Does anyone know the horsepower rating of 350 in a 1990 GMC Suburban?

The horsepower of a 350 engine in a 1990 GMC Suburban depends on the specific engine configuration and options. Here are some common horsepower ratings for 350 engines in 1990 GMC Suburbans:

- 5.7L TBI (Throttle Body Injection): This is the most common 350 engine found in 1990 GMC Suburbans. It produces around 210 horsepower.

- 5.7L TPI (Tuned Port Injection): This is a more powerful version of the 350 engine that was available as an option in 1990 GMC Suburbans. It produces around 230 horsepower.

- 5.7L Vortec This engine was not available until 1996. Vortec engines use a more efficient design and produce around 255 horsepower.

It's important to note that these are general horsepower ratings and the actual horsepower of a specific engine may vary depending on factors such as maintenance history, modifications, and elevation.