ok, ive been trying to find out whats in this 77 el camino i bouaght recently but it has become more of a chore that i originally planned, if someone can please help me find out lemme know the large printed code by the timing chain cover is to81uckh7 (im pretty sure its a 1, and after the t that it is a o, but if not lemme know) any help would be VERY great, thaks

The engine was built in Tonawanda.

Its a 350, whopping 170hp, 8.5:1, 4 barrel, Auto trans.

The 'o81u' section is the date, so its probably a zero, and note sure about the U.