The color is from Rust-Oleum's Engine Enamel Grey. I used 500 degree. There are flat and gloss. I chose the gloss. Here is a link- http://www.rustoleum.com/product-catalog/consumer-brands/auto/specialty-paints/engine-enamel
Hi, nice looking truck. Can I ask the color used on the engine block? And where you got it from? Thanks bob. (just starting on a '51 GMC).