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08-18-2019, 02:58 PM | #1 |
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"B" on top of Model A Ford cylinder head
I just bought a Model A Ford "cylinder head" at the Springfield, MO swap meet and it has a letter "B" on top of the head about an inch tall. No other markings. One guy told me it might be a "high compression" head. Does anyone know what the "B" stands for. Thanks
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08-18-2019, 04:04 PM | #2 |
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Re: "B" on top of Model A Ford cylinder head
It is a higher compression had made by Ford for the police and emergency type vehicles. I believe it’s 5.2 ratio.
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08-18-2019, 04:04 PM | #3 |
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Re: "B" on top of Model A Ford cylinder head
Ford came out with a high compression head for the Model A. Originally it was sold to police departments and became known as a Police Head. Later it was released to the general public. In order to identify it the letter B was placed on top of the head. Over the years this has caused a lot of confusion as in 1932 when the Model B was released (and through 1934) the heads had a letter C on them.
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08-18-2019, 05:22 PM | #4 |
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Re: "B" on top of Model A Ford cylinder head
Get it magnafluxed before using it,they are prone to cracking,excellent combustion chamber design.
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08-18-2019, 05:37 PM | #5 | |
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Re: "B" on top of Model A Ford cylinder head
Quote:
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08-18-2019, 05:48 PM | #6 |
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Re: "B" on top of Model A Ford cylinder head
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08-18-2019, 05:57 PM | #7 |
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Re: "B" on top of Model A Ford cylinder head
Also a late B called a "C" grind cam. .319 measured lift.
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08-20-2019, 03:13 PM | #8 |
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Re: "B" on top of Model A Ford cylinder head
yes it is 5.2 compression.
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08-20-2019, 03:47 PM | #9 |
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Re: "B" on top of Model A Ford cylinder head
This is why I have been calling it :
"The Police head with the large B" ... for more than 50 years. (5.2 to 1) "The head with the large "C" for the other one. (4.6 to 1) Last edited by Benson; 08-20-2019 at 03:53 PM. |
08-20-2019, 07:56 PM | #10 |
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Re: "B" on top of Model A Ford cylinder head
And "C" does not mean it has a counter balanced crank.
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