Carb Pics – Carter 400 AFB
The first carburetor I put on the car was a Carter 400 AFB. The nice thing about a carburetor is if it is new or in good shape you can count it to get the car going and you can put your time into trouble shooting other bugs – ignition, fuel supply or whatever. The problem with carbs is that they most of the time deliver a close mixture which is usually off a bit in parts of the rpm curve. So often I’ll get behind a beefed up muscle car and it smells like a gas station when you’re behind it. It’s not hard to figure out that if you smell gas – it wasn’t burned – which means it’s running rich. Some terribly rich. It is better to run more rich than lean.
People buy and Edlebrock or Holley carb and put it on thinking they’re all set but have no idea how much better the performance would be even if they tuned the carb. There are tuning kits for almost every carb I’ve ever run across and that make make great improvements on the performance.
Computerized injection, either direct or throttle body can be tuned in much closer. After this Carter I’ve done throttle body and it is an obvious difference in performance.