Originally Posted by cesalie2
Very interested in your Holley EFI Install, please share details.
A few quirks. You have to add an O2 sensor. It requires removal of a small pcs of exhaust heat shield and drill a hole in exhaust pipe to and bung for O2 sensor. Most of the 454s have a quadrajet carb so need a conversion plate for the newer square pattern. Have to modify the accel linkage a bit to get a straight pull but not bad. The coolant sensor is a bit of a problem also because of shroud but we got around it. There is a display that needs to run into cockpit but easy to do. The display gives you rpm, temp, air to fuel ratio and voltage. The price was $1350. A new quadrajet was about $450. I went for it and a believer. Power, Milage, display and instant start.