When I refreshed my 340 a couple years ago I had the crankshaft magnafluxed and to my surprise they found a hairline crack at the crank pin#8. It was a factory forged piece that had been nicely lightened and balanced to my rotating assembly I couldn't believe it (Scrap
it happens, that crank saw 7000 and a four-speed for over 5 decades. RIP.















