I have an LS bottom but no head. I need a head and want to know what my best choice is. i dont want a vtec head because of the high compression and they are pricey.
so far i think my choices are:
* B18A head - i dont know if that will work and what the compression will be
* B18B
* B20 - also dont know if that will work and what the comression will be.

which will be my best choice for compression, availability and price

 

they are all pretty much the same thing. I would just get the B18B head, so you dont have a million miles on the valvetrain like a B18a head would have. B20 casting is the same thing as the B18B casting

 

Head's dont raise compression by that much your using ls pistons you'll be fine slapping a Vtec head. Ls are like 9:1. Im using 83mm pistons and a gsr head 9:1 arias pistons.

FOr turbo go with a vtec head or non vtec. Just make sure you got the right fuel/air mixture and its tuned.

 

one of my rods is bent on the block i got. it was used for turbo before, so i might have to get new rods and or pistons. is there any cheap alternative to stock pistons/rods that will lower my compression.

 

Just buy used LS rods and pistons. and drop it in. but aftermarket is the way to go.