B head question

[Ten1nis]

I recently purchased a Model B head at an auction. The B is in good comdition. Is it worth my time and effort to change out my A head for the B? Is the compression ratio increase a noticeable performance enhancement? Your thoughts.

 

[jim1932]

Are you talking a model b head (with a "C" on it)? Or a model a head with a "B" on it?

 

[Banky]

My police head with a B stamped on it was TOTALLY worth it! The C head takes a different water pump. IMO I wouldn't use it.

 

[Chuck Sea/Tac]

YES, higher compression wakes the A up!

 

[pat in Santa Cruz]

its not only the higher compression, but that head breathes better too. The result will please you. I've seen too many used heads that were warped. Its worth it to have the head checked for flatness with a machinists straight edge, or have a machinist skim it slightly to see if it is flat, and if not, have it surfaced. Even a modest warp will cause head gasket leakage.

 

[glenn in camino]

I have B heads, big B on the top of the head, on 2 of my Model As. Probably not as good as a 5.5 Snyder head but pretty close.