I have a 1987 K10 Pickup that was stock w/ 305. A new 350 was installed and all parts moved to the 350. It doesn't warm up and idle very well. It takes about 5 minutes to get up to temp so it runs ok. Any info on what needs to be done to correct. It has fuel injection and all smog stuff in place. Any info on making it run better. Computer upgrade? Temp sensors? Injector size? Thermostat temp?
I know that my old 74 350 takes about 5 minutes before it'll even move, you just got to love cast iron. I don't know much about the newer ones, but I would look at check your idle air control valve on you throttle body before you do anything else.
hey man i own an 87 also my trk was orignaly a 305 and i now have a 350 out of an 91 chevysuburban check your idle air and tps sensor email me at chevyman352003@yahoo.com if u have any questions maybe i can help u