Retrofitting a '91 Suburban

[JBX66]

Hi! I'm from the 60-66 forum but I wandered over here because a family friend of mine bought a 91 Burb with no engine and no transmission, and has since put a (I believe) modified 383 carbureted engine and a transmission that fits correctly to the driveshaft and bolts to the engine. I don't pretend to know anything about these era cars. My question is: Are there going to be some problems with the computer system? Like, will the computer sense that certain wires are not attached and refuse to start the engine?