Just wondering, will B16A head and B20 block with compression 11:1, stock internal parts, and I/H/E, and 2200 lbs car weight will be able to beat stock Mazda RX-8 (0-60 or 1/4 miles)? If not be able to beat it yet, what other modification other than force induction? I know there are a lot of other variables affecting the performance but probably anyone with a lot of experience can tell from the information I mentioned above. Thanks.

 

going with a smaller head only raises the mid range, if you are a high revver it wont. if you do some extensive headwork, like port, polish, angle and cfm test then you may but you are looking at some bucks.

 

are you building the car to race your friend?

 

No, I just want to know, how far I need to tune up my engine in order to compete with stock RX-8.