Allstar Performance Holley 4500 4-Hole Carb Spacer - 1/2" Thick Data Acquisition 1984-1996 Ford F-250

1984-1996 Ford F-250

1996-1998 GMC Savana 3500

3 in Element

converts your shield into the highest performing Anti Fog

Allstar Performance Holley 4500 4-Hole Carb Spacer - 1/2" Thick Data Acquisition 1984-1996 Ford F-250Specially designed for drag race applications to isolate carburetor from manifold, spacers prevent horsepower robbing heat transfer and increase the distance from the bottom of the carburetor to the manifold plenum for better air flow. Spacers are CNC machined in the U. S. from a polymer compound able to withstand temperatures up to 400F. Available in open or four hole versions for 4150 and 4500 series Holley and Holley style carburetors in 1 2", 1",