WADDISME

iTrader: (4)

Broken spring in #8. Car is road raced about once a month and is a daily driver the rest of the time. Cam is the Texas Speed Magic Stick 3 237/242 .603"/.609" Camshaft with TFS 225 heads (rest of mods in sig) and YT rockers. I got 20 track days and 1 1/2 yrs out of TFS springs before breaking one. A lot of choices. Are the BT racing spings overkill? Here is a for sale thread with the most choices:

http://forums.corvetteforum.com/c5-p...-kit-sale.html

TIA:thumbs:

chevybayboy

iTrader: (6)

I'm about to order some Brian toley max springs I hear nothing but good thing about them they said there the ones they recommend when you have aftermarket rockers

Tainted

iTrader: (9)

They are a great piece and they should work well for what you are doing.

TVWilkes

PRC .650 lift spring kit fron TSP. This will work very well in your application.

Mez

iTrader: (1)

Talk to the mfg of the cam for the best advice.

WKMCD

iTrader: (2)

FWIW: I've been tunning PAC 1521's for a while now. Nitrited for very long life. I'm still using the same set I had in my 403 build and now in my 427. I've run cams with .660 lift and after about 12k miles they still tested within 1 or 2 pounds of new specs.

WADDISME

iTrader: (4)

Ordered a set of just springs and seats from Brian Tooley racing after talking with him. Will try to get them on this week. Will do the complete kit repl next year as this will be an annual thing for me due to severe tracking use. Thanks for the input.

John Boos

I think 20 track days is a lot of rpm time for a set of springs. They did good.

Sales3@Texas-Speed

iTrader: (2)

Ill second the PRC .650s, we recommend them anyway for the MS3, and have several others working flawlessly in similar applications to the op.

WADDISME

iTrader: (4)

Actually, I started to order the Lunati .650 doubles as they are on sale for $215, but I was concerned about them being too stiff for my YT rocker arms. I have the newer version of the YTs that are thicker, but now I may need to rethink this whole valvetrain. For now I am committed to the Trick Flow heads and the MS3 cam. Hopefully annual spring change will be enough.

TurboBuick6

iTrader: (2)

The PAC-1207X are used in a lot of road race engines with great success. These guys turn over 7500rpm.