How to tell stock 4bbl intakes apart???

[tufamc]

got a line on a oem square flange 4bbl intake, guy says he has parts for 383's and 440's, Is there a way to tell them apart just by looking at them? sorry I'm new to mopars, i know the 383's and 440's share some parts, but i believe the intakes do not interchange,

thanks, JR

[Nacho-RT74]

440s are wider... around an inch, maybe little bit more in total.

then also by casted PN LOL

Casting#    Application
2408 156   63 Max Wedge NASCAR Single Plane
2806 178   68-69 440 4bbl
2806 301   68-69 383 4bbl
2951 666   70-71 383 4bbl
2951 736   70-71 440 4bbl
3614 014   72 440 4bbl
3614 046   72 400 4bbl
3671 879   73 400 4bbl
3698 442   74 400 4bbl
3698 444   73 440 4bbl
3751 721   74 440 4bbl
3830 733   74-76 440 4bbl
3830 949   75-76 440 4bbl
2946 278   70-71 440 6bbl
3412 048   69 440 6bbl (Aluminum)

[John_Kunkel]

Low block intakes are about 13" across the front of the flanges, raised blocks are about 14".