Fnally got the 451 rolling right this fine spring we've been having lately. I was thinking it might be time for a cheap upgrade. so has anyone ever used 1.7 rockers? any limitations to using a really high ratio? and has anyone ever used these before (Link below)? or does anyone know of any other 1.7's? Thanks in advance. also would I have to adjust the cam timing with 1.7 or even 1.6?
http://www.kmjent.com/cart/product.php?productid=369
ps- I have 509 purple cam, the lift would become 577 (with 1.7) I believe.