We had a 355 with a 144 Holley blower expire on the dyno, lots of blowby. It seems it busted 2 of the stock cast pistons. We built a blower motor and installed it in his car, no more blowby.
"For those that will fight for it...FREEDOM ...has a flavor the protected shall never know."
Semper Fi! L/Cpl Edwin L. "Tim" Craft, B Co 3rd AT's, Khe Sanh Combat Base, February, 1968