[bergy]

Vega 390 aluminum blocks were low pressure die castings produced at Messina, NY. You probably know that the bores had to be acid etched after machining to remove the aluminum matrix and expose the silicon grains for enhanced wear and lubrication. The BB 390 alloy block would have been gravity cast - the matrix wouldn't have been as well refined as a low pressure casting - wonder how they held up in racing? I don't recall any feedback on this?