Model B head in model A block! Question?

[ratamahata]

Hi guys, trying to figure if is possible use a model A gasket with a model B head in the 1928 to 1931 engine block? Thanks in advance... Leandro

[Simonpie]

The model B is higher compression. To get that, they narrowed up the "triangle" that connects the valves to the cylinder. This means the B gasket has a bit more material between the center stud holes and the edge of the heart shaped opening. Both gaskets should seal, but the A gasket will be backed away from the combustion chamber and leave a crevasse. Maybe not a big deal, but why not use a B?

[Chuck Sea/Tac]

Ford had a special gasket for the B police head. Best used an original gasket and head to make their pattern. I'm .125" bore w/ B head their gasket works great. 509G

[ratamahata]

Many thanks for the replys, in fact the head is marked C on top... correct to the model "B" Ford 32-34 four cylinder engine... compression is 4.6.

[jw hash]

with a B head or a Model A police head you must use a B head Gasket........ , the compression ring around the combustion chamber are different, I have been there and done that.

[ratamahata]

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Thanks guys, they offered me a double o sandwiched copper gasket at a local repo parts in my country...