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Old 01-09-2007, 11:13 AM
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Cobra Make, Engine: CSX 4000; Shelby aluminum FE with 58mm IDAs
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I believe that the typical 557 that Eric at PE builds uses a "seasoned" iron 460 block (at least that's what I discussed with him, and that's what the spec sheet I received from him indicated).

Quote:
Originally Posted by Anthony
Is the 557 based off of a stock block, or an "aftermarket motorsport" block ?
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