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351 Cleveland Performance Engine Build Cooling Passages

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Clevelands and Midlands have different cooling passages between the block and heads from what we find with 289/302/351W engines. Because the 351C, 351M, and 400M have dry intake manifolds, coolant flows across the engine via cooling passages like this one between the heads and block. When we bolt Cleveland heads on a Windsor block, this passage is eliminated, with a new cooling passage drilled to accommodate 289/302/351W intake manifolds.
351C Performance With Common Parts - A Cleveland Course of Action

 Clevelands and Midlands have different cooling passages between the block and heads from what we find with 289/302/351W engines. Because the 351C, 351M, and 400M have dry intake manifolds, coolant flows across the engine via cooling passages like this one between the heads and block. When we bolt Cleveland heads on a Windsor block, this passage is eliminated, with a new cooling passage drilled to accommodate 289/302/351W intake manifolds.  View Related Article

 

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