Need front drive shaft parts

[mike diesel]

I am in need of a new one of these joints here...I am not sure if this is factory or part oft the lift kit that is on the truck to extend the front drive shaft.



long story short...was at the track friday night with a couple buddies. His lbz is lifted 6" and on 35's....2 4x4 launches later is spit the front shaft out at the 60' mark

His front drive shaft has a double u joint setup, which I am not sure if it is factory or part of the lift. Anyone have a part number for this piece or have a suitable replacement available?

 

[hondarider552]

http://www.cognitomotorsports.com/driveline-3194-98xx.html

 

[Dallas S]

That's not factory. Broken a couple of those things aswell. Maybe just me but I had better luck just running the factory shaft. No vibs at highway speeds with my old 6". Eventually broke the factory stuff too but did seem to hold up better.

 

[Hot COCOAL]

Hey Mike, Im pretty sure Ive still got the factory shaft sittin in a box somewhere...PM me if interested

 

[mike diesel]

So a stock shaft will work with the lift kit?

 

[Hot COCOAL]

It should...but Im not 100% certain about running it w/a full 6" kit? I ran the stock shaft w/ the cognito 4-6 kit set @ 5"+ for a while with no issues before I installed the aftermarket HD shaft... I'll check my PM now Mike but I can ship it tomorrow

 

[onebaddmaxxx]

Stock shaft will work fine. There are some local people here that sled pull in 2.6 with a 4/6 lift and have the stock shaft.

 

[Dallas S]

It really depends on what lift/pinion angle. I ran my stock shaft on a 6" procomp bracket lift with no issues after destroying the dual cardien joint.

If pinion is pointing at output u need cv shaft, if your running single ujoint at both ends the pinion and output must be at same angles to prevent driveline vib. Can get away with a couple degrees.

 

[mike diesel]

I will have to climb under the truck and check it out to be certain.

 

[Dallas S]

Ive haven't measured pinion angle on many, if any on these trucks with bolt on lifts, but almost seems if the upper mount is cut off the diff the lift manufacture has rotated the diff enough that a CV shaft is almost always needed to do away with vibs.

Just what I've noticed

 

[Chevy1925]

Ive haven't measured pinion angle on many, if any on these trucks with bolt on lifts, but almost seems if the upper mount is cut off the diff the lift manufacture has rotated the diff enough that a CV shaft is almost always needed to do away with vibs.

Just what I've noticed

on 4-6" lifts it might work but any larger and its a crap shoot. the upward angle of the t-case front output shaft makes it very hard to use a single u-joint ended drive shaft.

Mike, those aftermarket DC shaft are not strong. they just do not hold up to these trucks. hell they break in samurais (they use the same size u-joint when you beef up the driveline in them). a stock one will hold up better but above 45 mph, when decelerating in 4wd he will notice a vibration and not so friendly sound coming from the front end. its the "out of correct angle" front drive shaft. eventually it will either destroy the t-case or the drive shaft or even the front pinion crush sleeve.

if he can get a custom made shaft with a 1410 DC at the top that bolts to that flange, he would be good to go and alot better off.

 

[mike diesel]

on 4-6" lifts it might work but any larger and its a crap shoot. the upward angle of the t-case front output shaft makes it very hard to use a single u-joint ended drive shaft.

Mike, those aftermarket DC shaft are not strong. they just do not hold up to these trucks. hell they break in samurais (they use the same size u-joint when you beef up the driveline in them). a stock one will hold up better but above 45 mph, when decelerating in 4wd he will notice a vibration and not so friendly sound coming from the front end. its the "out of correct angle" front drive shaft. eventually it will either destroy the t-case or the drive shaft or even the front pinion crush sleeve.

if he can get a custom made shaft with a 1410 DC at the top that bolts to that flange, he would be good to go and alot better off.

Yea I'm not seeing much of a racing future for him this year. If i put another one of the same shafts in, he will break it again guaranteed. He doesn't have the coin for a custom shaft either. He might be 2wd for awhile

only thing I remember about the lift while I was under there un boltingthe broken shaft Iis that the center link/idler arm/pitman arm had a weird drop bracket Installed. There is no way to install cognito braces on his setup.

 

[Dallas S]

on 4-6" lifts it might work but any larger and its a crap shoot. the upward angle of the t-case front output shaft makes it very hard to use a single u-joint ended drive shaft.

Mike, those aftermarket DC shaft are not strong. they just do not hold up to these trucks. hell they break in samurais (they use the same size u-joint when you beef up the driveline in them). a stock one will hold up better but above 45 mph, when decelerating in 4wd he will notice a vibration and not so friendly sound coming from the front end. its the "out of correct angle" front drive shaft. eventually it will either destroy the t-case or the drive shaft or even the front pinion crush sleeve.

if he can get a custom made shaft with a 1410 DC at the top that bolts to that flange, he would be good to go and alot better off.

Won't fit a 1410 at the tcase. I wasn't even able to fit a 1350dc up there with a 263. 273 fixes all those issues haha

 

[Chevy1925]

Yea I'm not seeing much of a racing future for him this year. If i put another one of the same shafts in, he will break it again guaranteed. He doesn't have the coin for a custom shaft either. He might be 2wd for awhile

only thing I remember about the lift while I was under there un boltingthe broken shaft Iis that the center link/idler arm/pitman arm had a weird drop bracket Installed. There is no way to install cognito braces on his setup.

he probably has a UCA drop lift. those incorporate a centerlink drop of some sort.

a custom shaft isnt that much more than a new DC shaft from cognito or the likes. i use to get those DC shafts built with 1350 joints for 300 bucks out the door at our local drive line shop and you get a warranty thats local. Im 90% sure those joints are 1310 joints on the front end though.

 

[Chevy1925]

Won't fit a 1410 at the tcase. I wasn't even able to fit a 1350dc up there with a 263. 273 fixes all those issues haha

with a fixed yoke like above or using the factory style slip yoke? that sucks though cause that would eliminate alot of issues these front ends have.

sourcing a stock dodge front DC might be a good idea or ford DC and having it cut down to fit a chevy front has always been an idea of mine. the factory stuff holds up alot better than this aftermarket bs.

 

[Dallas S]

Yea I'm not seeing much of a racing future for him this year. If i put another one of the same shafts in, he will break it again guaranteed. He doesn't have the coin for a custom shaft either. He might be 2wd for awhile

only thing I remember about the lift while I was under there un boltingthe broken shaft Iis that the center link/idler arm/pitman arm had a weird drop bracket Installed. There is no way to install cognito braces on his setup.

Probly a 6" procomp bracket lift. They drop the CL and then use supports to the LCA bracket to keep the CL from twisting

 

[clrussell]

What kind of lift is it mike? Cognito offers the cv style shaft for people that drive in 4x4 to reduce vibration. I know someone who broke theirs multiple times racing. So he ended up swapping a stock one in during the summer months.

Regarding the centerlink drop, the way some work / are braced the centerlink doesn't rotate like a stock one.


Sent from my iPhone using Tapatalk

 

[Dallas S]

with a fixed yoke like above or using the factory style slip yoke? that sucks though cause that would eliminate alot of issues these front ends have.

sourcing a stock dodge front DC might be a good idea or ford DC and having it cut down to fit a chevy front has always been an idea of mine. the factory stuff holds up alot better than this aftermarket bs.

Either with a true SYE or the procomp/cognito "slip flange" there just isn't any room. That's why they use that tiny housing for the DC. Even tried retro fitting a 1310 DC from an Xj but the DC casing is just too big.

 

[Chevy1925]

Either with a true SYE or the procomp/cognito "slip flange" there just isn't any room. That's why they use that tiny housing for the DC. Even tried retro fitting a 1310 DC from an Xj but the DC casing is just too big.

explains all the breakage then....

Procomp, CST, Bulletproof, and a few others make a UCA drop bracket lift. some of these are much better than others, procomp being the bottom of the barrel.

 

[mike diesel]

I'll find out this afternoon exactly what lift is on it.