What’s left of my input shaft. Pic may be disturbing.

[Blown 346]

Finally got my truck back after a month of having the trans built and getting a custom Billet input shaft made. Anywhere the trans builder looked the shafts were rated to 1000HP at the flywheel. My truck makes 1010 on 14 psi. $3,400 later after having the entire trans re done and built for the track, I hope I dont have this issue again.

 

Snapped clean off without even a burr.

[EXGM]

Thats impressive!

[Blown 346]

That wasnt off a launch either. The truck just hit 3rd gear and about a second later heard a loud snap. Im worried when it goes to the track and hope the new one doesnt break.

[EXGM]

Hopefully the new one was heat treated to harden it!

[Rholston]

Thats actually really impressive to round it out like that and scary at the same time

[matslp488]

Dang! You got a beast of a truck!

[PaulitoIntimidatorSS]

Holy crap!!!!! that looks like it was rounded off on purpose lol. Best of luck with the new one, should have had two made since its custom just in case.

[Blown 346]

I just found one that can handle over 1500HP. So the truck goes back to the shop for them to install this one instead of the 1000HP one I have now. Pisses me off.

[someotherguy]

I'm no engineer or stress failure analyst or anything of the kind...

 

But it doesn't seem terribly coincidental that it failed where it did. Maybe it's a weakness inherent in the spot where it's cut down for what, a snap ring, or...?

 

Richard

[Blown 346]

This was the stock one,lol. The builder who said he built the trans (I wont say names as he is known here) the old owner spent $5,000 on it to have the best of the best and he only got a shift kit put into it.

 

Input shafts almost always break at this point due to where the pump and convertor meet.