Competition driveline weak links

[Redmega06]

After you have built all of the power and got a transmission to hold it . What weak links start to show in a stock driveline.

 

[JVolpe]

I have 600hp and have done many 15-20psi 4wd boosted launches. The driveline is stock except for the flexplate, TC and transmission.

 

[Redmega06]

That's sounds promising as I don't think that my plans will get me over the 600 hundred mark. I just wasn't for sure if it was one of those understood things that didn't get talked about.

 

[TCluff]

Unless you start lifting the truck you should be fine! Big tires seem to break axles!

 

[JVolpe]

I don't see any of the 550-700hp trucks changing anything but flexplate(a must), tc and transmission. Mine is 3 disc TC and all billet tranmission built to race.



2wds need track tires and traction bars, but 4wd mostly just run in 4wd.



I raced on BFG 315s for the first 55k miles and then switched to BFG 285s.



Have put a lot of hard launches at the track for the last 3 years. Just normal service on the transfer case and diffs.

 

[Redmega06]

Well I now I know that as soon as I try to do a pull this summer or race one of my buddies I am sure to find the weak spot. I am getting the feeling that I may have jinxed myself posting this thread.

 

[speedyjdl]

I've gone through one rear U-Joint at about 55,000 miles. Rather than that I haven't had any problems.

 

[KevinSmith]

Competition Engineering Bolt-On Driveshaft Safety Loops - summitracing.com





If you are worried about losing your drive shaft or if you have a Ferd (on the front mostly) you can consider something like this.

 

[MMiller]

Get some good ladder bars to keep the rear driveshaft in the truck when you go truck pulling. A buddy of mine pulled his 06 a lot last summer. He made several upgrades during the summer. Just before he put bars on, you could hear the yokes hitting at the end of a pull. It made some scary sounds, that all went away with some good bars. He was heading for disaster without them.



Michael

 

[Redmega06]

It's not that I am worried just curious. With the power levels out there and some of the fun that is being had racing and pulling I just figured that some u-joints or axles might have been sacrificed.



I had the rear U-joint go also think that it was bad from the get go

 

[MMiller]

In a hard pull, the rear end will start to pull forward and point the pinion up. Then the ujoint starts to bind and fails. A ujoint failure like this almost always, in my experiances, breaks either the yoke on the pinion, or the yoke on the driveshaft, or both. I've seen it a lot that you might win $20-$50 and loose a $300+ dollar drive shaft. :-laf I've even done it. Its not that profitable... ..... It's easy to wrap up $500 in one $50 dollar ujoint failure, that could be prevented with some bars.



Have fun and good luck.



Michael