What caused this?

[x Baldwin Motion]

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This is always a area of concern on my 68 327 L-30...In 68 the L-30 uses a pressed on balancer with NO bolt..The crank is not even drilled for one...Kind of scary on the top end..I guess I'll know when it decides to part with the crank...


Steve

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<font color="blue">I have 3 early 327 cranks. I have drilled &amp; tapped all of them.
I would never take the chance after all these years
of having it launch through the radiator, tires, hood, firewall, etc. @ 8000+ rpm. </font>

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THERE IS NOTHING LIKE SOMETHING COMING LOOSE AT SPEED. STILL A TEENAGER, I MUST'VE HURRIED THROUGH AN ENGINE SWAP A WEEK EARLIER WITHOUT COMPLETELY TIGHTENING THE RADIATOR. SATURDAY NIGHT ON OCEAN PARKWAY AT ABOUT 75MPH, MY 65 IMPALA SS VERT 4SPD LAUNCHED THE RADIATOR INTO THE FAN, IT WAS JUST A FIZZING SOUND, LIKE TIN CANS IN A BLENDER. COULDNT SEE THE CAR BEHIND ME, NOTHING BUT STEAM ASTERN.
SINCE I WAS ON THE PARKWAY, I COULD NOT USE MY OWN WRECKER AND PAID TWICE AS MUCH FOR THE TOW AS THE REPLACEMENT RADIATOR.
I ALWAYS CHECK MY NUTS (AT LEAST) TWICE NOW.