Thumbnail Filmstrip of Allstar Carburetor Spacer 1" Open 4 Barrel 4150 Spacer Phenolic fits Assassinators too Images
1 " Thick, open plenum, phenolic spacer 4150 Fits all Known Holley and Quick Fuel , ATM
and other 4150 carbs and our 4" Enderle Throttle bodies .
Specially 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 400°F. Available in open or four hole versions
for 4150 and 4500 series Holley and Holley style carburetors in 1/2", 1" and 2" thicknesses
. Tapered four-hole spacers have specially contoured holes to increase air velocity under the carburetor. Not intended or recommended for street or circle track use.