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I was planning on building a pretty mild 451 for street use only. I have access to some 400 heavy main blocks. Any reason not to use one of these blocks? Do they sell for much more than a standard 400 block? I hate to use one, if they are in demand for race engines. Give me your opinion. TIA



If they are the 230(I believe thats the number) blocks
some guys will pay a good price for them... for a
mild street engine, use any good 400 block