Well is it possible? Can b18b1 valves fit in a b16 head? I ask becuz i think i bent most of my valves on my b16 on my lsvtec swap. And i still have the LS head laying around and i dont wanna buy a new head or pay for valves. Im broke right now.

 

Hmmm... LS valves compared to B16A valves: Stem width is too big, stem length is dramatically different and valve face diameter is smaller on the Intake side.

I would call that a "NO".

I guess anything can be done if you spend enough money, but in this case, making LS valves work in a B16A head wouldn't be cost effective... and it would adversely affect performance.