You have no idea what ur talking about. this is the wrong forum for this post anyways. The b20 block has more displacement ( I.e. Different stroke and bore..i believe a 84mm bore?), BUT the cylinder walls are ALOT thinner than a b18b1 or b18a1. The b18b/a have a 81.5mm bore and i think i shorter stroke than the b20. You can bore out the b18 to reach a higher displacment without having to worry about the stock sleeves( only to a certain size.) Some say b16 heads are better for whatever reasons, but i think its been proven that the p72 head flows better and gives better overall performance. I also am not 100% on these facts so read this:..Originally Posted by Siverprobegt
would a b20 ,with a b16 head(no rods or piston upgrade) hold up,or it will throw a rod,etc, after some time..
http://forums.importatlanta.com/showthread.php?t=29785
that will hold all your answers.
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