So the reason why we are sort of dancing around the hard facts is because of a fear of increasing demand and pricing for the "best" blocks ? This gets my panties in a bunch to say the least.
I don't see the point in answering 30% of a question on 20 different threads covering the same subject. We know the 500557 block is weak but what about the rest of the castings.
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Dude: Would be easy to take this to the anal level. LOL. Basically there is a really weak casted block late 75 and newer, (reminds me of the 403 Olds units, LOL). Then a decent cast blocks between 71/early 75 and then 3 good cast other blocks 67/74 to choose from for higher hp builds.
But most any of the blocks from 71 thru early 75 will handel 80% of the customers builds.
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Brian and Ken, it would be a great help if you would post the block numbers that you would only use for race applications (high HP builds) and the castings that should only be used for moderate power levels. Thanks for posting the 500557's limitations and hope you will be willing to share the rest of the goodies.
