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Old 10-09-2012, 12:25 PM   #1
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Stock pistons

Going to do a build soon. Will the stock pistons work with the street burner trick flow top end kit? I found a 306 block and complete aluminum pistons(pistons, rods, and wrist pins) for $200. Will this be a good buy?
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Old 10-09-2012, 02:58 PM   #2
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Yes but if you ever want to go forced induction in the future go with forged internals !
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Old 10-09-2012, 05:45 PM   #3
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Originally Posted by 91notchback View Post
Going to do a build soon. Will the stock pistons work with the street burner trick flow top end kit? I found a 306 block and complete aluminum pistons(pistons, rods, and wrist pins) for $200. Will this be a good buy?
The $200 is a good price, but the engine may not be suitable for what you want to do with it.


Find out if the pistons are cast, hypereutectic or forged.
If they are one of the first two I would pass on it.
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Old 10-09-2012, 06:06 PM   #4
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I'm a machinist by trade, and am familiar with castings and forgings. What is the other one? Not questioning anything TH. Just tryin to learn something
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Old 10-09-2012, 08:59 PM   #5
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I'm a machinist by trade, and am familiar with castings and forgings. What is the other one? Not questioning anything TH. Just tryin to learn something


From a web search:
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Hypereutectic pistons are made of an aluminum alloy which has much more silicon present than is soluble in aluminum at the operating temperature. Hypereutectic aluminum has a lower coefficient of thermal expansion, which allows engine designers to specify much tighter tolerances.

They are slightly better than cast pistons and fine for everyday use, but I wouldn't run them in a high performance engine myself.
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Old 10-09-2012, 09:14 PM   #6
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Well I'm running cast pistons in my motor, so far so good , no issues
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Old 10-10-2012, 03:22 AM   #7
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Well I'm running cast pistons in my motor, so far so good , no issues
Watch out for busted piston skirts if you over rev.
302's are known to do that frequently on the older cast piston engines.
The first indication will be a loud knock.
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Old 10-10-2012, 11:44 AM   #8
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Good to know!!!
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