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Search: Posts Made By: Dave in MN
Forum: Model A (1928-31) 05-19-2021, 01:02 PM
Replies: 62
Views: 20,891
Posted By Dave in MN
Re: High Compression Head Review

On the average, from my dyno running of engines, the 6:1 will produce about 2 hp more than the 5.5:1 head. Not lots of difference but close to 5% more hp.
Good Day!
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