Allstar Performance Holley 4500 Open Carb Spacer - 1" Thick 41012510 1975-1983 Ford E-100 Econoline

1975-1983 Ford E-100 Econoline

but still only increases at a rate of 150 lb

dynamic fuel delivery system

The internal arch support is not found in many motorsports shoes but greatly increses the comfort when wearing for an extended period

Allstar Performance Holley 4500 Open Carb Spacer - 1" Thick 41012510 1975-1983 Ford E-100 EconolineSpecially 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",