I wondering what the difference was between the 90-91 b18a1 and the 92-93 b18a1 engines except the 8 hp gain and non-OBD, and OBD1 differences. I have both of them but the 91 engine has less miles on it so I would rather use that block.
_______

 

Use the one that's in your car now, damnit.

 

I just might use the b18b head with my old intake manifold.

 

i belive the differences in power come from the ECU, cams and exhaust manifold design. also some people mentioned the intake manifold is slighty dirffrent between the two....but i'm not to sure about that one....

both heads are identical......