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Roadster springs on a 411...

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I've seen this mentioned as an option. With stock roadster springs, how much do they lower a 411 (if any)? Is the stock spring rate different? Are shocks also interchangeable?

 

-Scott

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its the competition springs you want to get, nets about 2 inches lower adn i think is a bit stiffer.

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For the standard height suspension I have the model and part numbers for Sears lifetime warranty gas loaded shocks, front and back. They provide good correction from stiff sidewall 82% cross section bias ply tires that were 411 standards and modern softer sidewall 80% cross section radial tires.   I don't know if a 2 inch drop would compromise the shock absorber action.  Erich would most likely have that info.  I use 80% cross section radial tires to keep speedometer calibration almost spot on.

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a 2 inch drop would be ok on the shocks. with arm length and shock ratio etc the shock only moves about half of what the wheel does, maybe less. i know stock length shocks will allow you to compress the arm to the crossmemeber up against the bumpstop mount, with no bumpstop installed and dont bottom out.... yes i drove my 411 like this for a few days lol. so there is no need to change out shocks for length, just for ride quality 

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2 inches might further than I want to go with this car. Would non-competition roadster springs result in maybe a 1 inch drop?

 

-Scott

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2 inches might further than I want to go with this car. Would non-competition roadster springs result in maybe a 1 inch drop?

 

-Scott

 

 

Maybe 46 year old coil springs already have a one inch drop?

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Maybe 46 year old coil springs already have a one inch drop?

 

Good point. What about lowering the rear to match? Are people using blocks to space the leaf springs?

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Okay... here it is with stock Roadster springs and 1" lowering blocks from Summit:

 

411lowered.jpg

 

I love it at this height. Looks "right" without looking slammed for my taste.

 

-Scott

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Looks great! I'm thinking about getting the competition springs for my 410 wagon. Wondering if anybody would chime in with the optimal shock to use with a 2 inch drop? Going to hit up Just Joel for custom lowering blocks. Thinking ill use air shocks for the back...

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Sorry for being a sissy, I looked on KYB shocks specifications page and I will subtract the amount I lower the vehicle from the stock shock height, must think before posting...

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Sorry for being a sissy, I looked on KYB shocks specifications page and I will subtract the amount I lower the vehicle from the stock shock height, must think before posting...

 

It's not 1:1. If the compressed height of the spring (and thus the shock) drops by 1", the ride height of the car drops by more than 1". Keep that in mind when choosing a shock.

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Looks great! I'm thinking about getting the competition springs for my 410 wagon. Wondering if anybody would chime in with the optimal shock to use with a 2 inch drop? Going to hit up Just Joel for custom lowering blocks. Thinking ill use air shocks for the back...

 

or you could just go to autozone and but the 2 inch lowering block kit for the $35.....

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I tried using Roadster springs in my 411, but decided they were way too soft. Instead I found a second set of stock 411 coils and cut about 1.5 coils off of them. This gave me the same drop as the roadster springs but a better spring rate.

 

As for shocks, I used KYB Gas-a-Just #KG4513, which are listed for Chevelle, El CAmino, Monte Carlo. These worked pretty well, but I wanted more shock so I switched to Doesch Tech Nitro Slammer shocks and am really happy with the setup.

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I tried using Roadster springs in my 411, but decided they were way too soft. Instead I found a second set of stock 411 coils and cut about 1.5 coils off of them. This gave me the same drop as the roadster springs but a better spring rate.

 

As for shocks, I used KYB Gas-a-Just #KG4513, which are listed for Chevelle, El CAmino, Monte Carlo. These worked pretty well, but I wanted more shock so I switched to Doesch Tech Nitro Slammer shocks and am really happy with the setup.

Thanks for the information... I was researching the shocks today.

 

Regards,

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