Factory Front Spring Rates and Lowering

[josh@thedieselcartel]

Anyone have a chart or list of all the spring rates that are available for 6.7 trucks?

What spring would effectively lower a truck?

 

[zporta]

This is what I found when I typed in the part no. on my truck
Mine came with the 6k
• 4000lb. 5C34-5310-AHC
• 4400lb. 5C34-5310-AGC
• 4800lb. 5C34-5310-AFC
• 5200lb. 5C34-5310-AEC
• 5600lb. 5C34-5310-ADC
• 6000lb. 5C34-5310-ACC

 

[josh@thedieselcartel]

Hmm nice. Wonder what would happen if one was to put in those 4k pounders


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[MorganM]

Coil Spring Specialties made a pair of springs for me with the stock rate, but 3" lower. Was in the bumpstops too often, and I'm using very thin bumpstops.

I would think while the 4000# spring would look great- it would ride horribly.

 

[josh@thedieselcartel]

Coil Spring Specialties made a pair of springs for me with the stock rate, but 3" lower. Was in the bumpstops too often, and I'm using very thin bumpstops.

I would think while the 4000# spring would look great- it would ride horribly.

Whats on your truck now Morgan? Height looks great. Any driveshaft hitting the floor problems? I really want to lower 1" or maybe slightly more. Plan to run a 22x12 and 305/40/22 Tire.

 

[zporta]

Josh what springs are on your truck now?

 

[josh@thedieselcartel]

I am going to have to check. This is for my new regular cab project. Haven't even driven the thing yet lol.

 

[zporta]

Maybe find someone that has the smaller lb spring and we can do a measurement comparison.

 

[MorganM]

Whats on your truck now Morgan? Height looks great. Any driveshaft hitting the floor problems? I really want to lower 1" or maybe slightly more. Plan to run a 22x12 and 305/40/22 Tire.

Thanks, I've not had any clearance problems. Well aside from the frame interference. In the back I have DJM shackles with the factory block deleted. Shortened bilsteins too. Scott at Deaver helped source the parts.

I'm running 305/55 Wildpeaks on platinum wheels.

I'm using a second set of coils I had made that are 15% stiffer and .5" taller than the first pair. I seldom hit the stops, but it does ride stiff.

To do it again, I probably wouldn't go past 1.5"...maybe 2" max. Try to balance ride height with ride comfort.

 

[josh@thedieselcartel]

Looks like my truck has the AEC springs in it. 5200lb.

Anyone have input on what I can put in it to lower it an inch and ride good? I plan to change shocks too.

 

[Trevor008]

I know Morgan at Midwest had or has 4400lb springs on his 15. He might have the info you're looking for

 

[bigrpowr]

mine are 4400#