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RE: Is this a 390 or 428 By Will - 09/04/2001 11:43:56 AM; IP 24.167.115.16 I am by no means an expert on this, but I think the ONLY way to POSITIVELY identify an FE is to open it up and measure the bore and stroke. They used the same casting molds for all sizes of engines. That's why 352 is at the front of most FE blocks. There are some things to look for, like HP, cross bolts, screw in core plugs, etc., but I don't think any numbers are definitive. Oh yeah, there are casting numbers in heads that tell you what it was cast for, like C80E-6090N means CJ, etc., but still that doesn't tell you the size of the engine. It's true that if you see TP heads, it's probably a 427, and CJ heads on an original engine means it is a 428, but if the engine isn't original, who knows what you've got. Even if the engine is original, I don't think casting numbers wil help. The engine tag may help, but I don't know how to decipher them.

This thread, so far...

Skip Navigation Links.  Is this a 390 or 428 -- John, 09/04/2001 RE: Is this a 390 or 428 -- Will, 09/04/2001  RE: Is this a 390 or 428 -- Mel, 09/04/2001  RE: Is this a 390 or 428 -- John, 09/04/2001  RE: Is this a 390 or 428 -- Will, 09/04/2001  RE: Is this a 390 or 428 -- Mel, 09/04/2001  RE:Q - bird -- Mike McQuesten, 09/04/2001  RE:Q - bird -- Art, 09/06/2001

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