Is the 1989 mercury gran marquis 302 a roller cam motor?

The 1989 Mercury Grand Marquis with the 302 engine does not come equipped with a roller cam motor. Instead, it features a flat-tappet camshaft design typical of many small-block Ford engines from that era. Roller cam technology became more common in Ford engines in the early to mid-1990s. If you're looking for a roller cam setup, you would need to look at later models or consider retrofitting.