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Search took 0.00 seconds. Search: Posts Made By: tubman
Forum: Early V8 (1932-53) 07-11-2018, 10:51 AM
Replies: 20
Views: 12,146
Posted By tubman
Re: Difference between Mercury *CM and EAC heads

My advice would be to measure them all, with the possible exception of heads you positively know are new and unused. It's been over 50 years since these heads have been made and I would bet that a...
Forum: Early V8 (1932-53) 07-09-2018, 06:58 PM
Replies: 20
Views: 12,146
Posted By tubman
Re: Difference between Mercury *CM and EAC heads

Boy, every specification I have seem for '52-'53 Mercury's lists them at 7.2:1 compression ratio, the same as Fords. I realize that since they were for the 4" stroke, they weren't as good as the...
Forum: Early V8 (1932-53) 07-09-2018, 05:48 PM
Replies: 20
Views: 12,146
Posted By tubman
Re: Difference between Mercury *CM and EAC heads

Really? I thought 8CM's were 6.8:1 and EAC's were 7.2. Are they that far off or do I have some bad information?
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