I suggest you pm either dynamic396 or cahall, both transmission experts and see what they say about using a pwm pump in a non-pwm trans.
My sentiments exactly... You simply cannot use a PWM pump in a non-PWM application. You'll end up with a hydraulic disaster on your hands...Firstr thing is...You CANNOT put a PWM pump in a non PWM transmission. This is something anyone working on a 4L60E should know.
As far as the noise, it sounds like something around the forward drum is assembled wrong.
Before you blame the 4L60E, let's seriously look at who you're having work on it. I know it's tough to spend the money, but it might be time to take it to a professional.
Frank