AcDelco coil springs
#1
AcDelco coil springs
has anyone ever used the AcDelco replacement springs on their Iroc z's, i know most people use moog 5662/5665 springs but was just wondering about these as summit racing and rock auto both carry them
rear - https://www.rockauto.com/en/moreinfo...035548&jsn=265
front - https://www.rockauto.com/en/moreinfo...35548&jsn=1379
rear - https://www.rockauto.com/en/moreinfo...035548&jsn=265
front - https://www.rockauto.com/en/moreinfo...35548&jsn=1379
#2
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Car: 92 Camaro RS
Engine: LS1
Transmission: T56
Axle/Gears: 10bolt w3.42 Torsen
Re: AcDelco coil springs
AC Delco OE replacement parts are always good. Should restore factory performance. New bushings in the a-arms, strut mounts, ball joints, and sway bar end links too while you have it apart as the originals are now 30+ years old, rubber doesn't live that long. This is great for helping restore factory ride and performance. Also a great time to replace struts if they're old, worn, or just not the performance level you're looking for. Struts/shocks are one thing you can't spend too much on.
The specs of the front springs look good, the front rates are good and a constant rate. I don't really understand the rears rates they listed as 518 lbs is higher than about any race spring I've ever seen. 100-150 pounds is around stock range and works great for street cars. My rear weight jacks have 250# springs for reference. Rears you've shown are also variable rates which works fine in a street car but I'd get a constant/linear rate if performance is your goal.
There's not one clear answer to your question really. The "best" springs for you and your car really depends on your goals for the car and what your expectations are from them.
The specs of the front springs look good, the front rates are good and a constant rate. I don't really understand the rears rates they listed as 518 lbs is higher than about any race spring I've ever seen. 100-150 pounds is around stock range and works great for street cars. My rear weight jacks have 250# springs for reference. Rears you've shown are also variable rates which works fine in a street car but I'd get a constant/linear rate if performance is your goal.
There's not one clear answer to your question really. The "best" springs for you and your car really depends on your goals for the car and what your expectations are from them.
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motoj550 (01-06-2021)
#3
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Re: AcDelco coil springs
AC Delco can span everything from an original equipment part, as in the real deal parts the car left the factory with, to whatever you'd find at your local Auto Zone under a no name label, except stuffed into an "AC Delco" branded box. It's always best to assume you're buying a rebranded part to avoid disappointment.
I wouldn't be the least bit surprised if the "AC Delco" springs are "Moog" springs in an AC Delco box.
I wouldn't be the least bit surprised if the "AC Delco" springs are "Moog" springs in an AC Delco box.
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motoj550 (01-06-2021)
#4
Re: AcDelco coil springs
it does say in the description that the rears are 500 lbs. (per pair). was afraid of using the moogs everyone uses because of sitting higher than normal, i just want it to sit and ride like factory, maybe just a little stiffer.
Last edited by motoj550; 01-06-2021 at 08:23 AM.
#6
Re: AcDelco coil springs
not yet been too cold here in Illinois but here really soon tho, still haven't decided yet but still leaning towards the Ac Delco's, their cheap enough and easy enough to change in the rear, that's where i'm starting 1st.
#7
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Car: 89 Firebird
Engine: 355 TBI
Transmission: 700R4
Axle/Gears: 10 Bolt.Posi-3.73s
Re: AcDelco coil springs
I used AC Delcos this last time. Sit a lil high so I cut em down bout a round. I like em
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#9
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Car: 89 Firebird
Engine: 355 TBI
Transmission: 700R4
Axle/Gears: 10 Bolt.Posi-3.73s
Re: AcDelco coil springs
Just about positive i did. Seem like 3/4 - 1 inch was a happy medium.. My stock ones were a full 2in shorter but I'm sure some wear + settling them being 89k stock springs.
#11
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Car: 1985 Iroc
Engine: LB9, V8 5.0L 305 TPI
Transmission: 700R4
Axle/Gears: G80, ?
Re: AcDelco coil springs
Keep us posted, I too am shopping for shocks and springs for my 85 IROC...I've also been told that the Koni Twintube (8241 1140 Sport 93-02 Camaro) will fit into my 1985 IROC, anyone want to confirm or let me know if they have used them?
Last edited by 1985_IROC; 03-01-2021 at 11:22 AM.
#12
Re: AcDelco coil springs
just ordered the rear ac delco springs #88913786 and the kyb gas adjust shocks, suppose to be here tomorrow so hopefully get them in this weekend and i'll let ya know what i think of them.
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1985_IROC (03-04-2021)
#13
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Re: AcDelco coil springs
Hmm, I'm kind of worried about the springs, it seems they may not be a good match for the IROC:
This is what they replace according to wholesalegm
Please provide pictures of ride height and what you think the general feel is like when you get them in!
Hopefully you can save me from a return!
This is what they replace according to wholesalegm
Please provide pictures of ride height and what you think the general feel is like when you get them in!
Hopefully you can save me from a return!
Last edited by Annihilate; 03-05-2021 at 04:07 AM.
#14
Re: AcDelco coil springs
summit racing shows it's for them and others, i think these days manufactures make them to work in most vehicles nowdays, 500 lbs. per pair is higher than stock for an iroc, we'll see, fed ex be here today with them
#16
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Re: AcDelco coil springs
The problem you run into with any aftermarket spring is that they're not application specific. You're talking about if they're correct for an Iroc, when GM used 3 or more different spring combos on virtually identical Irocs in the same year. Most aftermarket springs are intended to fit multiple applications. They're a "one size fits most" solution. They sort of fit a wide variety of applications, but on the flip side they don't fit any of them perfectly.
You can do a reverse search to see what cars a part fits on Rock Auto by clicking the part number in the catalog. The front springs say they fit thirdgens and S-series trucks, the rears supposedly fit 82-02 F-bodies. Given that info, I wouldn't expect them to be a great match to a performance oriented thirdgen.
This doesn't just apply to AC Delco, it's the problem with Moog and other springs as well. They're a generic spring that will work in a pinch, but a far cry from a new original equipment spring.
You can do a reverse search to see what cars a part fits on Rock Auto by clicking the part number in the catalog. The front springs say they fit thirdgens and S-series trucks, the rears supposedly fit 82-02 F-bodies. Given that info, I wouldn't expect them to be a great match to a performance oriented thirdgen.
This doesn't just apply to AC Delco, it's the problem with Moog and other springs as well. They're a generic spring that will work in a pinch, but a far cry from a new original equipment spring.
#17
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Car: 1985 Iroc
Engine: LB9, V8 5.0L 305 TPI
Transmission: 700R4
Axle/Gears: G80, ?
Re: AcDelco coil springs
How do we know if we actually need to replace the springs any how? Is everyone just replacing because of age?
#19
Senior Member
Re: AcDelco coil springs
has anyone ever used the AcDelco replacement springs on their Iroc z's, i know most people use moog 5662/5665 springs but was just wondering about these as summit racing and rock auto both carry them
rear - https://www.rockauto.com/en/moreinfo...035548&jsn=265
front - https://www.rockauto.com/en/moreinfo...35548&jsn=1379
rear - https://www.rockauto.com/en/moreinfo...035548&jsn=265
front - https://www.rockauto.com/en/moreinfo...35548&jsn=1379
#21
Re: AcDelco coil springs
just got mine on the rear and gotta say i'm very happy with them, compared to the old original ones it sits actually the same height. so over time it'll prob drop a 1/2" or so. handles great, we have a curve outside of town thats sharp and is 45mph, i went in at 65mph and came out at 78mph, curve total length prob bout 300ft total. made me Happy here bout a month gonna change out front also
#23
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Car: 1985 Iroc
Engine: LB9, V8 5.0L 305 TPI
Transmission: 700R4
Axle/Gears: G80, ?
Re: AcDelco coil springs
Hahaha, drive fast and speed into the turns! Appreciate the feed back, helps to know that the ACDelco springs are acceptable. I’m using the bump stops when the kids are in the back seats. Hey, did you replace the spring insulator, or not necessary? Just curious before I start ordering parts...
#25
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Car: 1985 Iroc
Engine: LB9, V8 5.0L 305 TPI
Transmission: 700R4
Axle/Gears: G80, ?
Re: AcDelco coil springs
Good deal, I am jerking around with the interior. Just got the headliner, sails, and sun visors done. Still putting them back in. Kinda weird to see the contours again, with the old fabric hanging, very happy with this repair.
#27
Re: AcDelco coil springs
Hahaha, drive fast and speed into the turns! Appreciate the feed back, helps to know that the ACDelco springs are acceptable. I’m using the bump stops when the kids are in the back seats. Hey, did you replace the spring insulator, or not necessary? Just curious before I start ordering parts...
The following users liked this post:
1985_IROC (03-08-2021)
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1985_IROC (03-09-2021), 777Shock777 (05-16-2021), pirateofms (07-27-2021), Reddragon88gta (04-29-2021)
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