Little things can make a big difference in how an engine performs. Street engines spend a lot of time at idle and off-idle speeds, so on carbureted engines it's important that the idle mixture be ...

If there were a category titled Good Carb, Bad Reputation, the Rochester Quadrajet would be at the top of that hit parade. It's doubtful there is a domestic fuel mixer more universally misunderstood ...

The last time we talked about carburetors, we focused on getting the idle mixture and speed in line. But that’s not all that a carb requires of its owner. Having your idle in line doesn’t mean the car ...

Think you can't have a small-block that lays down 556 hp, 512 lb-ft of torque, 120-mph trap speeds, and 21 mpg on the highway without dropping three grand on a slick EFI setup? Think again. The secret ...

Your engine feels calm at a stoplight because a hidden idle system keeps fuel, air, and spark in balance. That quiet stability is not luck, it is the result of sensors, valves, and software working ...