hollowch

It started off small, but has progressively gotten worse over time. Now anytime I put my drivetrain under torque on moderate acceleration, I hear a loud repetitive popping sound coming from the rear differential area. I don't know if it's a joint on the back of the driveshaft, or whether it's in the differential.

Any ideas what that could be? It's a '96 2WD long bed on 33"s