building a mild Daily driver 318

For a Streeter that spends most of it's life at under 3500 rpm, I will take Compression over flow. 3500rpm is about 38 mph with 2.94s in a 904-first gear. Even with 3.91s, 3500 gets you about 30mph.Your heads could flow 700 and it wouldn't be worth a hoot. But 3 points of compression will pay back big time,all the time, every time.

I agree street cars should look at under 3500 performance since that's where they spend it. Also should try to stretch the powerband as far as possible as long as it comes with little penalties to lower end which would be idle to 5000-5500. I agree with compression but only when the engine is being torn into its not very costs effective performance mod. Cam headers and 4bbl will get the OP to the bottom end of his goal.