I am looking to replace the stock valve springs with new ones. Right now I can't do a cam but would like to in the future. Is it possible to get a spring that will work with the stock cam and also be good for aperformance cam (like a CC306)? If so, please make a recommendation.

Thanks in advance!

 

Just wait till you do the cam swap cause the stock spring won't support the lift height of the new cam. You will waste your money on the stockers then have to replace them again.

 

I probably didn't explain myself very well. I am looking for an aftermarket valve spring for stock LT1 heads that will work with both the stock cam (now) AND an aftermarket (cc306 in the future).

Any help is sure appreciated.

 

Not a good idea to run a high pressure spring on a stock cam. You'll put unnecessary stress on your valvetrain and shorten its life. Wait for the cam.

 

How so?

Go ahead and get some good springs like the CC987s. I wouldnt run anything else. They are a dual spring unlike the crane kit everyone uses and CM 612 spring. I actually did exactly what you are talking about when I installed my 1.6 RRs. Didnt have the time or desire to put the cam in at that time so i installed the springs and RRs first.... month or 2 went by and the cam went in. Really makes the job easier not having to mess with it all at once b/c those 987s are a chore to get installed. btw they are good to .600" lift so they should work with the cc306 but youre cutting it kinda close... afaik a lot of guys have gotten away with running that spring with that cam.

 

For $35, I have decided to go with LT4 valvesprings until I do the cam change. For that price i'm not loosing anything and I don't have to commit to the cam change. I can do things at my own pace.

Thanks for the suggestions.

 

That will work for now on the stocker cam, but a 306 cam won't work cause lift rate is .525 on LT4 springs

 

For the CC306 Cam you need a good spring, the LT4 springs will not work. Use some Beehive springs form Com Cams, as they will enable a lift to 600, and they fit the stock spring seats so no machining is necessary.
I have a brand new set , with retainers and locks if interested. I was going to use them but my heads were ported etc by CNC, and they put spring cups in that are 1.26 inches and the 918 Beehive springs which I haev are 1.29 OD, so instead of breaking them by forcing them into the cups, I am selling them, 200 for retainers, springs and lock. Call Jeggs, etc and for 200(for everything I mentioned)you are saving about 50-70 bucks. You need there retainers also, as the factory retainers are too big.

 

Right. The LT4's are just a cheap replacement until I put in the cam. Then I will get a matching spring for the cam.

 

I may be jumping the gun, since I really don't have the final results in yet, but...I just lost a valve and a brand new engine (possibly) because I decided to use some springs that were marginally acceptable for the cam I had installed. As I said, don't know if this is the case.

But as mentioned, if you have an idea of what size cam you might be looking for in the future (based primarily on the type of driving you expect) then you would, in my opinion, be wise to have that spring installed now (unless of course you plan on installing a humongous cam later on, in which case, you will probably have to do other things too).

Bottom line is , that many of us "plan" on putting in that "correct" spring in as we move to a larger cam from a bably cam or larger RRs, but guess what--sometimes we just don't want to deal with the extra trouble and expense at the same time the cam is being installed.

Possible results: I'll let you know when I get the bill, if it was the springs that caused my engine failure. JMHO