Replacing valve springs
05-31-2009, 11:54 AM
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Replacing valve springs Im about to swap out my 91k mile springs for new ones since I cant even rev past 4k without sounding like all hell is going to break loose 
Id like a spring that I dont have to worry about checking installed height and all that, just pull em out and pop em in... any suggestions on what spring to run with a stock motor and cam?
How hard is this task, and is there anything else I will need besides the springs and valve cover gaskets? Any other tips or tricks will be appreciated
Id like a spring that I dont have to worry about checking installed height and all that, just pull em out and pop em in... any suggestions on what spring to run with a stock motor and cam?
How hard is this task, and is there anything else I will need besides the springs and valve cover gaskets? Any other tips or tricks will be appreciated
05-31-2009, 12:29 PM
#2
Your best bet would be GM 12586484 valve springs. This is the LS6/LS2/LS3 stock valve spring that is plenty for a stock cam and the price is right. You should also invest in new valve seals and valve locks.
If you've never done it before, it will take a few hours. You'll need an air compressor to pressurize the cylinder and a valve spring tool. I highly recommend the old Crane valve spring tool now available through Speed Inc. Here is the tool: http://www.speedinc.com/cont.cfm?cid=C0000900
If you've never done it before, it will take a few hours. You'll need an air compressor to pressurize the cylinder and a valve spring tool. I highly recommend the old Crane valve spring tool now available through Speed Inc. Here is the tool: http://www.speedinc.com/cont.cfm?cid=C0000900
06-01-2009, 08:30 AM
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Good luck !! I would be a little nervous doing it on my own. Imagine the horror of a valve dropping? I am sure you'll be fine though. The last poster gave you some good advice.
06-01-2009, 03:42 PM
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^ lifters will stay up if cam is still in block.
LS6 springs are wonderful for stock applications. And cheap. Do the valve seals because you are 98% of the way there, and they are also cheap.
You don't need new valve cover gaskets because they are re-useable rubber.
Tim's tool is awesome. Used it and it worked perfectly even under the windshield on cylinders 7 & 8.
LS6 springs are wonderful for stock applications. And cheap. Do the valve seals because you are 98% of the way there, and they are also cheap.
You don't need new valve cover gaskets because they are re-useable rubber.
Tim's tool is awesome. Used it and it worked perfectly even under the windshield on cylinders 7 & 8.
Last edited by eseibel67; 06-01-2009 at 04:05 PM.
06-02-2009, 03:25 PM
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Just did my springs last night. Tims Tool(s) were fantastic!!! Pen magnet, vasoline, small flat-tip screwdriver and good ratchet. The Tims tool hose option lets you use your compressor (if you've got one - adjusted to about 60#) to hold the valves up when changing springs.
