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#836817 - 11/15/10 05:55 PM Re: STICKY: Lowering the Rear of your G Body [Re: ReSSurrected]  
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SickSpeedMonte Offline
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http://www.classicperform.com/chevelle.htm
RCS6034 1967-72 Rear Coil Springs 2" drop, pair

Looks like they bumped the price up now that all us G body guys are buying them.

The picture is just a picture that they use for all of the springs, what comes in the box is pigtailed on both ends.

What I said in my prior post about the advertised drop was wrong, they are 2" advertised drop like I said originally.

#838526 - 11/24/10 07:01 PM Re: STICKY: Lowering the Rear of your G Body [Re: SickSpeedMonte]  
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#851699 - 02/05/11 05:29 PM Re: STICKY: Lowering the Rear of your G Body [Re: SickSpeedMonte]  
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valvefloat ss Offline
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St.Joseph, MI
I have read this post alot and some others. I like the idea of useing the Moog springs from a cost perspective. Some have used the 5662 fbody front spring and a 2" drop spindle. They report good results. Has anyone used the fbody convertable spring 5664? I have been looking at the Moog spring table posted here.
What do fbodies upgrade to? Could we use those springs.

http://jeffd.50megs.com/Moog_Spring_Page.htm


1985 SS, 358 010, art carr 700r4, Comp Xtreme 4x4 cam, 50SeriesFlows,Afterburner headers, ported SR Torquers, 750 3310 Holley, Auburn Posi, 3.73, 3in exhaust, dual electic fans.
#866323 - 04/11/11 03:43 PM Re: STICKY: Lowering the Rear of your G Body [Re: valvefloat ss]  
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wcked_ss Offline
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Norfolk, Virginia
I am done with this portion of my project!!! Total suspension overhaul is complete, along with new Centerline Retros mounted with 245/45/17s up front and 275/40/17s in rear. Nice 2/3 drop with a great stance. I utilized SC&C Street-Comp Stage 2 Plus package, SPC lowering springs, SPC tubular front A-arms, and a new set of Bilstein HD shocks. Hugs the road like expected. Also complete is the addition of Hooker long tube headers (2451-1HKR), true duals, and exhaust dumping out at a 45 chrome tips behihd the rear tires...looks, performs sweet, [/img] and sounds just as good.


1987 Monte Carlo SS
Suspension: SC&C stage II Plus pkg,(f) 245-45-17, (r) 275-40-17, Firestone Firehawk Wide Oval Indy 500, Hooker headers with true duals
http://s1220.photobucket.com/albums/dd458/wcked_ss/?action=view&current=IMG_0084-1.jpg][/URL]
#866324 - 04/11/11 03:46 PM Re: STICKY: Lowering the Rear of your G Body [Re: wcked_ss]  
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[/img]

Last edited by wcked_ss; 04/11/11 03:51 PM.
#878011 - 06/07/11 09:25 PM Re: STICKY: Lowering the Rear of your G Body [Re: wcked_ss]  
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Hailhorror77 Offline
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Just ordered a set of these currnet price is 112 shipped. They were 10 days behind?? and said for an extra 10 dollars they can send them out tomorrow. What a bunch of b.s. Me being in a rush paided it.


'87 SS
#884431 - 07/13/11 02:38 AM Re: Lowering the Rear of your G Body [Re: SickSpeedMonte]  
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pajaronegro98 Offline
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Leander TX
I have an 85 SS with a GN/ rearend and was wondering if I could use my eibach rear lowering springs to lower the rear? Have belltech in the front..

#884474 - 07/13/11 11:18 AM Re: Lowering the Rear of your G Body [Re: pajaronegro98]  
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SickSpeedMonte Offline
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Originally Posted By: pajaronegro98
I have an 85 SS with a GN/ rearend and was wondering if I could use my eibach rear lowering springs to lower the rear? Have belltech in the front..


Yes they will work fine.

#891817 - 08/25/11 07:12 PM Re: Lowering the Rear of your G Body [Re: SickSpeedMonte]  
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Tony_SS Offline
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Add these BMR springs to the mix. They are 2" drop.

Who wants to try them out first????????

http://cgi.ebay.com/ebaymotors/BMR-Fabrication-Lowering-Springs-Rear-SP015R-/330602447121?pt=Motors_Car_Truck_Parts_Accessories&fits=Model%3AMonte+Carlo&hash=item4cf9710111

#891987 - 08/26/11 04:51 PM Re: Lowering the Rear of your G Body [Re: Tony_SS]  
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Tony_SS Offline
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^^^^ Note, those are A-body springs. So I guess they would give us a 3" drop???

Someone needs to try and see. smile

#892222 - 08/27/11 05:09 PM Re: Lowering the Rear of your G Body [Re: Tony_SS]  
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Tony_SS Offline
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Well I just ordered these:
http://www.performanceonline.com/1978-88-Chevy-Buick-Oldsmobile-GM-A-Body-Rear-Coil-Springs-19791/

The come stock, 2" drop and 3" drop. I got the 2" drop. So we'll see how they work.

10% off until the end of Aug too.. but they are only $99 to begin with.

#902440 - 11/05/11 06:13 AM Re: Lowering the Rear of your G Body [Re: Tony_SS]  
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79cmc Offline
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Hubert, NC
Tony,

How did those springs work out for you? I know you had the OPG drops and I loved that stance. I'm about to pull the trigger on my Monte's suspension and I was leaning toward the OPG lowering springs. Any reason you're switching it up?

#914430 - 01/22/12 01:43 AM Re: Lowering the Rear of your G Body [Re: PETER86SS]  
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Furgie Offline
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Rustbeltville,MA
Originally Posted By: PETER86SS
Have always had a pronounced vibration 80-85 mph and up; this is mentioned in tech section as a rear suspension/pinion angle problem without a defined cause. Since I pulled the CC627 coils out in favor of the CC507's it has abated somewhat; the 627's had the rear approx 2" higher than it is now - also had the 5662's in at full length, car was really up high (I called it my 'urban suspension'). Any info on this symptom?


where in the tech section.. as mine has a vib at 60-65 that I've been able to abate somewhat by driving up to 70-75mph drop it in "n" then back into drive and the vib. goes untill you get under 50mph and get back up to 60-65..
it's driving me nuts


Oh when your body starts to shake,It's time to loosen off the brake ,and slam the hammer down
#938713 - 07/10/12 02:18 AM Re: Lowering the Rear of your G Body [Re: Furgie]  
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Jameson Offline
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I have been reading articles and posts for the last month, My mind feels like mush. I want to lower the rear of my SS with those A-Body springs but the rear end roll has me a little skeptical. The front end I feel I have sorted out and will take some trial and error to dial in. But the dam upper control arm angle in the rear is killing me on paper. I have gone over everything from a Torque arm setup, Mini Bar setup with a panhard bar, Watts link, etc. All I want is a half way decent handling car that I can take to a roadcourse/AutoX and have fun but not kill myself on a 6000$ suspension setup.


1988 Monte Carlo SS Eaton 112 5.3/T56 swap, Way to many mods to list.
2015 GMC Sierra Denali



#938762 - 07/10/12 03:37 PM Re: Lowering the Rear of your G Body [Re: Jameson]  
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Look into relocating the frame mounts up. I can look at my frame tonight and see what it would take, it's still a rolling chassis. I was going to do that, but now I think I am going to go 3 link.

There is no bolt-on solution, so you are someone is going to have to do some fabricating if you want the rear to be 3" or more lower than stock.

#938884 - 07/11/12 03:42 PM Re: Lowering the Rear of your G Body [Re: SickSpeedMonte]  
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Performance Offline
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East Tennessee
I have lowered two different SS cars 3" exactly and I haven't noticed any rear end roll. I also just used the stock upper and lower control arms. I even ran the old '88 SS at the drag strip some. From a 450hp motor in my old '88 to a bone stock motor in my '86, both cars drive and ride great to be lowered as much as they are. No vibrations. Using Belltech 2" drop spindles and Belltech 1" drop springs up front and OPG 3" drop rear springs with Belltech Street Performance shocks on all four corners just seems to work for me. Simple and cost effective.


1986 Monte Carlo SS - 35,000 Miles, Original Paint, Original Interior, Original Drivetrain, Custom ZZ4/L69 Chip, Lunati Street Master Cam, Dual Intrepid Fans, Hedman Elite Headers, Custom Exhaust With 3 Flowmasters, Shift Kit, 3" Drop Suspension, 18" Center Line Wheels, Nitto Tires.
#938890 - 07/11/12 04:45 PM Re: Lowering the Rear of your G Body [Re: Performance]  
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The car pictured in your signature has stock upper and lower arms and no pinion angle vibrations at 70+ mph? Mine would vibrate so bad people though the the car was going to come apart on deceleration until I put the adjustable upper arms in and now it's about perfect, save for the roll steer which will be fixed while the body is off. The roll steer is not something that is a really "in your face" problem, like vibrations are. It's just a "something doesn't quite feel right" feeling, espeically as you turn in. The car just feels lazy like it won't yaw. I'll get some roll steer measurements the next time I roll the frame out from under the body.

Any chance you could put an angle finder on your rear and on your trans?

#938896 - 07/11/12 05:39 PM Re: Lowering the Rear of your G Body [Re: SickSpeedMonte]  
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Montec355 Offline
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I understand your pain with the upper control arms when lowering the rear of the car. It got worse when i put the 9" under the back. The instant center was practically at the rear tires. After some measuring i decided to make some brackets for the upper control arms to relocate them higher. The only drawback if any was the upper control arms were shorter than factory. Here is a partial picture of the brackets.



I still have the issue of a little roll steer, but it is manageable. However in a straight line my 60' times went from an average of 2.0 to an average of 1.65. to me a stick car with that 60' is doing pretty good.

Last edited by Montec355; 07/11/12 05:40 PM.

1984 monte carlo: SBC 406, AFR 210's, 750 mighty demon, T-56 6-speed trans, afx suspension package w/spohn chromoly lower control arms and double adjustable varishock coilovers, and many others. best 1/4 mile time is 11.28 at 127 mph
#938969 - 07/12/12 04:04 PM Re: Lowering the Rear of your G Body [Re: SickSpeedMonte]  
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Performance Offline
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East Tennessee
Originally Posted By: SickSpeedMonte
The car pictured in your signature has stock upper and lower arms and no pinion angle vibrations at 70+ mph?

Any chance you could put an angle finder on your rear and on your trans?


Thats correct. My '86 SS is lowered exactly 3" front and rear. Verified the measurement before and after I lowered the car. It also has the stock upper and lower arms. The car is bone stock other than spindles, springs, and shocks. I have no vibrations what so ever at 70 + mph. Its as smooth as it can be. Trust me if it was bad, I would have already fixed it. But, the only vibrations is a very, very small amount of tire/wheel balance. I also have never felt any roll steer. Been driving this '86 for over a year and a half lowered and couldn't be happier. Thats interstate driving, back roads driving, you name it. I drive it to shows everywhere.

The next time I put it back on the 4 post lift, I will put an angle finder on the rear to see where its at when at ride height. Must be me but, the car is smooth. Anyone thats rides in it has a hard time believing that it is as low as it is. The wife even said I took a good driving car and made it better. I don't know.......... confused


1986 Monte Carlo SS - 35,000 Miles, Original Paint, Original Interior, Original Drivetrain, Custom ZZ4/L69 Chip, Lunati Street Master Cam, Dual Intrepid Fans, Hedman Elite Headers, Custom Exhaust With 3 Flowmasters, Shift Kit, 3" Drop Suspension, 18" Center Line Wheels, Nitto Tires.
#939042 - 07/13/12 11:19 AM Re: Lowering the Rear of your G Body [Re: Performance]  
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Montec355, I like those brackets, or at least the idea behind them. It's hard to see the execution from the pictures. Is that aluminum?? Putting the control arm there is exactly what my car needs if I was staying with the stock UCA configuration.

Performance, I don't know how that happened, but that's great. I wish I could have been that lucky.

#939059 - 07/13/12 04:26 PM Re: Lowering the Rear of your G Body [Re: SickSpeedMonte]  
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Performance Offline
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Originally Posted By: SickSpeedMonte
Performance, I don't know how that happened, but that's great. I wish I could have been that lucky.


I must be real lucky or something cause this is two different SS cars that I have lowered the same exact way. No issues with either cars lowered 3". Just to give you an idea, there is no more room to go any lower in the rear without C-notching the frame.


1986 Monte Carlo SS - 35,000 Miles, Original Paint, Original Interior, Original Drivetrain, Custom ZZ4/L69 Chip, Lunati Street Master Cam, Dual Intrepid Fans, Hedman Elite Headers, Custom Exhaust With 3 Flowmasters, Shift Kit, 3" Drop Suspension, 18" Center Line Wheels, Nitto Tires.
#939565 - 07/18/12 12:36 PM Re: Lowering the Rear of your G Body [Re: Performance]  
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SickSpeedMonte Offline
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Same here, I had to remove the frame side bump stops. I think I was actually pretty close to resting on the pinion snubber at one point with the cut IROC springs (bad idea...)

#939643 - 07/19/12 02:38 AM Re: Lowering the Rear of your G Body [Re: SickSpeedMonte]  
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joyride Offline
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I just ordered my RCS60342's from CPP today as everyone has suggested they lower our rides 3 inches...My question is, how long do they take to get here? We all hate the waiting game, and I'm already being impatient. lol frown


Brian

Had an 88 Monte SS in HS, sold that!
07' MC SS black, all stock (for now)
85' Monte SS project car. Flat Black, 305 w/ LT headers, drop spindles, CPP 2 inch A-body rear springs, 18" Boss 338s
http://www.youtube.com/watch?v=HeKFlFEG_Bk&feature=share&list=UUiPzUj6CEffDt2J4Rv0Iwfw
#962752 - 02/21/13 03:54 AM Re: Lowering the Rear of your G Body [Re: SickSpeedMonte]  
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OK, so.I plan to run a 305/45/18 outback (28.5inch ) tire and its going to raise the rear of my car up a bit from where it stands now. Front i have 2 inch drop spindles and 5660 springs. Front lip is 8 inches from the ground with stock wheels and tires.

My question is I want a raked stance so.what would be the best springs to go with lower the rear so it still has a rake. Theoretically, I guess I could go.for a level stance and with the bigger tires it will give a raked stance. Like posted before a lot of reading and all.... plus I do not want to break the bank lol


85 Monte Carlo SS ---> 6.2l l92 / 4l80e swap - 400+whp club

Best track times to date: 11.137 @ 123.15 mph

93 Chevy S10--->lt1/t56 daily driven = 313rwhp/337tq GONE BUT NEVER FORGOTTEN!!
#994624 - 02/11/14 01:56 AM Re: Lowering the Rear of your G Body [Re: SickSpeedMonte]  
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Rich86SS Offline
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At what amount of drop would someone need to use the Belltech 2209IH shocks versus using a stock type shock? Looking at dropping the rear 1.5" and exploring my shock options.

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