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Old 08-17-2013, 09:18 PM   #1
Ten1nis
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Default B head question

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.
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Old 08-18-2013, 06:44 AM   #2
jim1932
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Default Re: B head question

Are you talking a model b head (with a "C" on it)? Or a model a head with a "B" on it?
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Old 08-18-2013, 08:37 AM   #3
Banky
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Default Re: B head question

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.
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Old 08-18-2013, 12:54 PM   #4
Chuck Sea/Tac
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Default Re: B head question

YES, higher compression wakes the A up!
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Old 08-18-2013, 06:23 PM   #5
pat in Santa Cruz
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Default Re: B head question

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.
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Old 08-18-2013, 07:42 PM   #6
glenn in camino
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Default Re: B head question

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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.
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