Valve Spring Question

[franknitticutlass]

Would I recieve any HP, RPM Range, or anything if I upgrade my valve springs? What would I upgrade my springs to? I have a stock 350 76cc chambers. 1.94/1.50 valves

 

[81Regal]

I would doubt it unless your springs are very worn or you swap a cam in to match the spring rate.

 

[madmaxstyle]

in theory tighter valve springs allow higher RPM by increasing the valve float threshold. The most you could get would be a little higher RPM before the motor bounced off red line. By increasing the RPM range your potentially able to get more out of the higher end of things by producing power beyond its previous cababilities.
If you like to push the motor past 6000 all the time this would be a good upgrade. Dont think they give you more power though in terms of HP or Torque, just allows you to make better use of the powerband range.

Thats really all I know about upgrading valve springs......