Head casting # to compression ratio?

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Posted by chriscase on Wednesday, September 03, 2008 at 13:08:56 :

In Reply to: OT (sorry)...too good to ignore, though posted by APB in tropical NY on Wednesday, September 03, 2008 at 12:16:19 :

I find very little info on the various head casting numbers vs compression ratios of the Dodge flat heads. Perhaps the 218 heads were smaller/higher- they ought to be if the extra 12 cubic inches of the 230 made the same compression ratio. About .3 maybe?

I've found one rebuilder's catalog on the net that gives about six numbers, but have also found numbers not on that list.

Also, OE head thickness, before anybody milled it?

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Sorry, posted in wrong place. - chriscase 13:13:42 09/03/2008

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