Beater:

I'm assuming the Chevy-II 4-banger being the smaller brother to the 194/230/250 six, nearly everything is the same (only minus two cylinders). With that in mind ...

You're right that the big end width of the six rod is wider at about 1.030" where the SBC width is .940" (as I recall). For the six, the big end diameter is the same as the SBC "small journal" (265/283ci) at 2.000" and the small end is the same at .927". The problem is the beam offset for the V8 where the L6 isn't.

Continued ...