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#1 |
Registered User
Join Date: Feb 2018
Location: kona hawaii
Posts: 41
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Hello Folks
I plan on dropping my c-10 come spring (70) . It will be a static drop no air bags , I don't think I can swing the cost for that. Thinking either 4 " to 5 in the front, with drop spindles (2.5") and 2" drop springs, or maybe 3" drop springs, not sure where either will land. I have to study some dropped trucks that are 4/6 or5/7 to get an idea on stance. It will be on 15" wheels.. maybe 18" someday.. but not at first. With a 2" or 3" drop spring does the alignment and tire wear go way up? I think I remember that the drop spindles don't, but springs can cause issues. is 3" to much? Figure I'll drop the front get it where I want it then figure out the rear. At what point do you need the notch over the axle? Thanks for any info or guidance with this.. Eric |
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#2 |
Registered User
Join Date: Dec 1999
Location: Austin, TX, USA
Posts: 7,720
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Re: Drops and tire alignment issues and wear
Problems seem to start with the 3" spring. I have 2" springs and 2 1/2" spindles on the front of mine and it drives great, steers great and has no tire wear issues.
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44 Willys MB 52 M38A1 64 Corvette Coupe 68 Camaro 'vert LT1 & TH700 69 Z/28 355 12.6's @110 69 Chevy Short Step 4 1/2"/7" drop 72 Jimmy 4WD 4spd 4" & 35's 02 GMC 2500HD 4x4 Duramax |
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#3 |
Registered User
Join Date: Jun 2014
Location: Mocksville, NC
Posts: 1,748
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Re: Drops and tire alignment issues and wear
My truck currently has 4" front springs and 5" rear springs (plus a 2.5" stepped frame). Eventually I will add 2.5" spindles and 2" blocks. In regards to tire wear, you will definitely need an alignment with drop springs. Even with my 4" springs though, I was able to get the alignment in spec. One thing to note is that if you go to 3 or 4" springs up front, you will probably need the shock relocation bracket or else your shocks will bottom out. You will also have to cut down your bump stop. In the rear with my 5" springs I have 2" of travel. So far I have not bottomed out but a notch would be wise (which I will eventually do). You will also need the shock relocation brackets out back if you go this low. You may even need to adjust your pinion angle. Most don't but it does happen and if you pick up a vibration you know it's most likely this. That's what happened on mine. Lastly, an adjustable track bar would be a good idea too because the rear will shift over a bit being that low. The stock bar is pretty small and non adjustable.
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Builds: Green Gus the 68 C10 ; Sullii the 72 1500 - Instagram: @dr.hewitt - C10 Concept/Development Photos: Master Thread |
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#4 |
Registered User
Join Date: Aug 2015
Location: Alcoa;Tn
Posts: 208
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Re: Drops and tire alignment issues and wear
I did 2 1/2 ece spindles and 1 1/2 ece springs up front.I wanted 2 inch springs but the tech guy I spoke with asked,Are you going to drive it.If so I recommend 1 1/2 so it wont bottom out.He was right.Cut my bumpstops in half and it does drive great. I have to really drive it hard to bottom it out.I swapped rear coils for 2500 lbs bags for 6 inch drop with NO LIMIT shock relocaters and panhard bar.I cant say enough about Robs stuff.He knows what he is talking about.If you lower the rear to where the housing touches the frame you only have 3/4 inch before center section hits the bed floor;less if wooden floor.So unless you raised the bed floor a c-notch wont help much.I need to get 1 1/2 lowering blocks for the rear so I can run a little more air pressure in the rear for a better ride.
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'71 Cheyenne Super LWB - Second Owner in 39 Years! '70 CST/10 SWB - Soon to be Daughter's truck when finished Last edited by 71cheyennesuperlongb; 02-11-2018 at 10:03 PM. Reason: forgetsomething |
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#5 |
Registered User
![]() Join Date: Jan 2011
Location: Chattanooga TN
Posts: 6,208
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Re: Drops and tire alignment issues and wear
2.5" spindles, 2" drop springs. 5" springs in the rear, 1.25" drop blocks plus a pinion shim (maybe another 1/4" hard to say) 255/45/20 on the front, 295/45/20 on the rear. Pics on my build thread.
I'm not a big fan of anything over 2" front drop spring. It makes the spring really short and difficult to get the alignment back in spec. For example, if you go over a hill really fast your spring could come out of the pocket. Welcome to the board !
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Chad 1967 C10 SWB - Project Savannah - 6.0/4L80 *Currently underway* 1968 C10 SWB - TOTY 2018, 50th Anniversary Tribute Project * Sold * Pride and Joy 1986 Silverado Short Fleet - Scarlet *Sold* 1985 Silverado Short Fleet *Sold* 2022 Jeep Gladiator Mojave 2001 Jeep Cherokee XJ 4x4 - Lifted, Built 1992 Jeep Cherokee XJ 4x4 - Lifted 2013 Honda Accord EX-L v6 Coupe 6spd (wife's ride) |
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