Tag Archive: 600 vs 750 cfm, carburetor comparison, carburetor testing, spotlight, vacuum secondaries vs mechanical
Common Carburetors Tested! DOUBLE PUMPER Vs. VACUUM SECONDARY, 750 vs. 600 CFM Carburetors. Which One Is Better?
Nov 21, 2025Chad Reynolds0
Freiburger is back at it, testing carburetors on his Red Duster and you might be surprised by some of the results. Or maybe you already know exactly what the differences are and could have told us...





