The last two times I've been to the track, I seemed to have missed a gear. I launch out of the hole, shift, and I'm in third. Going down the back stretch it has all gears. Since the first time it happened, I made sure that my hand was off the shifter when launching and that I was actually leaving in first.

The very last run I did, it shifted fine and def launched in first. The other times it was either leaving in second or shifting to second on its own very quickly. I'm really confused.

Something violent occurred in the driveline when I let off the gas in the burnout box too, but this was after the shifting problem.

Its a reverse full manual th350, no transbrake.

 

No ideas?

I'm planning on replacing the blower with a 250+ shot of nitrous out of the hole which should be a real strain for the trans.