If you havn't done so already, I would put in a front crank seal and oil pump o ring, rear main seal, valve cover grommets, both half moons, new pvc valve and grommet, drive belts, and check the exhaust manifold and gaskets. That was one of their poorer designs to a great motor. The manifold gets heated up and the studs will back out. If they do, I suggest time certs and not heli coil. Eventually even helicoils will back out.
ok i am new with the toyota product... i have a 1987 pick up 4wd 22r carb.... i am putting a motor in it... i changed oil pan gaskit, timing job all them gaskits.. valve cover gaskits... put new clutch in it ... put a toyota oil filter.. what some other things i can do before i start running this truck?