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Old 06-11-2020, 09:46 PM   #1
alanwoodieman
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Default Re: '49-'53 8BA or 8CM Heads

EAB or EAC have highest stock compression
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Old 06-12-2020, 12:50 AM   #2
40 Deluxe
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Default Re: '49-'53 8BA or 8CM Heads

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Originally Posted by alanwoodieman View Post
EAB or EAC have highest stock compression

EAB yes, but not EAC! EAC are Mercury heads, which have significantly larger combustion chambers to keep the compression down on the larger 4" stroke Merc engines.
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Old 06-12-2020, 08:07 AM   #3
Zeke3
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Default Re: '49-'53 8BA or 8CM Heads

There is a table in Joe Abbin's book, "Ford & Mercury Flathead V-8 Identification and Rebuilder's Guide" that shows the characteristics of all the stock cylinder heads, table 7-1 on page 7-3. There are seven different cylinder heads listed for the third generation flatheads.
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