How much horsepower does a 1990 dodge ram 150 pickup with the stock 318 in it?

The 1990 Dodge Ram 150 with the 318 cubic inch (5.2L) V8 engine had a horsepower rating of approximately 150-170 hp. The exact number varied slightly depending on factors like the specific carburetion and emission equipment used that year. You'll likely find documentation showing it within that range.