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06-13-2016, 05:45 PM | #1 |
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Is there adifference between an "A" or "B" head gasket
Due to a supplier mix up I think I will be receiving a head gasket for Model B instead of a Model A. Is there a significant difference between the two?
Thanks again for all of your help. |
06-13-2016, 07:42 PM | #2 |
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Re: Is there adifference between an "A" or "B" head gasket
Our newly produced one does both plus hi comp heads, copper
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06-13-2016, 08:33 PM | #3 |
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Re: Is there adifference between an "A" or "B" head gasket
I use a copper "B" gasket on my high compression "A" head with "A" block. I think it is the ideal combo! Ron W
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06-13-2016, 09:10 PM | #4 |
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Re: Is there adifference between an "A" or "B" head gasket
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06-14-2016, 02:14 AM | #5 |
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Re: Is there adifference between an "A" or "B" head gasket
I have a B block with an A head. Which gasket would I need?
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06-14-2016, 07:30 AM | #6 |
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Re: Is there adifference between an "A" or "B" head gasket
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06-14-2016, 08:16 AM | #7 |
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Re: Is there adifference between an "A" or "B" head gasket
It is a stock A block with a stock head. I guess I will just refuse the shipment and re- order from another supplier. Thanks guys, you are the best.
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06-14-2016, 09:01 AM | #8 |
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Re: Is there adifference between an "A" or "B" head gasket
Sooo, what is the difference between A and B head Gaskets?
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06-14-2016, 09:41 AM | #9 |
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Re: Is there adifference between an "A" or "B" head gasket
The original B gaskets have a narrower than A "waist" area between the valves and the cyl. This made the gasket hang out into the A combustion chamber, not good. Not sure about modern B gaskets. The gasket must fit both the head and the block.
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06-14-2016, 10:23 AM | #10 |
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Re: Is there adifference between an "A" or "B" head gasket
Not sure why, but Snyder's instructions with their 5.5 A head say to use a B gasket.
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06-14-2016, 10:48 AM | #11 |
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Re: Is there adifference between an "A" or "B" head gasket
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06-14-2016, 11:07 AM | #12 |
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Re: Is there adifference between an "A" or "B" head gasket
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06-14-2016, 03:14 PM | #13 |
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Re: Is there adifference between an "A" or "B" head gasket
The A gasket can overhang the chamber around the valve area on hi comp head , not ideal , A B gasket does not , don,t ask how I know , check when installing 1st , just cause it fits the block does not mean it fits the head,
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06-14-2016, 05:03 PM | #14 |
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Re: Is there adifference between an "A" or "B" head gasket
Use a model A gasket and plug the steam holes in the middle of the deck.
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06-14-2016, 05:23 PM | #15 |
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Re: Is there adifference between an "A" or "B" head gasket
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06-14-2016, 08:01 PM | #16 |
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Re: Is there adifference between an "A" or "B" head gasket
quickchange is dead on.
If any part of the gasket hangs into the combustion chamber, it will burn up and fail early. The B gasket is scalloped out better around the valves to match the high compression heads, which have relief around the valve area for better breathing. To run correctly , a motor needs 1. compression (head) 2. breathing (valves and cam) 3. timing (dizzy) these 3 areas need careful attention The dynamics of a running motor must be taken into account carb is easy compared to above......
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06-14-2016, 10:11 PM | #17 |
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Re: Is there adifference between an "A" or "B" head gasket
James NO its a hi comp head ,cast snyders have less meat around back of valve area & normal felpro A will overhang, may not blow but will make engine sound harsh, I know , been there done that , do agree about blocking the two holes , but if using the B or our new one no problem,
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