I do not want to use aftermarket springs and retainers because I have heard of a few people that have retainers breaking. I know it is ok these cams on stock valvetrain but worried about valve springs binding at higher rpm.
thanks

 

i think your confused. do a little more research and report back.

 

You haft to have some serious mis adjustments or gigantic cams to bind a valvespring. IMHO, your fine using stock valve springs and retainers..

But personally i wouldn't i would go with some omnipowers!