For Chevy V6 3.8L 4.3L Ready to Run Electronic Distributor (Vacumm) RED CAP These Cast Body Ready-to-Run distributors are the Perfect upgrade for your outdated and worn out stock distributor. All that is required to install one of these distributors is to hook up two wires and you are Ready-to-Run! A maintenance free magnetic pick up inside the distributor used to trigger state of the art ignition module under the chrome cover. To increase gas mileage, we included a vacuum advance assembly, and you can tailor the mechanical advance curve to suit your engine. For excellent street performance, the 7000 Series Cast Ready-to-Run distributor is the best choice!