Powershifting is definatly harder on every single componet of the drivetrain. (and the engine) You are letting the RPMs acutally rise between shifts and then dumping the clutch. The clutch slips some, jerks the car forward on the shift, and puts massive strain on the drivetrain. Instead of having to deal with you getting back on the throttle, the clutch/trans/rearend acutally has to fight the car at WOT back down to the next gear's correct RPM.

Not to mention that the syncros on the 45 (and to a lesser extent the 3650) are weak junk. Even speedshifting will start to cause problems.

Both of my T-45s were destroyed by powershifting/speed shifting. It starts with a small grind going into 3rd when doing it, progresses to a small grind every once in a while during normal driving, and then one day you powershift again and it wont go in, you miss the gear, and its story over. From that point on, the trans IS gonna break no matter how you treat it.

I will do this every once in a GREAT while with the TKO, but I would never do it again with a stock stang trans. I am a very experenced stick driver(most of my DD cars have been a stick, plus owning the mustang for 4+ years) so its not me... the stock tranmissions just suck.

 

i think its obvious that shock loading any drivetrain KILLS IT.

 

+1 to the last two posts

 

daily driven mustang, loves winter driving. stock t-45 with 81000 miles, power/speed shifted and slammed every day, totally abused. and that guy was saying i shift wrong? i got 81000 miles out of a trans beating the **** out it. that thing should have gone bad 30000 miles ago. come drive with me and then talk ****. NO GRINDING. (yes i know i beat the living sh*t out of it)