Well, I don't have any more automotive engines handy, but I have a few others.
Pratt and Whitney R4360 Wasp Major radial engine. 4 rows of 7 cylinders, 4360 cubic inches of displacement, horsepower varied from model to model. As low as 2650 hp and as high as 4300 hp. Taken at an airshow, circa 1985. Canon A-1, Vivitar S1 28-90, Kodachrome 64.
A much smaller Pratt and Whitney, the R-1340-AN-1 Wasp, which was Pratt and Whitney's first radial engine and the first of their famed Wasp series. 1340 cubic inches, 600 horsepower. This one is housed within a WWII vintage North American AT-6 Texan advanced military trainer. Taken with a Yashica Mat 124G, Kodak Tri-X.
A Lycoming R-680, 9 cylinders, 680 cubic inches, 285 horsepower. This engine is bolted into a Stearman Biplane, used as a primary trainer for American military fighter pilots from the 1930s through WWII.
And even more air-cooled delights! These are bolted into frames that are all balanced on two wheels.
A Norton 750cc Commando. This engine has had the popular single Mikuni carburetor conversion done to it. Minolta Hi-Matic E, Fuji Superia 400.
A Harley-Davidson big twin Ultra Classic. I'm not sure of the displacement or the horsepower of this model. Probably around 130 cubic inches and not much horsepower for that amount of displacement. Typical Harley. Bronica ETRSi, Zenza 75mm f/2.8, Kodak Portra 160.
BMW 900cc "Airhead" motor in a BMW R90S motorcycle. Horsepower about 57. Taken with a Minolta Hi-Matic E, Fuji Superia 400 film.