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Old 04-11-2021, 09:33 PM   #7
Pete
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Join Date: May 2010
Location: Wa.
Posts: 5,409
Default Re: Highest Reliable Compression Ratio

For what it is worth, I ran a little over 10 to 1 on a babbit engine for about 7000 miles. The bearings were still like new when I sold it. There were 2 hill climb meets on it besides the usual street driving. It had a Dan Price head and a 404A radius lifter cam.
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