The Stovebolt Site Forums The Side Lot Old Dominion Stovebolt Society (MD, VA, West VA, DC, DE and PA) Blown Engine update

Must? That is up to you.

Chevrolet of GMC engine?
What size/year engine?
Car or truck engine?

Here is an old listing of 1912-1966 Chevrolet engine colors.
Shades of grays, blues, yellows, greens, etc - no one will ever know.
No one has ever posted factory color codes (from GM documents).