Posted by Tbone550 on March 26, 2014 at 19:40:46 from (98.249.57.2):
In Reply to: Barn Find, OH COOL!! posted by Bryce Frazier on March 26, 2014 at 06:38:21:
Quoting Removed, click Modern View to see
On the 455 -- those engines were about the lightest non-aluminum big blocks made, had very thin-wall castings. A very torquey engine. They had casting core shift issues with a fair amount of them, most visible in the lifter valley where you could see that the lifter bores weren't centered up on their bosses. I owned one like this, left it stock. This isn't a big deal until somebody decides to try to get high HP out of one and the cylinder bore is thin on one side.
Finally, if you have reason to do an engine rebuild, do the next owner a favor and deal with the engine's inherent oiling issues. Trying to remember exactly what they were now -- maybe not enough oil got to the heads? Or the lifters? An online search would show which passages needed to be bored out.
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