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Old 08-01-2012, 05:26 PM
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283 with heads

i got a 283 and heads were separate and i can't find the casting number online anywhere. they say 378450?

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Old 08-01-2012, 07:15 PM
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Are you sure they don't say 376450? If they do they are mid/late-70's to early 80's 265/305 heads if I'm not mistaken. Had a set myself and I think mine were off a 265. Small valves and combustion chamber. Try googling 376450 as I'm just going off memory and it's been 10 years at least since I had those heads. Hope this helps.
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Old 08-02-2012, 09:20 PM
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I've heard Vortec heads are bad about cracking? I need to send the engine to a machine shop. anyways any ideas or engine combo's like pistons and such would make a good street engine?
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