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Discussion Starter #1
I’ve got an 04 RCSB 2wd and I’ve already lowered the back with 2” shackles but my truck measures out to have a 4” drop. When I bought it two years ago it looked Leveled out but the owner said no. (He lied a lot to sell it) I cannot figure out where those 2” went. There’s no drop hanger, the leafs springs have all the leafs in them, there is no block between the leafs and the axle but I believe there wasn’t one anyway on a 2wd. Any suggestions? I want to drop the truck the right way and I can’t if I don’t know what else has been done to it.
 

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Take a close look at the arch on the leaf springs, maybe compare it to a similar truck. Someone may have went old school and took a torch to the springs to take some temper/tensile strength out to lower the truck.
 

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Discussion Starter #5
Image order: Driver Leafs... Passenger Leafs... Drivers Drop Shackle... Front Wheel(w/ measurement)... Rear Wheel (w/ measurement).

The Leafs do look almost straight. I thought they may have been a drop leaf but underneath the leaf, it has the GM part number and "Made in Mexico" stamp.
 

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From what I could see, about 1 & 1/2" difference side to side, guess I'm not knowledgeable enough to know what's exactly going on, perhaps a frame shop could set you on the right track. Couple of side notes, in your signature it says 4.6 L, unless you snuck a Ford by us it might be a 4.3 or 4.8? And congratulations on having such a rust free truck, at least from what I could see of the undercarriage, amazing for an 04!
 

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Discussion Starter #7
Okay thank you. I’ll check one out. And yeah I noticed that too 4.6. I went to Change it and it said I typed 4.3 which is what I have. So maybe a glitch in the matrix or something. I’m not sure. But yeah 04 with no rust, just some surface rust is pretty good
 

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Change both rears springs because they are "fatigued".
Please buy a "very high quality" rear spring and make sure they have a very small arch so they can give you good spring action.

Another thing, "never " load any weight into a lowered truck with flat springs like this. They are not designed to arc inversely.
 

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Discussion Starter #9
Motor City Rick, thank you so much. I’ll look for some good springs. It’s sounds like trash in the rear and I know that what I have done doesn’t help but the fear of the unknown of what the previous owner did doesn’t help
 

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Make sure your shackle bolts are the same holes on each side since I saw 2 positions available.
Look at "compression rates per inch" when buying any springs.

Option "B" is go a frame to spring mounted "air bag system" if you don't want to change springs such as Air Lift has.

Here's some hyper links to start your search:

https://www.bing.com/search?q=air+bags+for+pickup+trucks&qs=LS&pq=air+bags&sk=HS1LS1&sc=8-8&cvid=B0B95DF18F2B48649B75564BAB6AA4E4&FORM=QBRE&sp=3

https://www.sdtrucksprings.com/suspension-air-bags/air-lift-air-bags?msclkid=aa3fb624d363163f229ceae89dc5d163&utm_source=bing&utm_medium=cpc&utm_campaign=Air Helper Springs&utm_term=air lift air&utm_content=Air Lift Air Springs

https://www.suspensionconnection.com/air_lift_suspension.html?utm_source=bing&utm_medium=cpc&utm_campaign=Air-Bags&utm_term=air-lift-company&utm_content=Aif-Lift

https://www.airliftcompany.com/

https://www.performanceonline.com/Airlift-Company/

In my Sonoma which is lowered to ZQ8 standards, I now have to go "air bags" from Air Lift because of all our super chitty Michigan roads hit the axle snubbbers all the time.
 
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