Just wanted to share this info... I successfully used Chevy IRL valve springs to rev to 10k with a set of high loft cams successfully on a b-series head for a 3 hour track test the other day. I had significant high end gains but lost a little torque coming out of the turns. If any of you drag peeps use these let me know. I want to compare data etc...


Thanks,

Larry Littleton
H1/SPU