They were manufactured for sprint car but did not come off the corners as strong as the normal Chevrolet designed cylinder head a sprint engine builder told me. He said that he would like to try them at Bonneville where you could keep your foot-in the throttle for 5 miles..
Just came across this on PWC. Looks like a 4 cylinder from the side but not from the top. 1938 Lancia 8. Last pic is one all dressed up.
After 44 pages and many threads on the Ford flathead conversions as well as others, I would have thought there would have been a few on the GMC/Chevrolet stove bolt 12 ports. For Chevrolet it would be the Wayne but the GMC there was the Wayne, Horning, Howard, Algon, and Skinner. The Horning was bought out to become the Fisher and the Howard became the Arias. I’ll start with a photo of the Skinner which belonged to Joe Fontana and ran in our roadster from 1997 to 2004. We used a mixture of 75-25 nitromethane and methanol. Many ran on gasoline very successfully as well as nitro.
Better look out the naysayers will pop up with they don't like all those offies and plain engines they only want "Unusual" one in here. Ask me how I know But then none of them take up the slack and post any themselves.
Im with Bob. Definitely old marine engine. There's a vintage marine engine site that you might post pics on to get it identified. Oldmarineengine.com I think it is.
@The37Kid and @studebakerjoe both nailed it, the tell is the marine drive unit behind it. It is a Scripps 6 cylinder from 1922.
Mid 1930,s German HORCH ( big luxury car ) V8. The little German guy with the funny mostache liked them.
The world`s first V8 diesel, build for Emmanuel Nobels(nephew to Alfred Nobel) yacht 1910.200bhp @600rpm.
My father in law helped with some of the design flaws of the NOVI engine used at INDY and some champ car stuff back in the day, after WW2 UNTIL THE MID 50S. I cant find any pictures of them but will try to find some. He recently passed and shared many stories of his racing career. He mentioned to me the high pitched wail- growl of the engine could be heard all the away around indy raceway so they could here how the car was running! Hope someone can help me here...