5660 Springs 9/25/2021

[403Olds]

Im so confused. Stock springs. 2" dropped spindles. The previous owner switched to the 205 60s because the larger tires rubber through the inners on both sides. How the heck can a larger tire work on your car and rub on mine ? It cant be just the ball joints. The 5660 springs are 2+ inches shorter that whats in the car now.

The shorter springs are stiffer and won't drop as much relative to the stock springs. I had the same issue 25 years ago with dropped spindles, put them on with stock springs, and the same 235/60's, drive it 5 miles, (2 1/2" out and 2 1/2" back) and swapped back to stock spindles. That's my only experience with dropped spindles. I now see why you are running 205's. You might check the backspacing also, if they are 3.5" that will rub more.

 

[64nailhead]

Need some ballast in the front end to offset the new springs.

 

[mikester]

The shorter springs are stiffer and won't drop as much relative to the stock springs. I had the same issue 25 years ago with dropped spindles, put them on with stock springs, and the same 235/60's, drop it 5 miles, (2 1/2" out and 2 1/2" back) and swapped back to stock spindles. That's my only experience with dropped spindles. I now see why you are running 205's. You might check the backspacing also, if they are 3.5" that will rub more.

So if I understand this the 5660 although shorter wont compress as much as the longer stock spring ? Do you think the car will sit lower or higher than it is currently ? The privious owner told me theres stock Monte SS coils in the rear.

Im trying to achieve this type of look but my cars a little lower in the back. Ive seen the one with the Monte nose in person when it was for sale the first time. The car had factory control arms. Is it just a matter of finding the right tire size and rim BS ? Im not sure what size tires the privious owner took off. He couldnt remember. The rally wheels on the front are only 6" wide. Not sure of the BS.

 

[DSPbuilt]

Need some Turbos in the front end to offset the new springs.

Fixed that for you.

 

[carnutjw]

Look at this chart, read this chart-

Moog Springs for High Performance Monte Carlo and G bodies

I am going to assume you have Moog 5598 springs from the factory with a front end weight of 2124 lbs. at 11.0 " installed height(which have sagged in the last forty years). If you install Moog 5660 springs rated at 2154 lbs. at 10.75" installed height, you should be within 1/4" (639lbs./inch=.00156"/lb.x30 lbs.= .047" +10.75"= 10.797") of ORIGINAL height for your car with stock spindles.
Or you can go this route, they use 2" drop spindles with their G body kit-

Front Dual-Rate Coil Springs, Stock Height | 1978-88 GM G-Body | Pair

StreetGRIP front lowering coil springs improve the handling, ride quality and stance of your 1978-1988 GM B-Body muscle car including Monte Carlo, Malibu, Regal, Grand National, 442, Hurst/Olds, Lemans, Grand Prix, El Camino and T-Type.

www.ridetech.com

And add +1/2" taller upper ball joints=

CHEVROLET S10 Proforged Chassis Parts 101-10020 Proforged Tall Ball Joints | Summit Racing

Free Shipping - Proforged Tall Ball Joints with qualifying orders of $109. Shop Ball Joints at Summit Racing.

www.summitracing.com

 

[64nailhead]

Fixed that for you.

I was hoping someone would equate 'ballast' as turbos lol.

Kidding aside, setting front ride height on a twin or T6 build has little none of this stuff apply. Even comparing to a BB is not extremely beneficial because the location of the additional weight is so far forward (at least in my builds).

 

[Kamloops cutlass]

Look at this chart, read this chart-

Moog Springs for High Performance Monte Carlo and G bodies

I am going to assume you have Moog 5598 springs from the factory with a front end weight of 2124 lbs. at 11.0 " installed height(which have sagged in the last forty years). If you install Moog 5660 springs rated at 2154 lbs. at 10.75" installed height, you should be within 1/4" (639lbs./inch=.00156"/lb.x30 lbs.= .047" +10.75"= 10.797") of ORIGINAL height for your car with stock spindles.
Or you can go this route, they use 2" drop spindles with their G body kit-

Front Dual-Rate Coil Springs, Stock Height | 1978-88 GM G-Body | Pair

StreetGRIP front lowering coil springs improve the handling, ride quality and stance of your 1978-1988 GM B-Body muscle car including Monte Carlo, Malibu, Regal, Grand National, 442, Hurst/Olds, Lemans, Grand Prix, El Camino and T-Type.

www.ridetech.com

And add +1/2" taller upper ball joints=

CHEVROLET S10 Proforged Chassis Parts 101-10020 Proforged Tall Ball Joints | Summit Racing

Free Shipping - Proforged Tall Ball Joints with qualifying orders of $109. Shop Ball Joints at Summit Racing.

www.summitracing.com

Just trying to understand clearly , these ridetech springs are matched with 2” drop spindles and 1/2” taller bjs ?
how much drop does this provide ?
How is the rear dropped to match ?
I will try to research this this weekend , but a quick affirmation from you might help 😁
I have yet to lower my car , there are just so many options and I don’t really understand them all .
I’m ready to spend my $50/month budget
Lol

 

[mikester]

Look at this chart, read this chart-

Moog Springs for High Performance Monte Carlo and G bodies

I am going to assume you have Moog 5598 springs from the factory with a front end weight of 2124 lbs. at 11.0 " installed height(which have sagged in the last forty years). If you install Moog 5660 springs rated at 2154 lbs. at 10.75" installed height, you should be within 1/4" (639lbs./inch=.00156"/lb.x30 lbs.= .047" +10.75"= 10.797") of ORIGINAL height for your car with stock spindles.
Or you can go this route, they use 2" drop spindles with their G body kit-

Front Dual-Rate Coil Springs, Stock Height | 1978-88 GM G-Body | Pair

StreetGRIP front lowering coil springs improve the handling, ride quality and stance of your 1978-1988 GM B-Body muscle car including Monte Carlo, Malibu, Regal, Grand National, 442, Hurst/Olds, Lemans, Grand Prix, El Camino and T-Type.

www.ridetech.com

And add +1/2" taller upper ball joints=

CHEVROLET S10 Proforged Chassis Parts 101-10020 Proforged Tall Ball Joints | Summit Racing

Free Shipping - Proforged Tall Ball Joints with qualifying orders of $109. Shop Ball Joints at Summit Racing.

www.summitracing.com

But if I put the 5660s in the big question is.. what will I be able to fit as far as tires and wheels with them.

 

[carnutjw]

Here's the whole system:

1978-1988 G-Body StreetGRIP Suspension System

Upgrade your 1978-1988 G-Body with our StreetGRIP suspension system for improved handling, ride quality and lowered stance. It's the perfect upgrade for your Monte Carlo, Malibu, Cutlass, Regal, Grand National, T-Type, Grand Prix, Cutlass, 442 or Hurst Ol

www.ridetech.com

I was just offering up the springs due to them using the drop spindles, like you already have. As far as drop, I'm not sure. They have a photo with a Monte Carlo SS measurements to the fender lip, but that doesn't help much unless you have a MCSS. A better measurement and more universal would be to the frame rail behind the front tire, and in front of the rear tire. Mine currently=Frame rail height behind front wheel= 6 1/4", forward of rear wheel =7". The taller ball joints help with the camber curve and make the top of the wheel tip in under compression, instead of out towards the wheel well liner.

 

[carnutjw]

But if I put the 5660s in the big question is.. what will I be able to fit as far as tires and wheels with them.

235/60-15.