Squeal Under Acceleration

[Montync]

Hello all, I have 1986 C10 with a 305. I have about 1000 mile on a rebuilt engine. I have a squeal under acceleration(Just started). I have removed all the belts, and checked all vacuum leaks with smoke. I replaced the u joints as a last ditch effort and still no luck. I did notice intermittent water vapor puffs out of the exhaust only on one side under load(wheels chalked and truck in drive) when checking the u joints.
During the rebuild I torqued the head bolts in the proper sequence 3 times, each time letting it sit overnight. I did Not re-torque the bolts after the initial break-in. So here are my questions:

Will a improperly sealed head gasket cause the squeal?
Should I have re-torqued the heads after break-in?
What should be my next step, re-torque the bolts?

Thanks