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With the primary and secondary bowls and blocks already removed from our brand-new subject double-pumper, our first step was to transplant the original power valves into the new metering blocks. The power valve channel restrictions are sized at 0.076 inch, providing more "extra" fuel than the original blocks during WOT or when manifold vacuum drops below the power valve's calibrated value.
Holley 750 Double Pumper E85 Conversion Kit - Easy E85

 With the primary and secondary bowls and blocks already removed from our brand-new subject double-pumper, our first step was to transplant the original power valves into the new metering blocks. The power valve channel restrictions are sized at 0.076 inch, providing more "extra" fuel than the original blocks during WOT or when manifold vacuum drops below the power valve's calibrated value.  View Related Article

 

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