340 .040 Bore Okay?

pishta said

Thanks! That is the FIRST first-hand knowledge of this suffix purpose from a foundry member here. Ill gladly take this as fact now and PS my post.

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I have sonic tested many blocks over the years. The only and by only I mean ONLY consistent factor is the inconsistency of these blocks.

I have never even a correlation between casting numbs like that and lower series of numbers being better. Not once.

Since I did the testing myself, I call BULLshit on all of that.

And I did enough of them to see a trend if there was one.


EDIT: the only caveat to that is the early 360 blocks that were poured from 340 tooling. And I say you still sonic test everything because Chrysler was never perfect about stuff like that. That’s how you can have an early 72 model year Demon with a complete 68-71 340 in it. BTDT