Well I'm back from the track (I met up with bootleg837) and came back with no times! I get to the line all ready to lay down a good time untill the light turns green and I feel the truck start to move and I nail it about 2 feet later SNAP!! I sheared off the U-bolts in the rear. It scared the chit out of me at first as the truck went into fail safe mode. So I had to take the driveshaft out and putt to a gas station called ford they towed me home. so at least I found a weak link...

 

That sucks!! Get it fixed and get some times!!

 

http://www.youtube.com/watch?v=b-LC2Aw5TSY
video1

http://www.youtube.com/watch?v=v4MNZbT1rkg
Video2

 

damn that sucks!

 

Holy chit man!!! That really frikkin sux!

 

Wow

 

Well I guess I have to go buy parts now and see if I need a new driveshaft

 

Wow, I just looked at the video. It's hard to see, but did the ujoint fail or did the driveshaft end (loops) "twist" allowing the unjoint to slip out? Either way, that sucks, you would think that the design would have been robust enough to handle the extra torque? Are you going to look for a beefier setup?

 

If it comes to it, I'd highly recommend these guys. Mike Troyer gave me their name, and I bought my driveshaft from them.

http://www.thrashdriveshaft.com/index.html

The speed limiter on our trucks is supposedly set due to the rating of our stock tires AND the limitations of the stock driveshaft. I didn't mess around and replaced the shaft, since my tune removed the speed limiter. If you've got the $$$, it'd be a really good idea to get a high-speed balanced driveshaft. It cost a bit because I have the two-piece shaft... But, I feel much better knowing it's not a weak link any more.

Edited to add: Just watched the videos, guess it's not a question of whether you need a new shaft now.

Lee

 

Wow......and that's with stock tires! Did it wheel hop any right before it broke? I wish that's all I broke.....

 

It did hop once I guess thats all it took I'm pretty sure I'll need a new shaft ford wants 500 for it. maybe Roush will cover it

 

Gee, that trackside announcer is a genius! "I think the truck broke."

Man, at least you weren't going any faster when it broke. That sucks.

 

yea them guys aint right! I'll get her fixed and be back out there in 2 weeks

 

Matt sorry to hear that. I have a question, do you think we need a stronger transfer case ?

 

I dont know, if you have not broke anything I would say no cause you make alot more power than me. And I take it you launch in 4X4? but let's say you break one I would not even know where to find a stronger one what did JDM say?