Re: 478 GMC V6 Forged pistons
A couple thoughts from a potential 478 builder:
With CNC equipment becoming far more common, billet pistons aren't as big a deal as in the past. Pullers are knocking out similar slugs.
Aircraft engines in 5.125 and 5.250 (any sonic check data out there?) aren't uncommon and lower cost pistons pop up a lot. Of course pin height and size are off, but if offset grinding the crank and swapping lighter/stronger rods, one may as well get the 550 inches or more.
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