Anyone know where I can get some 3" flat blocks. I would like to raise the rear of the truck 1" from where it's at with the 4.5" tuff country lift kit. I have the 3" tapered ones but don't like the fact that the diff is tilted back and how would I know if I had the oil level correct when refilling.

thanks for any help

Jamie

 

Take your blocks to your local machine shop and have them milled.
Topper

 

keep the tapered blocks.. they line up the driveshaft reducing u-joint wear and vibration...

 

1. How do I change my diff oil and refill to the proper level?

2. I was told there needs to be a little angle fromt he diff to the drive shaft so the needle bearings in the u-joint continue to lubricate themselves.

Jamie

 

Leave the taper on there. They are on there for a reason. Even when stock there is a slight tilt to the housing. Just fill it to the bottom of the plug hole and that should account for the extra slope.

 

If you are really concerned about the fluid level you could park it on the downward part of your driveway or a small hill to level out the rear end???

In my last truck I went through many headaches with the Driveshafts... The less the U-joint has to work the better...

On some of the bigger lifts they even drop the center bearing (if Equiped) to even out the angle on the center bearing.

This is all based on my last truck.. a 79 chevy Stepside SB with 7" of lift.. and lots of driveshafts laying on the ground before I took it to a driveline specilist and had him put special yokes, u-joints and dirveshafts in...

Gerry

 

THIS SHOULD BE THE VERY LAST POST TO THIS QUESTION. LEAVE THE TAPPERED BLOCKS INSTALLED BECAUSE IF YOU PUT IN FLAT BLOCKS YOUR U JOINT WILL WEAR OUT VERY PREMATURELY. That is why they sent you tappered blocks, set to your lift amount and wheelbase ajusting for modifications. Your diff fluid will be juuust fine.

 

My 3" tapered blocks I bought seperately. The kit comes with 2" flat blocks. I still had to drop the carrier bearing 1 full inch to get the shudder out of the launches.

Thanks for the help

Jamie