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Old 02-17-2003, 05:22 PM
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Post 283 heads

DID All 283 come with good high perf heads and were most of them camle hump are they good. I have some 461x are they high perf and what are all the other high perf that came on the 283's. THANkS ALOT.

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Old 02-17-2003, 05:57 PM
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All 283s had small valves and small combustion chambers. The heads were progressively tweaked until the engine was discontinued in 1967. There are some factory, 283 heads that have the same type of combustion chamber as the 186 or 462 cylinder head. Many people call the original 283 heads the "power-pack" heads, as the early 283s with four barrells and dual exhaust were called the "power-pack" option, hence the term "power-pack." I'm not real familiar with the orignal casting numbers of the 283s, but your 461x heads will be far superior to any of the 283 style heads.

[ February 17, 2003: Message edited by: NAIRB ]</p>
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Old 02-17-2003, 06:16 PM
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Heres a link to some casting numbers. But 99% of the 283 heads you see will be either 3795896 or 3854520 castings. Both are the power pack heads with small valves. HTH

http://www.geocities.com/MotorCity/5654/chdcast.html
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