Chevrolet always painted the engines after final assembly, so unless it had special aluminum valve covers they were painted at the same time and color as the rest of the engine.
The 1965 230 truck engines were Blue, the cars were Orange.
Mike B
Mike Boteler
1956 Chevy 3100 Resto Rod 1952 Willys M38 Army Jeep 1983 Jeep CJ7 Laredo 1984 Jeep CJ7 +++++ Silver Spring, MD