spf_lexus
Active Member
I gave that some thought too. When I drove David's SC 4.7 with 1uz heads I thought that setup breathed rather easily, of course thats coming from feel and no real flow measurements. I am confident the heads can handle 4.7L and i'm only adding 3/10th of a liter. Also, David had stage II cams that helped air in/air out. I though tthe 1uz heads flow more than the 2uz heads?