Rear Aluminum Degree Shim?

2000F150SAS

Well-Known Member
Joined
Jun 13, 2007
Location
Fuquay-Varina, NC
Rear Aluminum Degree Shim Question:
I'm running lifted leaf springs, 2.5" block and 6 Degree ALUMINUM Shims and these thing always creak, sounds like they are loose. We had a pair in my son's Bronco and they did the same think but once we removed them the creak was gone.
Is this typical with aluminum shims and steel blocks?
Is it worth replacing the shims with cast shims?
 
2000F150SAS said:
Rear Aluminum Degree Shim Question:
I'm running lifted leaf springs, 2.5" block and 6 Degree ALUMINUM Shims and these thing always creek, sounds like they are loose. We had a pair in my son's Bronco and they did the same think but once we removed them the creek was gone.
Is this typical with aluminum shims and steel blocks?
Is it worth replacing the shims with cast shims?
Click to expand...

I put an assload of stress on my jeep not long ago, was running a block for the trip due to lack of cash for the new leafs, somehow managed to crack/crush the pinion shims I had, they were aluminum, so I will be getting cast next time around.
 
If you run aluminum shims or blocks, prepare to deal with a broken shim or block on the trail. Seen it too many times.
 
I'm not a fan of the aluminum Shims or the 2.5" block but like you said springs cost too much. Some day I'll have the money to spend on springs.

Thanks
 
Is the block steel or aluminum? If the block is aluminum save some cash for rear driveshaft and pinion yoke too. When it breaks, it won't be pretty.
 
RenegadeT said:
Is the block steel or aluminum? If the block is aluminum save some cash for rear driveshaft and pinion yoke too. When it breaks, it won't be pretty.
Click to expand...

cast block and aluminum shim.

Plan on replacing my spring perchs down the road and installing at 6 degrees.
 
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