Here are a few ideas:BigBull said:
1. Red Hills. See the Ogre's page at http://ogrehut.com/trails.php/Sierra-South/RedHills_May_2002 for more details. You'll have to go back down Priest Grade and through Chinese Camp.
2. Out near the end of Ferretti Road and down to Lumsden Campground. Just past that, there is a trail that winds it way up the canyon back to 120 at Buck's Meadow. No single track but good views of the Toulumne River and about 4200 feet of climbing.
3. There are a few trails off of Ferretti Road nearer to Pine Mountain Lake. Cedar rings a bell as being a pretty and easy ride (there was snow when I did it to add a bit more challenge).
4. There are quite a few logging and Forest Service access roads in the area. Get a Stanislaus National Forest map at the station in Buck Meadow. I haven't tried these yet.