How about this amazing 80-year-old original Kodachrome.
Official caption: Essex-class fleet carrier USS Lexington (CV-18). Aviation mechanics work on the Pratt and Whitney R-2800 engine of a Grumman F6F-3 “Hellcat” fighter, during a lull between strikes on Mili and Kwajalein, circa early December 1943. [Note: Bill Surgi says this man is AMM 1/c Brannam, of VF-16. (18 May 1993 data)]
People forget just how big the R-2800 Double Wasp was.
America’s first 18-cylinder radial engine, with water injection and (later) turbo-supercharging, the R-2800 produced more than 46 kW/L (1-horsepower/cubic inch) and, in the R-2800-10 variant as used in the above Hellcat, could cough up a whopping 2,250 hp just before the red line.
Some 125,000 R-2800s were made between 1936 and 1960 and, besides powering all the best Navy/Marine piston aircraft of WWII and Korea (Goodyear FG-1, Vought F4U-1 and F4U-2, F6F, and the F8F Bearcat) also powered the massive P-47 Thunderbolt and was paired up to give the B-26 Marauder, AJ Savage, F7F Tigercat, and P-61 Black Widow their speed advantage.
Two R-2800s were enough to heave the behemoth Martin PBM-5 Mariner flying boat, which had a takeoff weight of 60,000 pounds, out of the water.
Commercially, it was used after the war in the Douglas DC-6A/-6B, Martin 202A, Martin 404, and Convair 340 airliners
The final “E” series R-2800-30W used a water-methanol injection and a single-stage supercharger to give the F8F-2 Bearcat a 2,500 hp powerplant– and could be tweaked to 3,100 hp. There is a good reason F8Fs were prized in air races and broke long-standing speed records for piston-engine aircraft.