Prepare a 9x13 baking pan by lining it with 2 large pieces of foil, crossing them in the center so the pork ribs can be enclosed in the foil.
Use a sharp knife to loosen the thin membrane on the back of the rib rack.
Grab hold of the membrane using a paper towel and pull back to remove the membrane. Discard the membrane.
Cut the rack of ribs into 3 sections.
In a small bowl, combine chili sauce, molasses and vinegar. Mix well.
Reserve 1/2 cup of sauce for basting during grilling.
Place the rib pieces on the foil in the baking pan.
Pour the sauce over top the ribs.
Fold the foil over the ribs to enclose them.
Bake for 3 hours.
Remove ribs from the oven. Grill ribs on a preheated grill (400 degrees) for 4-6 minutes per side. Baste with additional marinade while the ribs are grilling.
Remove from the grill and serve immediately.
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Notes
The calories shown are based on the recipe being divided 5 ways and all of the marinade being used. Since different brands of ingredients have different nutritional information, the calories shown are just an estimate.