B20 Vs B18

[Jayberg00]

what the difference with the heads, what if i put a ls Head on the B20 block whats the out come what so good about that and what so bad about it

[pdiggitydogg]

heads are the same - same mold
ls cams are a little more aggressive

[Honda_Tengoku]

B20 head has larger valves than the B18B head, and supposedly flows more.

[pdiggitydogg]

well I finally decided to look that up....youre right

33mm int valve and 84mm combustion chamber

[Honda_Tengoku]

and produces better flow numbers! Its the intake manifold that is so restrictive on this engine, obviously designed for torque, efficiency, and throttle response.