Blend all ingredients together. Pour over chicken halves. Marinate 4-6 hours. Prepare grill following manufacturer's instructions. Grill chicken over hot coals until internal temperature of 165 degrees F. is reach when thermometers is placed in the thickest part of the thigh. For a charcoal grill that is 1 1/2-2 hours. Remove from grill and place in a tightly covered baking pan. Let rest 15 minutes. Serves 12-14.
*I know this sounds like a crazy amount of garlic but it isn't as strong as it sounds.