my lts, and y-pipe went back to summit today. should have my 450 bucks by next wednesday...

 

so, little undate on 4x4 usage for ya... JUNK! driveshaft constantly hits the y-pipe... glad im getting rid of them. if you use 4x4 a lot, or even a little, chances are you will end up rubbing a hole into the y-pipe, or collector. not worth the 500 bucks imo...

had to drive in 2wd while on the road unless i absolutely needed 4x4. thought it was something wrong with the transmission(low fluid) but then i realized it was the exhaust being hit by the driveshaft.

 

Any way to bend them a bit, to get more clearance?

 

nope.. whole pipe runs in parallel with the driveshaft.

 

If it wasn't for the balance weight on the drive-shaft, I wouldn't have a hit (it hits the collector)... some heat and leverage collapsed the side of the collector just enough to gain a 1/4" clearance... I know, this screws with the theoretical flow, but these are oversize for a 5.2 to start with.
Now I only get a hit if accelerating hard off the mark... I have the engine mount inserts mentioned earlier, and will report back when I have them fitted... they should help.

I could see side-load on the front suspension flexing the panhard bushings being another potential to cause a hit.

 

im also lifted up front with v10 springs. so i lose an inch of height with the plow raised, which still puts me a bit higher than stock height, and i still have the issue.

again, its all personal preference. i just dont like the clearance, and i obviously hits, which is not good. for both the exhaust/engine, and driveshaft/transfercase.

 

Trust me, I don't like the hit either.
If I had know of the issue before the purchase (why I started this thread), I would have gone with Gibson shorties.
But, now that I have the LT's, I'm going to make them work... and it doesn't hurt that my ceramic coat LT's cost $265.

 

From the photos I have seen the use of a xcase index/clocking ring would help big time, but they are around $200.

 

Without thinking about it in more depth, I'm not thinking clocking would help in this situation.

The hit is towards the top inside edge of the collector.
The front shaft output is below the input shaft on the xcase, so clocking up would push the shaft wider and laterally closer to the collector.
Clocking down would just move the contact point lower on the collector.

Also, the point of of contact is towards the front end of the shaft (closer to the pig than the xcase) so any movement at the xcase end is going to be greatly reduced at the point of contact.

However, if the mount inserts don't do it for me, this is worth further investigation.

 

It does not just move the ds down it moves it down in a arc, so it goes down 2.5" and over close to 1.5" - 2".