Allstar Performance Holley 4500 Tapered 4-Hole Carb Spacer - 1" Thick AA0220BG3R55 1988-1995 GMC G3500

1988-1995 GMC G3500

1962-1974 Pontiac Grand Prix

E-250 Econoline

Great for Modified

Allstar Performance Holley 4500 Tapered 4-Hole Carb Spacer - 1" Thick AA0220BG3R55 1988-1995 GMC G3500Specially 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",