Hello everyone. So I got the jerking to end. Vacuum leak. I'm currently overhauling the engine and well I broke a bolt off of the crank. The one that goes on the cap. Anyhow does anyone know what grade the crank bolts are? So I can replace it for one at the hardware store. Also if anyone know the torque specs for the crank cap bolts, head bolts, connecting rod cap nuts, and camshaft cap bolts. It will would be appreciated. Thanks again everyone.