Owatonna 250 swather

I am looking for information about the GM industrial engine that was on these machines. I purchased one recently and have been unable to find any info on it. Anything anyone could suggest where to look or any info that anyone has would be great.

It's a 153 CID Chevy 4-banger that was used in the 60's Chevy II's and Novas, amongst other things.

VERY similar to the 250 CID in-line six except for 2 less cylinders. I have one from an Owatonna that burned installed on an IH 175 windrower. It's a HECK of an engine compared to the Wisconsin it replaced.

From WIKI:

"153

The 153-cubic-inch (2.5 L) 153 was a straight-4 version of the family and was only used by Chevrolet with the entry-level Chevy II/Nova. Usage of the 153 lasted until 1970 when the inline six was made the base powerplant with the Chevy II/Nova (buyers opted for the inline sixes - the 230 or 250); currently, descendants of the 153 are used with industrial (forklifts or generators) or marine applications. A later variant of the 153, the 181, used a larger 4 inch bore and a longer 3.6 inch stroke. The 181 (branded by GM as the Vortec 3000 for marine or industrial usage) was not installed in passenger cars.

This engine is entirely different from the later 151-cubic-inch (2.5 L) Iron Duke, but the two are often confused today. That name was never used for this engine when it was produced.

Applications:

* 1962-1969 Chevy II
* 1967-1971 Postal Jeep
* 1968-1992 Chevrolet Opala (Brasil)"


What else do you want to know?
Link to article about the 6s. Scroll down for the 153s.

The only other thing would be horsepower and rated engine speed. Thanks a bunch!

Don't know anything about the Wisconsin engine. Why is this GM engine so much better?