Small Block & Big Block Chevy Specific Mouse & Rat Motor Discussion & Conversions

BBC 468 block damage!

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Old 04-15-2007, 07:33 PM
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Default BBC 468 block damage!

What do you guys think? I say it is fixable. Cam broke and came out the back, then got hit by the flywheel at ~7200rpm.






No other questionable damage was done.
Old 04-15-2007, 08:21 PM
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I'm not sure its fixable for a reasonable cost. If its a numbers matching original limited production it might be worth it. But if its just a block you tossed in to get large displacement, find a replacement in the junkyard. Cast-iron blocks are notoriously hard to weld. You can't do traditional cast-iron welding because they warp, I don't know about the powder spray method, that might work but you'd have to have it sprayed, then re-machined to original specs. Cold-stitch MIGHT work but i don't know how well it comes out on a corner like that. Whatever you do if you decide to repair it be sure you get someone who is good at it, the powder spray method ranges from 98% success rate to 98% failure rate depending on the skill of the person doing it. Good luck with whatever you do.
Old 04-15-2007, 08:26 PM
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Well I am off to a good start being I have $0 in it It was given to me by a friend. The oil galleys appear to have not been hit. Looks like just the part that holds the cam plug and some of the cam bearing journal. I wanted to get some opinions.

It's just a truck block, cast in 1979. Nothing special.
Old 04-15-2007, 09:02 PM
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How did the cam break? Did it get hit by a rod or something?
Old 04-15-2007, 09:03 PM
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Not sure what order things happened in. There was 1 broken rod. You are probably right.
Old 04-15-2007, 09:42 PM
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Originally Posted by fergymoto
Well I am off to a good start being I have $0 in it It was given to me by a friend. The oil galleys appear to have not been hit. Looks like just the part that holds the cam plug and some of the cam bearing journal. I wanted to get some opinions.

It's just a truck block, cast in 1979. Nothing special.
I'd look for a new block, truck blocks are a dime a dozen but you might get lucky and find it economical. Ask a couple shops. Just be careful don't put a ton of money into a rotational assembly if the guy who repairs it doesn't seem too confident in the repair.
Old 04-15-2007, 10:52 PM
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.

4 bolt or aftermarket time, like they say, that is a tough place to repair, and even someone with great skill can't promise it will come out 100% fine. Sorry, but my opinion not worth the chance.
Good luck.

.



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