The name is Nate - I've owned a frame off resto '84 C10 short bed that started life as a V6/TH400 and an '86 K25 High Sierra.
The C10 received a healthy 350 and long tubes, only to install an Edelbrock intake and heads, Holley 670 carb, Crane cam, and a 383 stroker kit.
The Sierra was a...