low budget bracket racing blues

It could be a tranny issue, I had a silmilar issue with the C4 Ford that I used to race, tranny started whining, and about the same time, et's started going all over the place, tuned out the pump was bad in it, but I had an ingnition problem at the same time so im not totally sure which issue was causing the ET's to be erratic. Similar thing also happened to a good friend of mine with his turbo 400. Not saying that it is definately a trans issue, just saying that based on experience it makes sense that it could be. Maybe go back to the track where you went to the finals, and see if it does it there now, if it does then I would say you may have a tranny issue. Hope this helps.