Originally Posted by
special_k
I had the same problem,I would change oil and it woul0d go away then I shimed it like everyone else did and went away for a while. Well it came back so sence my outdrives were really loose I order new diffs front and rear and new gears too. In my case my sun gear where warn out and rounded off compared to the new ones. Sence I replaced both diffs with all new parts no clicking noise under hard acceleration. Hope this helps
I was having the same issue a while back. I traced it down to my rear belt pulley. I had changed my motor and pinion at the track and ran out of time to put my belt cover back on. During the 10 minute race, I had totem dirt and mud onto the pulley and it dried and basicly caused true belt to skip really bad but it sounded like the rear diff. I would check your guys pulleys (front and rear). Just my. 02¢, hope it helps someone.