Ordered a Pro Comp 4" lift kit. Will I need driveshaft modifications?

[TheBFA]

I have a 94 V6 5 speed and ordered the Pro Comp K5061B kit. I'm still waiting on it to arrive, but have been going through the instructions to make sure I get as prepared as possible, because I'd like to get it done only working Friday afternoon and all day Saturday to get an alignment on Sunday and be able to drive to work on Monday. In the instructions, it says major modifications may be needed on the drive shaft on SOME V6 models. I tried doing some searching, and came up with info regarding the pinion pointing upwards from a lift, causing vibrations. This kit comes with track bar relocating brackets, but I can't find any info to determine if I need to do anything else, and if major modifications are needed, what they would be. I'd rather know in advance, instead of finding out in the middle of my install on my daily driver.

Edit: the actual note says "PLEASE NOTE: ON SOME V6 MODELS, A HIGH MISALIGNMENT
DRIVESHAFT MAY BE REQUIRED IF THE ORIGINAL EQUIPMENT DRIVE-
SHAFT BINDS AT THE CONSTANT VELOCITY JOINT AFTER THE LIFT KIT
IS INSTALLED."

And I don't know if it makes a difference, but I have 310/75/16 tires, so almost 35s, and 1.25" spacers on the rear and 1.5" on the front

 

[RonJR]

My guess is they're talking about the front CV axle shafts. Toyota calls those "drive shafts", and they call the shaft that runs from the tcase to the diff a "propeller shaft". Raising your front diff with a lift could put the inner CV joints in a bind, especially at full suspension droop.

Rear "propeller" shaft vibration is also a possibility if the u-joint angles get too high, but on a stock vehicle, the rear propeller shaft has no CV joints to bind.

 

[Dropzone]

are you still planning on running the spacers?
eliminating those will make life easier on your drive shaft and CV's

 

[TheBFA]

My guess is they're talking about the front CV axle shafts. Toyota calls those "drive shafts", and they call the shaft that runs from the tcase to the diff a "propeller shaft". Raising your front diff with a lift could put the inner CV joints in a bind, especially at full suspension droop.

Rear "propeller" shaft vibration is also a possibility if the u-joint angles get too high, but on a stock vehicle, the rear propeller shaft has no CV joints to bind.

I just now saw these replies. The front axles are even better than they were before the lift. The front diff dropped down with the kit, and the axles look more relaxed. I didn't notice until I was installing this that there were 2" ball joint spacers installed, and the axles looked pretty ridiculous at the angles they were at with the diff in the stock location. I think the way they worded it as singular threw me off. I'm very familiar with what a CV axle is, and not sure how I missed that part.

 

[TheBFA]

are you still planning on running the spacers?
eliminating those will make life easier on your drive shaft and CV's

I'm stuck with the spacers for now with the wheels I'm running. The tires will rub the UCAs if I don't.

 

[BigRyan1986]

I have a procomp lift on my 4runner. I have offset rims to take care of the tire problems. I havent encountered any driveline issues. My kit had a diff drop so my cv's were also fine. You can check out my pics

 

[TheBFA]

I have a procomp lift on my 4runner. I have offset rims to take care of the tire problems. I havent encountered any driveline issues. My kit had a diff drop so my cv's were also fine. You can check out my pics

Did you install the limiting straps? In the instruction manual, it says to install the side with the offset bracket on the lower shock mount, but the straps included didn't have an offset bracket like it showed in the instructions. They are flat brackets and won't mount there because it hits the shock body. I called ProComp about it and they said they only make that one kind. That's even after I quoted from the instruction manual that says to specifically use the offset side, and it shows it in the picture. But the person I talked to swore up and down that they never made that kind.

 

[BigRyan1986]

I don't have any limiting straps. My lift is old and came off of a parts truck I bought.