[campracing]

i am thinking of doing some port matching or gringing

what size are the vavles on a stock set of 305(601) heads and can i get a head shop to put in bigger ones

also what is the best thing to do the grinding with

 

[eloc431962]

Take them to someone who knows what they are doing or buy a book and read and learn. Me i would get another set of heads. JMO. Cole