: Value-Springs question



Luna.
03-09-09, 04:51 PM
EDIT--The title should read, "VALVE", not "VALUE". Apologies.

I was recently told that the stock valve springs could EASILY handle 6,600 RPM, as they are intended to handle about 6,800 RPM. This is about 400 more RPM than the rev-limiter currently lets us spin our Vs to.

Since many of you are much more experienced than I am in this area, I wanted to get some thoughts.

Personally, I'm auto-nervous about increasing the rev-limiter that comes from GM, but it does seem to make some sense that the valve springs can handle at least 6,600 RPM.

Thoughts?

wait4me
03-09-09, 05:23 PM
I would say that is correct. I did not see any valve train issues all the way up to 6800 rpms. But power dropped off on the way up. Remember we have a TINY TINY cam in this thing.

As soon as we figure out the fuel issue of not enough pump then i will be doing a head/cam swap and getting rid of the restrictive head flow design. I know they just wanted to make it idle smooth, but to put a swirl maker in the intake reallly hurts flow / horsepower.

Luna.
03-09-09, 06:12 PM
....

Luna.
03-09-09, 06:12 PM
Thanks for your thoughts.

Do you believe there is any benefit to spinning it past 6,200 RPM or just a wash/a loss due to the decrease in power??

It definitely seems like it will easily spin that fast, but I'm not certain as to the power from 6,200-6,600.

thebigjimsho
03-09-09, 06:17 PM
I heard Luna was on the receiving end a lot of swirlies in school...

wait4me
03-09-09, 07:59 PM
Power increase and better quarter mile times will be had if you shift at 6300.

thebigjimsho
03-09-09, 08:30 PM
sounds good.