i got a 99 cobra and i took it to the track sunday after my fifth pass it felt sounded like i had something stuck to the driveshaft that kept making a thud everytime it came around but now that is gone but my trans sounds a little whinny in 4th and 5th the guy i bought it from had 4:30 put in it but i dont think it is from the rearend any thoughts

 

I have a 98 Cobra, and it's been whining in 4th and 5th too. Not sure what it is, and it hasn't been doing it very long. It's only got 50 on the clock and pretty fresh fluid in the trans.

 

well im gonna change the fluid this weekend and check for metal if there is any "hopefully not" im gonna drop the tranny and take a look but if it is bad i might just switch it out with a better one been lookin online

 

i read on another thread that sometimes the aftermarketgears will make a bit of noise and that swapping to an aluminum driveshaft will help reduce vibration therefore reducing whining noise. Dont know from experience though.