Ok So what give my 049 oval ports on our site say they are 113cc but on mortec they are 120cc. I didn't check when i had them off like a dumb arse. Anybody with 049's know what they are. Mine are milled and i know they are smaller then 120 now but just wondering what they started off with.

Sorry, the dam things vary all over the place!!

Some are down around 113 and others are up at 122 so we have to cc them to know for sure!

The early closed chambered heads are way closer as to spec'd cc's than the later open chambered heads!

pdq67