You are running a stock motor, no performance upgrades, just a simple OEM rebuild...

I would say trust the torque spec and make sure your torque wrench is actually calibrated within 5%.

The safest way to torque a majorly important bolt is to use a bolt stretch gauge btw, if you are unsure of what you should torque to, get a dial indicator and tighten to the stretch specification.

Also, forgot to mention...

Since you have the block out of the car, you should have it decked.. Also have the head resurfaced.