400ex valve springs

[jeryk]

hey i am wondering how much a set of stiffer valve springs would help my four wheeler out.

[tri5ron]

have you done something causing the valves to float?

[arsenal35]

I wouldn't recommend heavier springs its hard on your rockers. I 'm going through that right now on my 416. It has heavy duty kibblewhite springs with stock rockers and it actually destroyed my rockers which in turn started to scar my cam up I wouldn't do it

[jeryk]

ok thanks guys