[1BAD68"S"]

okay so its time to make the heads breath a lil bit better. they are stock and i will be looking to go with the max lift cam for my small block,it is a 30 over motor that just recieved a "freshining" as the motor was already rebuilt 15 years ago but the idiot forgot intake manifold gaskets and took a little water in a few of the cylinders during break in but suffered no mechanical damage. i decided to do a simple bottle brush job and fresh rings and bearings and new arp hardware but i want to keep the iron heads(yes im an idiot)and make the most of them until i decide its time for the aluminum heads. what would be a safe limit for the valve sizes keep in mind i dont know much about the olds heads but i know they suffer from very low flow numbers...this would be a different story if it was a chevy...those are easy