'49-'53 8BA or 8CM Heads
 

Does anyone know of a chart with the compression ratio of all of the '49-'53 stock Ford and Mercury heads? Better yet, is there any particular version that is better than another?

Re: '49-'53 8BA or 8CM Heads
 

Here's some reading for you. Doesn't exactly answer your question, but gives you some history.

Mike

http://myflatheadford.com/know-your-1948-1953-head/

Re: '49-'53 8BA or 8CM Heads
 

EAB or EAC have highest stock compression

Re: '49-'53 8BA or 8CM Heads
 

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.

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.

Re: '49-'53 8BA or 8CM Heads
 

Re: '49-'53 8BA or 8CM Heads
 

Go here to see and download the complete chart----


https://www.jalopyjournal.com/forum/...le-pdf.997315/