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455 Bigblock Project Murderous Overkill Part Vi Exhaust Ports Cnc

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The intake and exhaust ports are also treated to some CNC cutting as part of Mondello's valve job (right) to improve the flow numbers by 35 cfm as compared with out-of-the-box heads. The new port window matches the wide mouth of Mondello's Posi Flow intake gaskets.
Olds 455 Big Block - Project Murderous Overkill Part VI

 The intake and exhaust ports are also treated to some CNC cutting as part of Mondello's valve job (right) to improve the flow numbers by 35 cfm as compared with out-of-the-box heads. The new port window matches the wide mouth of Mondello's Posi Flow intake gaskets.  View Related Article

 

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