I put an Edelbrock performer series on my 1976 440, and with proper adjustment, it runs great, starts properly in cold weather. I have had a problem with vapor lock, but have taken steps to fix that. Don't know if it is fixed yet, but I will soon. I should point out that my Edelbrock was new in the box, but the float level and drop, nor any part of choke function was adjusted. Nor would the rear butterflies open. The instruction manual did have very good instructions, for the most part, on how to make adjustments.
