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Mump 0509 Cleveland 06 Z

The Aussie head has the closed wedge chambers (4V head) with the smaller ports and valves (2V head) for improved torque. The 4V head shown performs much better when you're huffing 408 ci through those ports for improved low and midrange torque. You're also getting the mechanical advantage of a 4.000-inch stroke and the dwell time from longer 6.000-inch Chevy rods.
Build A Cleveland Powerhouse

 The Aussie head has the closed wedge chambers (4V head) with the smaller ports and valves (2V head) for improved torque. The 4V head shown performs much better when you're huffing 408 ci through those ports for improved low and midrange torque. You're also getting the mechanical advantage of a 4.000-inch stroke and the dwell time from longer 6.000-inch Chevy rods.  View Related Article

 

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