Does your 87 350 have electric choke?

My 1987 350 (assuming you're referring to a Chevrolet 350 cubic inch small-block engine) likely has an electric choke, but it's not guaranteed. The use of electric chokes became increasingly common in the mid-to-late 1980s, but some vehicles still used vacuum-operated chokes. To be certain, you'd need to examine the carburetor itself. An electric choke will have wiring connected to it. A vacuum choke will have a vacuum line connected to it.