Sorry I did not catch this on here to warn you,butI took the Edelbrock pump off of my 440 in my dually.It was running hotter than I cared for.The previous owner had put this on it,and had a hi-dollar Griffin radiator,shroud,etc.I compared the Edelbrock pump to a 440 Source pump and they are as close of exact copies as you could get.I assume the Edelbrock design is what they were trying to copy.
Anyway,I went with a flow cooler pump and dropped 20+ degrees from this thing compared to the Edelbrock pump.
Save yourself the trouble,the expensive Edelbrock pump sucks too.