I have a 98 Chevy pickup that had a 305 in it I also have a 99 Suburban with the 350, I took the 350 out and had it rebuilt and put it into the truck, now I am don’t But the truck will not start with the computer from the suburban “security light”. But with the 305 computer it starts and runs unfortunately it has a miss in one of the cylinders I don’t know if the computer would cause that or not.