Thread: Announcing New Kirkham Billet Aluminum 427 Block
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Old 02-22-2007, 04:01 PM
rphubbard rphubbard is offline
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MRMAX,

The reason Ford did not go with the aluminum block on the 03 Cobra was it could not pass Ford's own durability testing. I saw several aluminum blocks fail and also the powdered metal rods failed. That is why the engine went with cast iron block and forged rods.

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