Quote Originally Posted by 89Vette View Post
Are you sh'ing me? Motors (cranks) don't have a balance shaft. They have counterweights on the crankshaft.

Should I check my muffler bearings too?
Balance shafts go in the top of the engine, usually in the lifter/intake valley, here is a 4.3 V6 balance shaft:



Not all motors have/need them but they are used in some.

And yes I've seen that commercial, it's pretty funny lol