The Chevrolet V8 engine was usually, there are always exceptions it seems, a medium shade of Red until sometime around the 1960 to 1961 production runs when they started using a Red with more of a slight Orange tinge to it. The Blue colored V8 engines were used in the 1970's and later became almost exclusively Black in color when they became referred to as the "Corporate Engines" since they were used on most of the other GM vehicles. The Red/Orange color would be considered normal for a 1969 Chevelle. Chevrolets that I have owned in the past from that era were a '66 Impala SS, with a396 engine, a'67 El Camino, also a 396 engine. A '68 Full size Chevrolet Bel Air with the 427 engine and a '74 Chevrolet C-10 Pickup with the 454 engine. And '77 Camaro with the 350 engine. All of these cars had the Orange shade of Red as their factory color. I bought a used '69 Camaro with the base 307 V8 from the original owner and it also shared the same engine color.