holley 4160 help. 600cfm.

I don't understand the problem? and for comparison sake, 1969 440's dropped in the imperials came with a holley 600 as standard equipment. that carb is not too small for a 360 unless its "built", if anything ,its perfect

I have the same carb you have on my 440 now , I went from 64 to a 67, and its a perfect match. im at 5800 ft above sea level. there are a bunch of holley pump shot and other tuning videos on youtube