What is the stock hores power for an 5.7 liter v8 enging in 1990 gmc sierra?
The 1990 GMC Sierra with the 5.7L V8 (a TBI version of the small-block Chevy) produced approximately 180 horsepower. Keep in mind that this is a factory rating and actual horsepower can vary slightly depending on condition and specifics of the engine.