Monroe shocks on lowered vehicle - Chevy Impala SS Forum
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post #1 of 33 (permalink) Old 08-06-2019, 10:34 AM Thread Starter
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Monroe shocks on lowered vehicle

Hi all,

I did a search but couldn't find anything conclusive. Especially since most people seem to no run Monroe's.

My shocks are shot. Car is pretty bouncy and I can even see them leaking a bit. So I want to install new ones.

I want to run Monroe shocks because of the lifetime warranty but my car is lowered and I want to make sure I get the right shocks.

How can I measure the drop? Any way to tell if the springs are worn out?

Front is on belltech drop spindles (I believe its a 2" drop) and the rear is on lowering springs but I dont know the brand or how far the drop is, for now lets just assume it's 2" or 3" but some of the drop may be due to wear.

The rear springs fall out when lifting the car. What is the best way to prevent this?

I think my rubber pads the go between the spring and the mounts are also missing. Where can I find replacements?

I think I can run standard length shocks for the Front since its on lowered spindles but I assume I will need different shocks in the back?

I would like air shocks if possible since I plan to install a rather heavy subwoofer, extra battery and a few amps that I will carry around all the time, plus whatever additional loads I may carry. I may eventually install an on-board compressor and tank to adjust them on the fly inside the car.

I am open to the air lift setup but still need shocks that will work with this setup as well.

Part numbers for the correct front and rear Monroe shocks, rear Monroe air shocks, rubber spring pads, air lift kit, and anything else I may need are greatly appreciated!

Thank you in advance!

Richland, WA. Moving to Cocoa Beach, FL by November 2019

1994 9C1, 18x,xxx miles

shorty headers, cat delete, CAI, TB air foil, MSD cap and rotor, air pump delete, bosh double platinum plugs

2" front belltech drop spindles, 3" rear drop coils, rear airlift 1000

Cadillac Deville heated leather seats

looking for blue door panels with power window switches, upper and lower dash without holes, power window components and harness, and cruise control components and harness.
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post #2 of 33 (permalink) Old 08-06-2019, 12:53 PM
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[quote]I did a search but couldn't find anything conclusive.
.....
I want to run Monroe shocks because of the lifetime warranty but my car is lowered and I want to make sure I get the right shocks.
Explain for everyone if the car is doing ok now and not bending or breaking stuff, why not simply take the model you are currently running and crossover to the same specs of another preferred brand. There are detail travel and size spec tables for the different models of all the major names - usually on the manufacturers website.

[QUOTE]How can I measure the drop? Any way to tell if the springs are worn out?
Pretty straightforward I should think. Get it on ramps if easier to see, but just eyeball the remaining shaft play at rest v. extra distance to the bumpstop to be safe from bottoming out. The brand, age and spec of the coils you have might give indication of how "worn out" they are. If they are not broken and give the ride feel and look you like (discounting the shock issue), then there is little reason to change for no reason. Unless already clear, shocks have zero affect on ride ht., except if gas-charged, and if so then only a 1/2" for a couple months til they settle.

[QUOTE]The rear springs fall out when lifting the car. What is the best way to prevent this?
LOL You hafta go a whole 3 dozen threads down to get to this:
https://www.impalassforum.com/vBulle...-fall-out.html

[QUOTE]I think my rubber pads the go between the spring and the mounts are also missing. Where can I find replacements?
Go to most any carpart site and type, "coil spring isolator" or similar.

[QUOTE]I think I can run standard length shocks for the Front since its on lowered spindles but I assume I will need different shocks in the back?
Why are you assuming that? What are you not telling us about the back? You sure don't want a shock travel purposely shorter just to act as a coil "faller out preventer". Use the seatbelt or other welded or bolted fixes in that linked thread.

[QUOTE]I would like air shocks if possible since I plan to install a rather heavy subwoofer, extra battery and a few amps that I will carry around all the time, plus whatever additional loads I may carry. I may eventually install an on-board compressor and tank to adjust them on the fly inside the car.
You really totally don't want "airshocks". Use real shocks in combo with Airlift bladders. You can hook them to any compressor you wish.

I am open to the air lift setup but still need shocks that will work with this setup as well.

[QUOTE]Part numbers for the correct front and rear Monroe shocks, rear Monroe air shocks, rubber spring pads, air lift kit, and anything else I may need are greatly appreciated!
The probability is between none to zero that anyone else is running your exact setup. It'd be poor investment just gobbling up whatever part nos. get lobbed over the web to you without doing every bit as much back-checking to confirm everything as if you just started now on real research yourself. IMO you risk damage and/or unsafe performance "buying blind" on even well-meaning intentions of others.


It may sound like being contrary for no purpose, but your post jumped off the paper as one of those areas - brakes, suspension, tires, blah blah - where there ain't no one alive I trust more than myself for me's and my family's safety. :: rants off ::

\'96SS SOB: SSRI, Herter Tune, Tri-Y II, , 3000 Edge, F/HO bars, METCO extendeds with CV MMC, Bilsteins, currently Vredestein Ultrac Sessanta (315/35 rear). Finally, wait for it... LT-4 knock module!
\'96FWB BUW-Butt Ugly White: PCMPerformance tune, HDFA w/ swissed filter, 1/2 SLP s.s. catback with H- and Flow Super 50s, oem opti rebuilt 3 times, SS Bars, METCO LCA, Airlift 1000, Monroe SS, PowerTrax No-Slip, CTS wheels with +1 rubber. Finally, yes again... LT-4 knock module!

Last edited by 96 Black; 08-06-2019 at 01:00 PM.
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post #3 of 33 (permalink) Old 08-06-2019, 04:40 PM
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The Only Thing Left -

[Quote]Part numbers for the correct front and rear Monroe shocks, rear Monroe air shocks, rubber spring pads, air lift kit, and anything else I may need are greatly appreciated!


As it sounds like the brand is unknown, the Airlift part number will be determined by coil dia. x ht. which only you can measure. I used the fitment selector found either on the speed shop's mailorder site or on the AirLift site to confirm the same part no. used by many others for an oem SS coils. But, those will most assuredly not be right for yours.

\'96SS SOB: SSRI, Herter Tune, Tri-Y II, , 3000 Edge, F/HO bars, METCO extendeds with CV MMC, Bilsteins, currently Vredestein Ultrac Sessanta (315/35 rear). Finally, wait for it... LT-4 knock module!
\'96FWB BUW-Butt Ugly White: PCMPerformance tune, HDFA w/ swissed filter, 1/2 SLP s.s. catback with H- and Flow Super 50s, oem opti rebuilt 3 times, SS Bars, METCO LCA, Airlift 1000, Monroe SS, PowerTrax No-Slip, CTS wheels with +1 rubber. Finally, yes again... LT-4 knock module!
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post #4 of 33 (permalink) Old 08-06-2019, 07:10 PM
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I run the Monroe Severe Service Shocks on the Front with Eibach Pro Drop Springs and GM 5/8" Spindles without issue. Maybe contact Beltech to see what they may recommend?

Edit - The spring isolators, Energy Suspension makes them in a Poly. Pretty sure they are the same on early cars like the Monte Carlos and bet you places like Pep Boys or other local shops may have or get the ES Pieces. I run them on both the Top and Bottom of the Rear Springs. On the Fronts, pretty sure ES makes those as well. If you want GM in Poly....check my "5/8" Ball Joint" thread for the Part # (think it was for a truck) in for the front springs.

https://www.impalassforum.com/vBulle...ps-part-s.html

================================================== =============


'95 Caprice SS conversion - Bonny Buckets - 96 Column, Shifter and Console - 3.73 Gear and Herter tune - Z/28 Cluster - Blazer OH Console - Green/Pink bushings - Chromed Impala Wheels - Eibach Springs and Bilstein Shocks - Corvette Engine Dress - the list goes on and still more to do...it never ends.

Last edited by 4DoorSS; 08-06-2019 at 08:07 PM.
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post #5 of 33 (permalink) Old 08-07-2019, 08:29 PM Thread Starter
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Explain for everyone if the car is doing ok now and not bending or breaking stuff, why not simply take the model you are currently running and crossover to the same specs of another preferred brand. There are detail travel and size spec tables for the different models of all the major names - usually on the manufacturers website.

The car is not bad but I bought it used already lowered. It seems the current shocks are ok. I will take your advice and see if Monroe has any of the same or similar specs


How can I measure the drop? Any way to tell if the springs are worn out?
Pretty straightforward I should think. Get it on ramps if easier to see, but just eyeball the remaining shaft play at rest v. extra distance to the bumpstop to be safe from bottoming out. The brand, age and spec of the coils you have might give indication of how "worn out" they are. If they are not broken and give the ride feel and look you like (discounting the shock issue), then there is little reason to change for no reason. Unless already clear, shocks have zero affect on ride ht., except if gas-charged, and if so then only a 1/2" for a couple months til they settle.

Sounds easy enough

The rear springs fall out when lifting the car. What is the best way to prevent this?
LOL You hafta go a whole 3 dozen threads down to get to this:
https://www.impalassforum.com/vBulle...-fall-out.html

I did end up finding that thread later. Not sure I like the straps but I do like the idea of construcion adhesive

I think my rubber pads the go between the spring and the mounts are also missing. Where can I find replacements?
Go to most any carpart site and type, "coil spring isolator" or similar.
Thank you! I was not sure what they were called and was having trouble finding them

I think I can run standard length shocks for the Front since its on lowered spindles but I assume I will need different shocks in the back?
Why are you assuming that? What are you not telling us about the back? You sure don't want a shock travel purposely shorter just to act as a coil "faller out preventer". Use the seatbelt or other welded or bolted fixes in that linked thread.

I meant to mention then back is at least a 2" drop and since it doesn't use lowering spindles I assume the shocks need to be shorter to compensate properly. But since the current shocks presumably worked well at some point I will just try to find the same kind in monroes

I would like air shocks if possible since I plan to install a rather heavy subwoofer, extra battery and a few amps that I will carry around all the time, plus whatever additional loads I may carry. I may eventually install an on-board compressor and tank to adjust them on the fly inside the car.
You really totally don't want "airshocks". Use real shocks in combo with Airlift bladders. You can hook them to any compressor you wish.
My 79 Z28 has air shocks and they seem to work well but the airlift kit doesnt seem too expensive anyways

I am open to the air lift setup but still need shocks that will work with this setup as well.

Part numbers for the correct front and rear Monroe shocks, rear Monroe air shocks, rubber spring pads, air lift kit, and anything else I may need are greatly appreciated!
The probability is between none to zero that anyone else is running your exact setup. It'd be poor investment just gobbling up whatever part nos. get lobbed over the web to you without doing every bit as much back-checking to confirm everything as if you just started now on real research yourself. IMO you risk damage and/or unsafe performance "buying blind" on even well-meaning intentions of others.


Good point. I will just do what I said earlier and get my current shocks in Monroe's or whatever is closest. Hopefully I can find the info on the current shocks.

It may sound like being contrary for no purpose, but your post jumped off the paper as one of those areas - brakes, suspension, tires, blah blah - where there ain't no one alive I trust more than myself for me's and my family's safety. :: rants off ::

Not a problem! You were very helpful! Tbh I'm just learning suspension stuff so any help is appreciated

Richland, WA. Moving to Cocoa Beach, FL by November 2019

1994 9C1, 18x,xxx miles

shorty headers, cat delete, CAI, TB air foil, MSD cap and rotor, air pump delete, bosh double platinum plugs

2" front belltech drop spindles, 3" rear drop coils, rear airlift 1000

Cadillac Deville heated leather seats

looking for blue door panels with power window switches, upper and lower dash without holes, power window components and harness, and cruise control components and harness.

Last edited by Mendonmafia; 08-07-2019 at 08:31 PM.
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post #6 of 33 (permalink) Old 08-07-2019, 08:36 PM Thread Starter
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Quote:
Originally Posted by 96 Black View Post
As it sounds like the brand is unknown, the Airlift part number will be determined by coil dia. x ht. which only you can measure. I used the fitment selector found either on the speed shop's mailorder site or on the AirLift site to confirm the same part no. used by many others for an oem SS coils. But, those will most assuredly not be right for yours.
Thank you! I will meausure when I get a chance. Having sudden engine issues now so gotta take care of those first.

Quote:
Originally Posted by 4DoorSS View Post
I run the Monroe Severe Service Shocks on the Front with Eibach Pro Drop Springs and GM 5/8" Spindles without issue. Maybe contact Beltech to see what they may recommend?

Edit - The spring isolators, Energy Suspension makes them in a Poly. Pretty sure they are the same on early cars like the Monte Carlos and bet you places like Pep Boys or other local shops may have or get the ES Pieces. I run them on both the Top and Bottom of the Rear Springs. On the Fronts, pretty sure ES makes those as well. If you want GM in Poly....check my "5/8" Ball Joint" thread for the Part # (think it was for a truck) in for the front springs.

https://www.impalassforum.com/vBulle...ps-part-s.html
Certainly belltech will recommend the drop 2 shocks or their other models lol but thanks for the advice and the info on the spring isolators amd the thread! I will certainly check this out

Richland, WA. Moving to Cocoa Beach, FL by November 2019

1994 9C1, 18x,xxx miles

shorty headers, cat delete, CAI, TB air foil, MSD cap and rotor, air pump delete, bosh double platinum plugs

2" front belltech drop spindles, 3" rear drop coils, rear airlift 1000

Cadillac Deville heated leather seats

looking for blue door panels with power window switches, upper and lower dash without holes, power window components and harness, and cruise control components and harness.
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post #7 of 33 (permalink) Old 08-29-2019, 03:24 PM Thread Starter
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I couldn't find monroe fronts with police spec so I went with the KYB 344081 up front. Supposedly these are the police package spec and 30% more damping than the KYB 343127 according to kyb.

In the back I went with monroe 5802's. These are about half an inch shorter that the stock length 5955's. The rear shocks i removed were stock length but i suppose the half inch shorter length will be better than nothing for my lowered vehicle.

The ride is si much better but still some side to side shimmying in the back, especially when going over bumps at an angle. Not sure if that's normal but the bounce is basically gone.

Now time for airlift and new spring isolaters in the rear 🙂 Just gotta measure my springs in the compressed state. Thanks to everyone for the help!

-Mark

Richland, WA. Moving to Cocoa Beach, FL by November 2019

1994 9C1, 18x,xxx miles

shorty headers, cat delete, CAI, TB air foil, MSD cap and rotor, air pump delete, bosh double platinum plugs

2" front belltech drop spindles, 3" rear drop coils, rear airlift 1000

Cadillac Deville heated leather seats

looking for blue door panels with power window switches, upper and lower dash without holes, power window components and harness, and cruise control components and harness.
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post #8 of 33 (permalink) Old 09-15-2019, 09:26 PM Thread Starter
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Just an update. The monroes are not very good in my car. Not sure if its the OE spectrum line or because they are not short enough, but the rear end is still quite bouncy. Gonna try some KYBs (343157, 2" shorter than stock) out back and see if they have better rebound characteristics.

Richland, WA. Moving to Cocoa Beach, FL by November 2019

1994 9C1, 18x,xxx miles

shorty headers, cat delete, CAI, TB air foil, MSD cap and rotor, air pump delete, bosh double platinum plugs

2" front belltech drop spindles, 3" rear drop coils, rear airlift 1000

Cadillac Deville heated leather seats

looking for blue door panels with power window switches, upper and lower dash without holes, power window components and harness, and cruise control components and harness.
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post #9 of 33 (permalink) Old 09-16-2019, 07:41 AM
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Quote:
Originally Posted by Mendonmafia View Post
.....The monroes are not very good in my car. Not sure if its the OE spectrum line ......

I would have defaulted to anything in an "OE" range as lagging with use with aftermarket performance coils as your BellTechs, - or even stock Impala SS coils. Most all guys going Monroe use the Severe Service line. Reportedly near-approaching the performance of the more expensive Bilsteins. They are notable difference (more solid) on my FWB v. the 5-year old Monroes (didn't know model) that the previous owner had installed. And this is with the softest FE1 coils.

\'96SS SOB: SSRI, Herter Tune, Tri-Y II, , 3000 Edge, F/HO bars, METCO extendeds with CV MMC, Bilsteins, currently Vredestein Ultrac Sessanta (315/35 rear). Finally, wait for it... LT-4 knock module!
\'96FWB BUW-Butt Ugly White: PCMPerformance tune, HDFA w/ swissed filter, 1/2 SLP s.s. catback with H- and Flow Super 50s, oem opti rebuilt 3 times, SS Bars, METCO LCA, Airlift 1000, Monroe SS, PowerTrax No-Slip, CTS wheels with +1 rubber. Finally, yes again... LT-4 knock module!
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post #10 of 33 (permalink) Old 09-16-2019, 09:26 AM
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Monroe Severe Service Shock Dampers PERFORM very admirably as compared to the sporty 1104/0929 Bilsteins, but the MSS are a bit rougher.


If you're one of the 1%ers who prefers the 1516/1517 Bilsteins, the MSS will not suffice.

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