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Time for shock replacement?

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Old Jun 13, 2024 | 04:12 PM
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Time for shock replacement?

I have this issue with a bunch of road noise up front, more than there should be. Now I looked at my shocks, and I'm not certain, but they look original. Maybe a good idea to replace them? I've heard good things about Bilstein 4600's but am open to other options.

Also if I replaced the front, would I need to do rear as well?

Driver

Passenger

Doesn't look too sagged, even on uneven ground.


Note: front tires are more worn than rear, however the whole tire is wearing evenly.
​​​​​​
 
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Old Jun 14, 2024 | 12:04 AM
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I assume you are referring to noise that transmits through the frame and body. Old bushings get hard and dry and conduct sound better than new, soft ones. Replacing the shocks, and any bushings, might help with the noise. How much is anyone's guess.

Some interior sound deadening pads might also help, especially in the floor.
 
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Old Jun 14, 2024 | 12:21 AM
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Originally Posted by seschenburg
I assume you are referring to noise that transmits through the frame and body. Old bushings get hard and dry and conduct sound better than new, soft ones. Replacing the shocks, and any bushings, might help with the noise. How much is anyone's guess.

Some interior sound deadening pads might also help, especially in the floor.
It's actually louder outside the truck, like when I roll down the windows. It's not a hum, more of a... "diesely" sound. (Only on asphalt, not engine or transmission related)

I will try and record it when I get the chance.
 
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Old Jun 14, 2024 | 10:51 AM
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Road noise video

https://photos.app.goo.gl/ZL8CxzXUVp7GNMQV6

Window is down in video
 
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Old Jun 14, 2024 | 11:07 AM
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Originally Posted by Junktownbill99
It's not a hum, more of a... "diesely" sound. (Only on asphalt, not engine or transmission related).
Is it speed related? From what I could tell, it sounded like tire noise.
 
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Old Jun 14, 2024 | 11:12 AM
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Originally Posted by My4Fordtrucks
Is it speed related? From what I could tell, it sounded like tire noise.
I do believe it is tire noise, however it seems rather excessive, it's been like that since I got it.

Yes it is speed related
 
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Old Jun 14, 2024 | 11:32 AM
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Yep, tire noise. Coarse-tread tires will do that. Also, they may appear to be worn evenly, but they never really are, at least not on our light-weight vehicles. Take a side look and you'll probably see some level of cupping on each **** of the tread. This disparity in surface contact as the tire rolls along will also increase tire noise. It wouldn't hurt to rotate them to even this out front-to-rear a little better.

Also, it's good practice to replace shocks in pairs. Both fronts/rears, or all four, at the same time. If those are original, then they are certainly due. You won't notice a change in tire noise, but the smoother ride might distract you from it a little.
 
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Old Jun 14, 2024 | 03:15 PM
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Originally Posted by Junktownbill99
I have this issue with a bunch of road noise up front, more than there should be. Now I looked at my shocks, and I'm not certain, but they look original. Maybe a good idea to replace them? I've heard good things about Bilstein 4600's but am open to other options.

Also if I replaced the front, would I need to do rear as well?

Driver

Passenger

Doesn't look too sagged, even on uneven ground.


Note: front tires are more worn than rear, however the whole tire is wearing evenly.
​​​​​​
Based on the first two pictures you may want to consider replacing your brake hoses as well.
 
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Old Jun 14, 2024 | 03:58 PM
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You guys are spot on, definitely the tires, one of the fronts wore "lumpy"

https://photos.app.goo.gl/3QmUJ7x8qaEZwR5t5

First tire is a rear, second is the worst front.

I'm going to go ahead and say these have never been rotated since they were put on. So I rotated em properly and will let them all wear out, so I can replace them.

Back to the shocks question, I would like to put 285s on there, and will probably get a leveling kit for it. Would the Bilstein 4600's work with a leveling kit? Id rather not go up to the Bilstein 5100's as I plan on leveling, not lifting (unless somebody has a 3" lift kit they'll give me for free)

(I'll consider brake lines)
 
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Old Jun 14, 2024 | 06:43 PM
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I've heard Bilstein are good, but I'm out on the shock question. Mine are probably Monroe or some generic brand. But, I did get new springs (MOOG CC824, maybe 1.5-2" lift) to level mine and kept the same shocks, if that helps.
 
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Old Jun 14, 2024 | 08:26 PM
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Here's what I have to say without reading the entire thread, but seeing the original post photos.....you absolutely can't and will never go wrong replacing wear parts while chasing a problem. A shock absorber is a wear item, and yours obviously are old enough to be trash. So, replacing things that should be replaced anyyway while chasing other issues, even if it's not the likely cause, is not wasting resources.
 
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Old Jun 15, 2024 | 01:02 PM
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Originally Posted by '89F2urd
Here's what I have to say without reading the entire thread, but seeing the original post photos.....you absolutely can't and will never go wrong replacing wear parts while chasing a problem. A shock absorber is a wear item, and yours obviously are old enough to be trash. So, replacing things that should be replaced anyyway while chasing other issues, even if it's not the likely cause, is not wasting resources.
Even though these shocks do surprisingly work still (truck isn't bouncy) I figured new ones would be eons better. So I'm probably gonna do it.

My road noise issue was pointed out as being my worn out front tires (see short videos I posted) I rotated them to wear out the good ones.

I've asked if the Bilstein 4600's would work if I decided to get a leveling kit (I want 285s, and I'm more inclined to level the truck rather than lift it)

Thanks for the input.
 
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Old Jun 15, 2024 | 01:45 PM
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Yeah the regular spec 4600's will work with a level. You'll limit down travel a bit but nothing terrible. If you go to a longer shock, you'll need to lengthen the bump stops to limit up travel (so that the shock fully collapsed isn't the bump stop).

I suggest the moog cc824 springs over the commonly used cc844 for a level. I had 844's for a few years and they are stiff! I've now got cc826, but they're too long for just a level, more of a lift spring but with a good spring rate like the cc824.
 
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Old Jun 15, 2024 | 07:12 PM
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Bilstein 4600's coming in the mail, $339.40 total. Thanks everyone.
 
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