01-04 mustang gt compression ratio

Emiliopac123

New Member
Aug 8, 2021
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Los Angeles
Hey guys just had just needed some help finding out what the stock compression ratio is for our cars im doing a forged bottom end but have had trouble find out what stock compression ratio our cars had to get a piston dish that will hopefully get me close to stock compression . So far i have seen 9.4:1 and 9:1 and even 9.7:1 but nobody has a solid answer as what it is anything would help at this point thank.
 
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manicmechanic007

Active Member
Sep 26, 2017
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9 to 1 - 9.3 is factory ratio
Ford has conflicting info on this as they have had for years
Goes way back 1970 4bbl 429 is listed at 10.5 to 11.0 ;1 ratio
I am with Nightfire and would not spend money building a motor that had less than 10 to ones in it