Well, having the tires spinning and then they hook while in third gear (seen more in burnouts than street use) will shatter the sprag race every time, that transmits the shock backwards in the transmission and the race just flexes and brakes. The "Corvette" hardened sprag race is a normal TH350 item. Most guys will not spend the $350-375 for the 32-34 element sprag and drum alone.
I am not taking up for TCI, I just have built some transmissions for myself and guys I know, and I have broke quite a few, learning along the way.
I bought this transmission and bolted it up to my 383. It was advertised for 600hp and was suppose to be a street strip package. Well needless to say it couldnt even handle a burnout with drag radials for more then 10 passes. My last run with it I lost second gear during the burnout. I was not impressed after I tore it down to find it built with weak cheep parts. They improperly shimed the bearings and they wore into the drums. So I built my spare with all hardend drims and one way sprags. I also put in a manual reverse valve body. It shifts way better then that Junk TCI ever did. And of course I didnt use there fluid and or Torque convertor so I now have a very expensive boat anchor. Any one else have bad luck with them?
