Most 1987 models put out around 190 h.p.
Need the YEAR and what it is in to answer that question right.
Chevy Caprice power rating for that year was 170hp.
Somewhere around 230hp
The horse power rating for the Chevy 1900 ranges between 195 to 200. The 5.3 liter engine was widely used in the year 1993.
http://www.nastyz28.com/chevy-engine-code-stampings.php I checked this site but I don't see anything that starts with KO.
250hp The Horse Power rating stock is 250 HP
The 2000 Chevrolet Z71 5.3 liter engine has a standard horsepower rating of 235 horsepower. The engine had options to increase the horsepower to is much as 365 horsepower.
I think it is around 160
303 HP
375
170hp
200