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Old 11-18-2018, 09:06 PM   #1
Miell
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1968 C10 with coil springs, how to....?

My 1968 C10 does not handle loads very well, so I would like to beef it up some, not necessarily lift the rear end, just beef it up some.

Any ideas?

Rick
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Old 11-19-2018, 12:06 AM   #2
LockDoc
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Re: 1968 C10 with coil springs, how to....?

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Originally Posted by Miell View Post
My 1968 C10 does not handle loads very well, so I would like to beef it up some, not necessarily lift the rear end, just beef it up some.

Any ideas?

Rick

Some trucks had factory option helper springs. They come up for sale on the parts boards every once in a while. Here are a couple of pictures of them. The rear frame rails have been cut off in the second picture so it looks out of proportion.

LockDoc
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Old 11-19-2018, 01:42 AM   #3
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Re: 1968 C10 with coil springs, how to....?

Here's a better view of the one in the picture of my '69 C20 frame that LockDoc posted above.
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Old 11-19-2018, 03:12 AM   #4
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Re: 1968 C10 with coil springs, how to....?

I had the same issue with my '70 C10. Replaced the old stock coil springs with heavy duty progressive load coils & that did the trick!
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Old 11-19-2018, 06:41 AM   #5
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Re: 1968 C10 with coil springs, how to....?

https://www.airliftcompany.com/produ...air-lift-1000/
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Old 11-19-2018, 07:23 AM   #6
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Thumbs up Re: 1968 C10 with coil springs, how to....?

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X2 on the air lift and if you want it to handle even better get the No Limit shock relocator kit. I have both on my 71 C 10 and man does it drive good.


http://67-72chevytrucks.com/vboard/s...d.php?t=688743
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After talking to tech support at Air Lift I have found out that the kit I need is 60811. Per the measurements I gave them. Ride height of truck inside spring and inside diameter of springs.
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Old 11-19-2018, 08:47 PM   #7
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Re: 1968 C10 with coil springs, how to....?

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Originally Posted by Miell View Post
My 1968 C10 does not handle loads very well, so I would like to beef it up some, not necessarily lift the rear end, just beef it up some.

Any ideas?

Rick
The helper springs or camper springs add about 500 pound capacity to the truck. I bought a set and am in the middle of refinishing them prior to install. I actually ended up buying a second set, don't ask why!

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Old 11-19-2018, 09:37 PM   #8
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Re: 1968 C10 with coil springs, how to....?

Lots of options here: https://www.truckspring.com/Search.a...n-Parts&page=1
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Old 11-19-2018, 09:39 PM   #9
Rick Bollinger
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Re: 1968 C10 with coil springs, how to....?

I am doing a modest 2 1/2 front - 3" rear drop will the overload springs work with this drop or will I need to do something different? Maybe a pair of flatter leaf springs taken out of a car, cut and drilled to fit? Not meaning to hijack thread just thought it may be relevant.
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Old 11-20-2018, 10:41 AM   #10
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Re: 1968 C10 with coil springs, how to....?

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I am doing a modest 2 1/2 front - 3" rear drop will the overload springs work with this drop or will I need to do something different?
I'm not sure, but you'd need to start with shorter and much stiffer coil springs. When I had my 69 C10, I bought several suspension parts from these guys, including 2" drop rear coil springs and adjustable track bar.
https://www.earlyclassic.com/catalog...=139&keys=rear

I also used these shock mounts to keep the shocks more vertical with shorter springs. Very important if you want the shocks to actually work!
https://www.earlyclassic.com/node/1194

Doesn't look like they sell heavy duty drop springs, but they might be able to point you in the right direction. Call them at 888.777.0395.
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69 C10 LWB -- Bought in 1989, now my son's http://67-72chevytrucks.com/vboard/s...d.php?t=775449
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Old 11-25-2018, 12:16 PM   #11
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Re: 1968 C10 with coil springs, how to....?

Quote:
Originally Posted by Miell View Post
My 1968 C10 does not handle loads very well, so I would like to beef it up some, not necessarily lift the rear end, just beef it up some.

Any ideas?

Rick
Hey Rick, I was just wondering if you had made a decision on what to do with the back of your truck. I've got a 67 shortbed with the same issue. Thx, mike
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Old 11-25-2018, 12:57 PM   #12
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Re: 1968 C10 with coil springs, how to....?

To the OP: Moog #6101 springs should increase the load carrying capability without raising the truck up too much.

Concerning a rear drop AND increased load handling, I'd try lowering springs because they are typically stiffer than stock std duty springs. And if they can't handle a load, then take a look at the helper springs mentioned above or an Air Lift kit.
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82 C10 Custom Deluxe SWB -- original paint, 355/TH350, Vortec heads, GM RamJet 350 roller cam
69 C10 LWB -- Bought in 1989, now my son's http://67-72chevytrucks.com/vboard/s...d.php?t=775449
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