Some stories are so obvious and necessary that it's difficult to identify the need. Surely everybody knows what a Q-jet looks like and how to tell it apart from an old Carter or a Holley 4150. "Not so ...

Holley has always offered vacuum-secondary performance carburetors in two versions--4150 models with replaceable jets in the secondaries, and 4160 models with a metering plate and no replaceable jets.

Testing carburetors on an engine dyno can sometimes be misleading. We've all seen tests showing large-cfm carburetors making more power—even on a small engine that nobody in their right mind would run ...

🛍️ Amazon Prime Day is live. See the best deals HERE. 🛍️ By Justin Dawes/ Motorcyclist Published Mar 13, 2019 5:30 PM EDT This article was originally published on Motorcyclist Modern fuel injection ...