Nickr12

Hey everyone

Picked up an 03 z06 with 32k. I've read about the unfortunate occurence of valve spring issues. For my ease, would you guys recommend BTR dual springs on stock cam. I don't plan on doing more than your basic bolt ons. Also, would I need pushrods as well?

Thanks

laurent_zo6

On my stock '02 Z06 I replaced the original yellow springs with the newer blue springs (OEM) #12499224. Replaced the intake and exhaust valve seals at the same time. Might be a good idea to change the spark plugs and wires at the same time as you probably will be ripping a wire or two.
If you are staying stock, dual springs might not be a wise choice. Please check out the following link:
https://www.corvetteforum.com/forums...stock-cam.html

LoneStarFRC

BTR duals (or ANY dual) is WAY overkill for your application.

I recommend you stay with beehive springs and get a set of PSI's LS1511ML springs. Direct replacement and better quality and a slight upgrade, without going to overkill of duals, etc.

PSI is an actual (well respected) manufacturer of valve springs and are available from a number of sources. Their prices won't put you in the poor-house either.

You get to keep your retainers, locks and pushrods. As mentioned, you should take the opportunity to replace your valve stem seals.

I would also recommend you do the Comp Cam rocker arm trunnion upgrade. Definite long term reliability upgrade for not a lot of money.

HTH

http://www.psisprings.com/

Nickr12

Thank you fellas for the quick responses.

Nickr12

Anyone else want to throw their two cents in? Any updates on people's who've changed out their stocks and care to share if they've had any issues?

Cheesecake 07

Psi 1511ml ftw

Nickr12

would you recommend them over the Pac 1218?

vettenuts

I will third the PSI valve springs. Ran them on several cars and they are great springs.

VGLNTE1

The stock Ls6 springs are great if you stay stock. Last for 100k. If you cam then different story. My vote has and will always be dual spring. It's extra insurance if a spring breaks. I don't see why it would be overkill to run them. They come in all sorts of spring rates. Just changed my patriots .650s after 7 years. Went to prc as that is who took over. Same spring from what I read.

Nickr12

everyone has their own opinion...which makes the choice harder lol. I just got off the phone with PAC. They said duals are overkill and recommended 1211x springs.

anyone use those?

LiteraCola

Personally, if you're not upgrading anything else during the spring swap, I would stay with the stock (updated) blue springs. No point ponying up unnecessary cash if the springs aren't going to compliment a cam or anything else. For the price, you can't beat the stock springs. I swapped mine out last summer (I have a March 2002 Z06), did the Comp trunnion upgrade, new seals and titanium retainers, and had zero problems. Just this past spring I did a cam swap, had the heads ported and polished and went with Brian tooley dual springs to compliment the cam/heads combo.

P.S. The Proform spring compressor tool made the job a breeze. Fill the cylinder with compressed air, compress the springs, remove the locks, decompress the spring, remove the spring and seal. Install new seal and valve spring, compress spring, install lock. Rinse and repeat! And the tool makes it possible to compress/swap two springs at a time!


/.02