Runner Volumes

[stealy perf mach]

greg
i went to the pri show, for the most part, to talk to bruce about this subject, myself and brian tilburg talked to bruce in detail about using the superstock specs which we both felt was a really bad idea for the majority of the racers!! i have cc'ed alot of heads and have seen a large range of numbers on the same head, {example } a 462 casting, one intake port was four cc's bigger than the port next to it if you ask gm, ford ,chry, if they have port specs the answer is NO! there is to much core shift in the older heads.it's easy to set port volumes on superstock heads with the epoxy! with opening up the valve and valve job rule, alot of heads are going to be over because of undercut stems,steeper bowl cuts etc. alot of heads are going to have to be cut or replaced, boy did they really open a big can of worms.
people, you just need to call bruce and voice your opinion!! big is not always faster but the whole idea was not have to go through the trouble to pour the stockers runners. but hey what do i know i only build these engines for a living. its just going to raise the price of stocker heads which is already out of hand. .a easy fix is to just give a three to five cc over the superstock specs, how much simpler can that get, if the superstock guys whine than let them whine !!