When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
I mean can it handle high rpm's with the old valves and guides
what do you consider high rpm's .. i have bc spring and retainer and my rev limit is 8k but then again i have aggressive cams .. if you are not cammed that you are wasting your time and putting undo stress on your valvetrain and bottomend as you will not gain a thing powerwise on stock cam going past say 7k