Thread: Is this a P.I. block?
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Old 04-09-2003, 01:23 PM
Traveller Traveller is offline
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Join Date: May 1999
Location: Tyler, TX U.S.A., TX
Cobra Make, Engine: ERA, Ford 428 SCJ
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I don't believe the PI had the extra ribs, only the CJ.

The only thing that designated the the 428 a 'PI' was the PI intake mannifold.

Please feel free to correct me if I'm wrong as I don't have my FE bible handy.

And of course, a CJ can be identified by looking for the extra ribs cast in the main bearing area, or more easily by looking for the large, roughly cast "C" on the back of the block.
Last edited by Traveller; 04-09-2003 at 01:27 PM..
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