Not Ranked
All the PI blocks I have seen have extra ribs and are solid lifter blocks... As have a number of non 427, non CJ and non PI blocks I have seen.
My point is Ford did some pretty cool stuff in the 60's.. You really need to base your opinion on what you are looking at. I ran across a hydraulic cam 390 that was obviously pulled out of the 427 engine line it had the bosses for a cross bolting that were left undrilled, higher nickle content, extra ribs but was a 2bbl car. Very cool.. Also very confusing..
Although my intel has a C6ME-A as a 428 CJ. PI blocks from 66-70 should be C6AE-B or F.. That isn't to say it wasn't in a police car.
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michael
A man that is young in years, may be old in hours, if he have lost no time. But that happeneth rarely. Generally, youth is like the first cogitations, not so wise as the second. For there is a youth in thoughts, as well as in ages... Sir Francis Bacon (1561-1626)
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