UPDATED: When the tranny goes boom...

[PureVenom]

Ouch...

Catastrophic tranny failure with Kenne Bell on dyno - ModularFords.com

Text:

Quote: Originally Posted by Psiperformance Pics will be up shortly but heres the sumation. we just finished a kb stage 3 install on a gt-500 with 2100 miles. the blower was runing a 2 7/8 pulley after warmup and test driving the car around for driveability and doing a few short pulls to check air fuel we went to make our first full pull.. at 4800 rpm the transmission LOCKED UP in fourth gear and the resulting force snaped the transmission mount clean in half on both sides where it bolts to the body ripped the spot welds out of the passenenger side sheet metal that the mount bolts to completely ripped the bell housing into 4 pieces the trany then droped down and spun in the trans tunel ripping the sifter off the floor and when the trany fell down the drive shaft was at such a extreme angle in the rear that the u joint sadle was crushed by the back side of the shaft breaking the saddle and allowing the ujoint < wich is still whole and un broken > to drop out of the sadle. The drive shaft spun violently in the tunnel beating the tunnel all to hell with huge damage to the floor pan. At the moment we are trying to figure out just wth caused all this. Seems like the transmission locked up transfering all the power into the case and twisting it in the body. The transmission is confirmed locked in fourth gear you cant move the input shaft or the out put. So far its the only thing that I can see or think of that could cause such a catastrophic failure.

Pics:

Quote: Originally Posted by Psiperformance here we go pictures this is the damage to the floor those are quarter inch thick steel plates they have gouges that go all the way almost through there are chuncks the size of larger grapes and one golf ball gone from the concrete area. This is the transmission as it came out of the car .. bell housing is in five pieces the transmission mount in three. here are the trany mounts wich sheared instantly and are still bolted to the body here is the drive shaft u join flange showing where the angle of the shaft caused the drive shaft to crush the u join sadle when the trany dropped here is the trans tunnel damage

[sonic04edge]

wow

[n8r]

holy crap!

[hottcobra]

perfect reason to run drive shaft loops and bulletproof belhousing

[Y2E0L0L5OGWT]

Damn...Good luck getting Ford to do any warranty work with that...

[bullitt482]

Quote: Originally Posted by hottcobra perfect reason to run drive shaft loops and bulletproof belhousing

Exactly.... Imagine if the clutch would have exploded at 6500 rpm "Feet, what feet?" People don't realize with great power, comes great responsibility.... or something.. In any car with more than 175 or more hp than stock, I would just not rely on stock supporting hardware.

[DarkShadow]

Now there's some owned sauce on your pussy.

[Thomas91169]

Quote: Originally Posted by bullitt482 Exactly.... Imagine if the clutch would have exploded at 6500 rpm "Feet, what feet?" People don't realize with great power, comes great responsibility.... or something.. In any car with more than 175 or more hp than stock, I would just not rely on stock supporting hardware.

cwhen a clutch/flywheel goes out thats some pretty nasty carnage. dsm guy a while back lost a few toes to this, luckily for him he was shifting and his foot was up off the gas and got him in his toes or else it wouldve taken out an ankle. ive always told myself if i ever drop the tranny (in any of my cars) a scattershield would be a pretty justifiable buy, a "while im down there" item.

[JROC]

Quote: Originally Posted by bullitt482 People don't realize with great power, comes great responsibility.... or something.. .

I feel ya. I'm surprised that wasn't a Honda.

Anyway, I have been thinking that next time I add some mods to my car that one would be a driveshaft loop, but after seeing that I think when I upgrade my clutch I will be getting a better bellhousing. People can hate on the GT500's all they want, but they can make a ass of power. Thats an upgraded(its got a different name than T-56) Viper spec T-56.

[Herbstang]

Damn

[bullitt482]

Quote: Originally Posted by JROC Thats an upgraded(its got a different name than T-56) Viper spec T-56.

Are you talking about D and D performance's 6 speed or the TR6060??

[JROC]

The GT500's come with the Tremec TR6060, I just couldn't remember the name. From my understanding its suppose to be a Viper spec transmission. I assume that means its as strong as the transmissions in the Dodge Vipers.

Tremec TR-6060 transmission - Wikipedia, the free encyclopedia

[Thomas91169]

what numbers was this certain GT500 putting out? perhaps there is a dyno sheet of said catastrophic run?

i nary hear of KB Cobra guys blowing trannies, or anyone really blowing T56's in general. would be nice to have a pretty definitive rule of thumb as to when your tranny is on borrowed time.

[PureVenom]

There were just starting to tune that car...they don't have any numbers on it. They had just installed the KB before that run. So nothing is known.

[KyleUSAF]

holy schneikies...

[Thomas91169]

Quote: Originally Posted by PureVenom There were just starting to tune that car...they don't have any numbers on it. They had just installed the KB before that run. So nothing is known.

so the car was moving on the dyno but they were not logging anything?

[PureVenom]

Quote: Originally Posted by Thomas91169 so the car was moving on the dyno but they were not logging anything?