i bought an 85 suburban from the auction and it had a replacement 350 motor in it and i cannot for the life of me read the numbers behind the head, so i got the sufix numbers from behind the alternator and they don't match with anything I found on the internet. They all say i should have 8 and i only have 7. I don't know where to look on the net to find what kind of motor it is, see if it is a goodwrench replacement than why does it have an older timing chain cover and a new harmonic balancer, nothing matches. I don't even know anymore if it is a 350. I cracked a head or gasket sat and need to know what part to get and need the info.