Thread: Thrasher vs Transgo shift kit

The old thrasher kits were made by transgo and where a selective firmness performance kit. The current Transgo SK4T65E production kit is NOT a performance kit and shouldnt be confused as one though it shares many of the same parts that the thrasher kits used. Installing a transgo kit is not going to really firm up shifts much so if that is your intentions it is not the way to go. I uses the transgo kits in all of my builds but I also do some internal work to get the shift firmness where I want it which isnt feasable to most DIY guys wanting a quick install as it would require tearing most of the trans apart. The Intense shift kit is probably the most complete kit with selectability. It costs the most but again is the most complete and probably the best route to go if you cant find an older thrasher kit.

The Thrasher kits moreless had the exact same spring setup as the current Transgo kits, the original Thrasher kits were made by Transgo fwiw. If you are looking for a considerably firmer shift feel then the Transgo kit wont do what you want, though it will slightly quicken up the shifts. There is more to these transmissions than just shift kits but since there is nothing really easy to get to while in the car the shift kits seem to satisfy most peoples needs. I was thinking for one reason or another that the Thrasher kits changed at some point but cant say for sure. The bonus with the Thrasher or Intense kits are the adjustability of firmness from mild to wild. If added insurance and a slightly quicker shift is all you are looking for then the Transgo kit will work fine, just dont expect more than a minor change in shift feel because they dont provide that.