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Identifying blocks
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Pat Curran
im looking for help identifying two unique blocks and establishing correct values on each. One block has dual port intakes attached to the drivers side, the other has tubes passing thru the block to the drivers side. Any help greatly appreciated.
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Pictures would help. What are the casting numbers on the side of the block?
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Sorry I didn't scroll down far enough.
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Both are attempts to modify a stock block to get better gas flow for more power. Broadwell is probably the best known modifier of the blocks for better gas flow. I have uploaded some PDF files of his directions on building engines and sports cars. Look especially at the 8portCrosley.pdf file and EvenmorespeedCrosley.pdf.
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Jim...
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Butch
The first block, with the flanges on it, is a standard Cast Iron
block, interestingly modified to cross-flow configuration.
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The second block, with the tubes on it, is an early, transition/conversion block. Notice that it has a thin base flange and a flat, non-turbulator combustion chamber. Value wise, it's what ever someone wants to pay. Butch
On 11/14/2019 8:39 AM, Jim Bollman
wrote:
Both are attempts to modify a stock block to get better gas flow for more power.�Broadwell is probably the best known modifier of the blocks for better gas flow. I have uploaded some PDF files of his directions on building engines and sports cars. Look especially at the�8portCrosley.pdf file and�EvenmorespeedCrosley.pdf.
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