Does a 1993 Olds Cutlass Supreme have a timing belt or does it have a timing chain?

Which engine? The 3.1 liter just has a chain. The 3.4 liter has both a chain and a belt.

8th digit of the vin will tell you. T is the 3.1. X is the 3.4. Hopefully you have the 3.1, its a much simpler engine. The 3.4 made decent power but is HORRIBLE to work on so if that is what you have be ready for some big bills.

it is a belt and if the job will be done you want to do the water pump while you are in there because it is timing belt driven. do you want to tear you car apart again. here is a link to every part you will need to do the job, shop around on pricing though.

http://www.buyautoparts.com/buynow/1993/Oldsmobile...