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rambler454 08-01-2012 04:26 PM

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

GMCBEAST 08-01-2012 06:15 PM

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.

rambler454 08-02-2012 08:20 PM

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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