRESSION ROD LENGTH MAKING THE REMOVAL OF THE KEEPERS CONSISTENT. VERY MUCH RECOMMEND.
randy
2025-01-20 14:30:13
Makes changing springs and seals simple once you figure out how to use it. Would be 5 stars if it came with instructions.
Jerry L.
2024-12-26 13:29:19
Noy bad at all very affordable.
Customer
2024-11-13 14:18:32
Perfect as described
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