4,200 spring, moment of weakness...

[mhuppertz]

So, since I have fuel galore now, is a moment of ebay weakness I bought a 4,200 spring. It was cheap, but now I will have to get 60lb springs right? Shoulda thought it through, but I occasionally bang against the 3,200 spring and probably need 60lb valve springs anyway don't you think?

[Jklawinsky]

Pushing 3200 is nothing to worry about, but if your planning on going up to 4200... I would def change out the valve springs on both sides. I wouldnt go over 3500 without changing anything.

[oldestof11]

How do the P pumpers do the 4k GSK on stock valve springs?

[Jklawinsky]

You can do it without the beefier springs... I would throw em in there for peace of mind. I think p-pumpers have the same springs and they changed them in the 24 valves.

[kpshc707]

i have 4200 spring and have got it to 4k with stock valve springs i have #60 valve springs just need to get of my lazy but and put them in i think i had to clip the 4200 spring to get it to fit too