Quote:
Originally Posted by Libertad
Yeah it sure did. I wonder what caused it? Guess it doesn't really matter now.
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I've seen it many times before. It spun a rod bearing and overheated the big end of the rod to the point it got weak and came apart. It will sometimes take out the rod next to it.
The intake valley looked pretty sludge free so it was most likely not a lack of oil changes that caused the bearing failure and you say the bore was pretty clean so it probably wasn't high mileage that did it in. Water in the oil from a bad head gasket, leaky intake or a cracked block / head could have caused the excessive bearing wear so it could spin a bearing and seems like the most likely candidate.
I wouldn't use the heads or intake from this engine on anything else until they pass inspection at a machine shop and have been resurfaced at the least.
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miSSed opportunity - ground up creation of an AWD 1994 454 SS that never was
http://67-72chevytrucks.com/vboard/s...d.php?t=795577
69 C10 shortbed stepside 400 small block - built like what a super sport truck could have been
69 K20 lwb TBI 350 4L60E NP208 14-bolt Dana-44 w/disc
68 Camaro SS / RS 500hp 439 inch roller cam big block 4L80E
79 Malibu TPI 350 4L60 w/ Z28 steering & sway bars