Allstar Performance Holley 4500 4-Hole Carb Spacer - 1" Thick GP230320 and also saves weight

and also saves weight

Vehicle Compatibility: Universally fits any vehicle with a flat underside of dash

E85 / Methanol

10 AN Hose to 10 AN Female O-Ring

Allstar Performance Holley 4500 4-Hole Carb Spacer - 1" Thick GP230320 and also saves weightSpecially 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",