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08-08-2019, 12:47 PM
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Jim Brierley
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Join Date: Jun 2010
Location: Temecula, CA
Posts: 4,088
Re: Information Wanted:
The first number on Winfield heads indicate the original compression ratio but it's a good idea to cc the head to find what it is now. Compression won't hurt the engine, detonation will, so don't use too much spark advance.
Jim Brierley
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