Ok I got truck runnin and it's a bad bitch... Something's are concerning me if I proceed as planned and going with twins.

First issue... Solid motor mounts? Anyone know of or can tell me who makes? Or do I have to get creative?

Second issue... Built 4L60 gets second gear chirp of tires and is awd... Problem when do drive lines, and t cases start to fail, rear end is the 8.5" 411 gears front and rear.

Third issue... (Awd guys only) how do you know if viscous is bad. When tuning right gradually you can hear a loud audible pop/ clunk heavy in floorboard. As well as what sound like. A growling bearing noise. I have drained all fluids from everything looking to pin point issue. Thought it was in front diff so tore down and changed all bearings up front they were severely pitted. Gears were fine surprisingly. Any how then reinstalled so drove again. Then blew a planetary in stock Trans. So installed new built 4l60e Trans (not the old one). So then I did all my engine mods and noise persists.

Kinda makes me mad just shoved a **** ton of $ in this truck. Fixing several things but the one thing I was after persists. And it only does it while driving tried seeing if noise continues on hoist but no luck. Wheel bearing tight all four corners. Axles show no signs of bearing locking up. Or blueing!

Any ideas? Kinda leaning towards viscous in t case is wore out. Thoughts?

 

I think a member here makes some, check the member made section. With that said, there is really no need for them unless you just want to feel the engine shake the truck.

stock driveshafts fail over 100mph and 60e's grenade randomly, even built ones.

No idea about the tcase.

 

I just welded my motor mounts together, and I am very happy with them.

Look in this link about half way down to test the viscious coupler.

https://www.performancetrucks.net/fo...e-info-229733/

 

Thank you for that! ^^^ much needed read and explained a lot. Had no idea how to test for that dam thing.