413 Wedge

Me and a buddy just rescued 2 '65 300's with 413's. one for me, one for him. He also picked up a 426 long block with the deal. My buddy (mid 60's with a thick skull) swears up and down that the 413's are all "street wedges" and that they are valuable.. I told him that they have wedge shaped combustion chambers, but they are not "wedge" engines and should not be considered valuable. I have no idea where the "street wedge" name even comes from as I've found no information on that terminology.
They are wedge engines but not max wedge.