Chrysler will unveil some big plans next week.

Chrysler announced on Friday plans for "new investments and jobs in Southeast Michigan" without giving further details. Chrysler says it will fully divulge the details of its plans next Thursday.

Although Chrysler is keeping tight lipped about what exactly those new investment and jobs might entail, the Auburn Hills-based automaker is scheduled to make an official announcement on the subject at its Mack I Engine Plant in Detroit on November 15. Chrysler CEO Sergio Marchionne will be in attendance.

Chrysler's Mack engine plant currently makes the 4.7L V8 used in the Ram 1500 pickup truck. It remains unknown if Chrysler has plans to replace the 4.7L with a new engine design, but it is certainly a possibility. Chrysler is slowly killing off its 3.7L V6 that is based on the 4.7L V8 and the eight-cylinder is only marginally more powerful than Chrysler's 3.6L V6. Moreover, the 4.7L achieves identical fuel economy figures to Chrysler's larger and more powerful 5.7L V8.

The Mack engine plant employs 144 hourly workers and 43 salaried workers.