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Lowering Compression Ratio Lowering Compression Ratio
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  • 1 Post By bobcowan

 
 
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Old 07-12-2022, 09:03 AM
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Default Lowering Compression Ratio
I have a nice solid built 427 with 12.5 comp, it runs great but the diet of 110 octane is getting old and expensive while also limiting my range. I don't want to tear it appart to change the pistons are there any aftermarket cyl heads that have a larger chamber, the ones I have on it now are steel low riser's.
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