The Ford Barn

21stud · 01-18-2025, 12:40 AM

Chart has a typo about 41T head volume. I've measured those, came out around 82cc if my memory is correct.

Chamber shape is worth noticing though. It's much deeper at transfer area than any other Ford head but shorter towards piston. that is, similar to famous 81AS but real deep.

If someone would like to go milled and filled route to get real cheaters, these might be good for that?

38 coupe · 01-18-2025, 10:38 AM

Does anyone have the original excel file? Like many others I have saved the pdf, but would love to have the spreadsheet it was printed from.

glennpm · 01-18-2025, 11:18 AM

Quote:

Originally Posted by 38 coupe

Does anyone have the original excel file? Like many others I have saved the pdf, but would love to have the spreadsheet it was printed from.

Hi Fred,

I'll put it together.

Glenn

glennpm · 01-18-2025, 01:31 PM

Here is the table data in Excel format:

https://www.dropbox.com/scl/fi/chuty...=m1921od0&dl=0

Glenn

38 coupe · 01-18-2025, 07:24 PM

Thank you Glenn!

glennpm · 01-19-2025, 07:49 AM

Sponsored Links (Register now to hide all advertisements)

You're welcome!

I've updated the spreadsheet, linking from and to the two instances for 41T heads within the preface and the column descriptions on sheets #8 and #10.

https://www.dropbox.com/scl/fi/chuty...=m1921od0&dl=0

Glenn

01-18-2025, 12:40 AM	#41
21stud Member Join Date: Jun 2015 Location: Finland Posts: 77	Re: Flathead V8 Compression Ratios...6,020 choices Chart has a typo about 41T head volume. I've measured those, came out around 82cc if my memory is correct. Chamber shape is worth noticing though. It's much deeper at transfer area than any other Ford head but shorter towards piston. that is, similar to famous 81AS but real deep. If someone would like to go milled and filled route to get real cheaters, these might be good for that?

01-18-2025, 10:38 AM	#42
38 coupe Senior Member Join Date: May 2010 Location: South Texas Posts: 2,040	Re: Flathead V8 Compression Ratios...6,020 choices Does anyone have the original excel file? Like many others I have saved the pdf, but would love to have the spreadsheet it was printed from.

01-18-2025, 01:31 PM	#44
glennpm Senior Member Join Date: Sep 2014 Location: Mid-Coast Maine Posts: 2,815	Re: Flathead V8 Compression Ratios...6,020 choices Here is the table data in Excel format: https://www.dropbox.com/scl/fi/chuty...=m1921od0&dl=0 Glenn __________________ Archives of historical but relevant older articles: ------------- Hover mouse over the links below and click! ~~~~~~~~~~~~~~~~~--------------- Rumble Seat's Notes Techno-Source-for-the-1932-thru-1953-Flathead-Ford Last edited by glennpm; 01-19-2025 at 07:51 AM.

01-18-2025, 07:24 PM	#45
38 coupe Senior Member Join Date: May 2010 Location: South Texas Posts: 2,040	Re: Flathead V8 Compression Ratios...6,020 choices Thank you Glenn!

01-19-2025, 07:49 AM	#46
glennpm Senior Member Join Date: Sep 2014 Location: Mid-Coast Maine Posts: 2,815	Re: Flathead V8 Compression Ratios...6,020 choices Sponsored Links (Register now to hide all advertisements) You're welcome! I've updated the spreadsheet, linking from and to the two instances for 41T heads within the preface and the column descriptions on sheets #8 and #10. https://www.dropbox.com/scl/fi/chuty...=m1921od0&dl=0 Glenn __________________ Archives of historical but relevant older articles: ------------- Hover mouse over the links below and click! ~~~~~~~~~~~~~~~~~--------------- Rumble Seat's Notes Techno-Source-for-the-1932-thru-1953-Flathead-Ford

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