Originally Posted by
st pete chad
the valve springs are the dual valve springs that came on the victor jr heads.springs are good for .650
What you have to see if they are for roller or non roller. They come both ways but are much different springs. Maybe the springs are done when you hit 4800?? When boost comes into play, things start acting goofy, where you may not experience it with a N/A set-up
The Vr Jr's I have come with the .650 springs, but for a flat tappet cam