I bought this spacer to insulate my carburetor (350 Chevy Hot Rod). It works well for that purpose, and in fact, after driving the car on a hot day, I could actually touch the spacer (yes, it was pretty hot, but certainly not hot enough to burn my skin). As a result, while I have nothing more than a pants-fit feeling, I do find that low-end/midrange torque has been increased as well. The only (minor) issue I had was that the included carburetor mounting studs were about 1/4" shorter than the baseplate on my Demon carburetor.
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