Mach 1 Actual Compression Ratio?

[sakman84]

Which is correct literature or website? I'm inclined to say literature.

Apologies if this has been covered already. I also pulled 2020 literature for Bullitt and that is rated 12.0:1 in literature.

2022 website

2021 website

2021 technical specs document (notice 12.0:1)

2021 Mach 1 track supplement manual

2020 technical specs document, notice Bullitt and GT 12.0:1

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[murick]

I am not going to copy all the pages here, but if you have a look at pages 335, 336, and 337 in the Owner's manual (https://www.fordservicecontent.com/...-Owners-Manual-version-2_om_EN-US_03_2021.pdf)
you will find tech. spec for both Mach 1 and "regular" 5.0L engine, which look pretty authoritative .

 

[MrXXX0]

Compression Ratio is 12.0:1 across the Coyote range since 2018.

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