The 1966 GTO only came with the 389 cid motor. You could, however, get it with the standard 4 bbl quadrajet Rochester carb or the optional tripower (3x2 carbs).
Yes. A gto is pretty much the same chassis as a chevelle, which was available with a 396, which is the same size and weight as a 454.
Sae 10w40.
389 cubic-inch. 360 horsepower
Yes.
yes it will
Images for 1966 GTO are available on the Ultimate GTO website. Ultimate GTO has a tool which allows you to search for certain pictures, narrowing down the color and other details.
Oldsmobile V8/1962 TO 1977
No
206.4 inches.
The standard tire size for a '66 GTO is 7.75x14.
On a 1966 Pontiac GTO, the decal placement for the engine compartment is typically on the driver's side, specifically on the inner fender panel. The exact location can vary slightly depending on factory production variations, but it is generally found near the top of the fender or on the firewall. The GTO emblem is also located on the rear quarter panels and the front grille.
the 4 bbl. version was 335 horse and the tri power version was 360 horse.