VTEC Heads

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bectondavis

Member
What is the difference in the head of a b18c and b16a? Both are vtec is one better than the other?

If you are swaping which has the most airflow stock?

Thanks
 
I don't know if I'm in the right area or not. Seems that somebody would have responded but maybe something is going on. Just looking for some ideas.
 
i have heard that the b16 head flows a little better than the b18c head but the b18c head will yield a slightly higher compression ratio. the biggest difference is the cams and the intake bolt patterns, not to mention they are different casts.
 
The flow charataristics are so close that they really aren't worth discussing. If you had built an engine to where that small amount of air made a difference you should have ported the head already.

The biggest difference is the GSR head has 1.1cc smaller combustion chambers.
 
I haven't built the head yet. As you know LSVTEC we have 3 B18B motors. One is gettting port matched as we speak and a shop owes us a VTEC head in which they are giving us a B16! I just didn't know if it was the best. Thanks
 
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