The info is either correct or it isn't. In an attempt to shed light on this subject - factory literature can be presented to use for corroboration of any witnessed testimony.

Fact: The 70-71 parts catalog lists (2) cams for the 383 4bbl in 1970.

Fact: The '70 service manual cam info above also states there are (2) cams for 383 4bbl.

Fact: The first of the two cams for 383 4bbl is specified as being the 383 2bbl cam p/n 2532190; .05 raised ring version; and installed only into the Fury and Suburban models - or Plymouth's 1970 C bodys.

Fact: Translates that all other 383 4bbls in Plymouth's line of '70 B & E bodys were given the E body 440HP p/n 3512907; non .05 raised ring.