I have an 84 c-20 truck with a way overbuilt 350 engine in it. I didn't do it, I am just trying to make it run better for a while till I finnish building another 350 the right way for a truck. It has a solid lifter cam in it and I have no idea who made it or how big it is but it has a terrible idle. Worse than my old drag car. Huge cam. Right now I got it running pretty good for what it is but when it heats up it gets pretty sluggish. I strongly suspect the valve lash since it is only 6-8 thou hot. The only solid lifter engines I have ever worked on , aside from deisels are usualy a lot more like 12 to 22 or so. I was thinking about taking this one out to .020 hot. Anyone see a problem with that much for a solid cam street engine? Or have a better suggestion?
Previous owner spent all this money on it and left stock manifolds, worn out qjet and a very worn out hei on it. I already replaced all of that. No wonder he traded it off so cheap. Moron! Plus it is a 3/4 ton chevy truck. Sometimes I would love to see into a persons brain like that and see what is going on. Probably not much.