1972 Chevelle wagon rear springs - Chevelle Tech
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post #1 of 19 (permalink) Old Jun 23rd, 19, 4:37 PM Thread Starter
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1972 Chevelle wagon rear springs

Since obviously a wagon weighs more in the back than either the El Camino or regular Chevelle, what's available for rear coils? Thank you...
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post #2 of 19 (permalink) Old Jun 23rd, 19, 5:01 PM
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Re: 1972 Chevelle wagon rear springs

Moog makes a cargo style spring, I had them on my 72 el camino but they were way too stiff, might work for you though since you have about 500 more pounds back there.
https://www.summitracing.com/parts/m...odel/el-camino

Also FYI, they are slightly bigger in diameter than stock and a bastard to get them on by yourself, and the usual air bag kit commonly used doesn't work to good with the cargo springs, bags won't touch the springs till 20 plus psi.

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post #3 of 19 (permalink) Old Jun 23rd, 19, 5:13 PM Thread Starter
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I'd seen those springs and they definitely are beefy. I'm trying to find some that aren't progressive so I can trim them a bit to get the car to sit where I like.
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post #4 of 19 (permalink) Old Jun 23rd, 19, 6:38 PM
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Re: 1972 Chevelle wagon rear springs

I don't think its a good idea to cut the rear springs on an A body due to the design of the springs (tapered on both sides), it wouldn't fit right and might pop out (unless i'm missing something on the 72 wagon ?). Maybe call UMI and see what they have to offer? Other than that you would have to get a custom spring built, I'm guessing you want lower that stock? Perhaps just run a full air ride system in the back, might be cheaper in the long run.

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post #5 of 19 (permalink) Old Jun 23rd, 19, 9:28 PM Thread Starter
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Keeping them centered isn't an issue, I just don't want progressive springs. I was hoping someone knew a part number or brand for stock wagon springs. All the springs I see are for a standard Chevelle
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post #6 of 19 (permalink) Old Jun 23rd, 19, 10:01 PM
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Smile Re: 1972 Chevelle wagon rear springs

Do 72 wagons use a double conical spring? Asking for a friend.

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post #7 of 19 (permalink) Old Jun 23rd, 19, 11:55 PM Thread Starter
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If you think inside the box, yes they need to be conical at both ends. I don't own a box...
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post #8 of 19 (permalink) Old Jun 24th, 19, 12:14 AM
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Re: 1972 Chevelle wagon rear springs

I used NAPA springs listed as HD El Camino springs. Lowered the rear 2" from the new wagon springs originally installed. Have a part number but not handy at the moment.

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post #9 of 19 (permalink) Old Jun 27th, 19, 11:29 PM
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Re: 1972 Chevelle wagon rear springs

I have a TRW book from 1987 that lists part# CS6381 Same part # for all 68-72 Chevelle wagons regular or heavy duty for the rear
I got the book from an old wheel alignment shop. These are the specs


Wire Diameter .0650 inches
Height 9.0 inches
Load (LBS) 1062
Spring Rate (LBS/INCH) 198.9
Inside Diameter 5.560
Free Height 14.340

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post #10 of 19 (permalink) Old Jun 27th, 19, 11:41 PM
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Re: 1972 Chevelle wagon rear springs

The NAPA springs used in my wagon were 277-5165, no specs available. Listed as variable rate, ride nice and gave the ride height I wanted.

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post #11 of 19 (permalink) Old Jun 30th, 19, 3:51 PM Thread Starter
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Thanks guys! The 6381's were what I finally found. I'll start with these and go from there...
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post #12 of 19 (permalink) Old Jul 12th, 19, 9:15 AM Thread Starter
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So, here's how the rear of my wagon turned out. I'd ordered a pair of Moog 6381 springs because I knew they were designed for the weight of the wagon and weren't progressive wound so I could trim them and not worry about it getting weird. Everyone worries about the "pigtail" on the end of the spring without looking at "cup" mount in the frame rail. Chevy was always nice enough to overthink these things and use the same part on numerous vehicles. The OD (fat part) of the coil is a hair over 7" while the cup mount in the frame is the EXACT SAME SIZE. I used a cutoff wheel in my angle grinder to remove 1/2 a coil from where the flat part of the coil started going down. The initial cut lowered the back 1 1/2", so now I could "fine tune" the rear to where I wanted it. The left rear of the car drooped more than the right side and that bugged me immensely! After putting the coils back in, it was still 3/4" lower on the driver's side, so now the creative part starts. I took the right coil out, took a 1/4 coil off, which brought it down 1/2." Another 1/8 of a turn and the car is perfectly even! I'm stoked with how it sits and everything feels nice and smooth! Now to measure center to center on the rear shocks to figure what I need to run back there...
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post #13 of 19 (permalink) Old Jul 13th, 19, 7:58 AM
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Re: 1972 Chevelle wagon rear springs

I think the front end needs to come up an inch or two..
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post #14 of 19 (permalink) Old Jul 13th, 19, 9:25 AM
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Re: 1972 Chevelle wagon rear springs

Nice looking wagon.


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post #15 of 19 (permalink) Old Jul 13th, 19, 6:23 PM Thread Starter
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Thank you! Why would I "raise" the front end? The wheel and tire combination and stance is as dead on as I can make it...
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