Originally Posted by flypaper
Originally Posted by cdstl
Originally Posted by stumpy
I may be wrong but I though it had to do with what carb you have so you get the right size opening for the carb top.


The 383 sits higher than the 440 if I'm not mistaken.


you are mistaken
its the other way around
a 440 is a rb or raised block engine = lower aircleaner throat
a 383 is a b engine


Well, yes but I guess what I meant was the 383 base is physically taller than the 440 base.

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1972 Cuda 340 4 speed, 2001 Ram CTD 4x4 6 speed, 1970 Duster 408 4 speed, 1996 Ram 5.9 2x4 auto, 1965 Coronet 500