Lee,
Go get a HF Torque Wrench. They are accurate enough for what you are doing and everyone should have one in their tool box. (Don't you torque your lug nuts?) Even better, get an in/lbs and ft/lbs torque wrench. In/lbs is used for valve cover, water pump and pulley and crank pulley. People often snap those bolts with too much torque. Use blue thread lock too on any bolts on rotating items. If you need any additional parts we have everything.