Welcome to the "Bolt"! your truck has a 305E V-6. you can tell the V-6-s,'cause the spark plugs are in the intake manifold. They are good engines,although some consider them "boat anchors" Check-out this '64 4000,on "Youtube". Subscribe to his channel,(Paulybuilt),and ask him for info. If he knows,he'll give you an answer pretty quick! Hope you enjoy the video!
1964 GMC 6400 - The Blue Truck
