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Old 06-11-2019, 05:16 PM
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67ramair4 67ramair4 is offline
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Join Date: Jan 2003
Location: Collierville, TN.
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Question New spring (F & R) time!

Need a little input on springs!

Is there a particular type or reason to install a set of progressive springs over a set of linear ones?

Was looking at using a set of 1" drop front and rear for a 67 GTO coupe w/o A/C or p/steering. Springs are listed as having a progressive spring rate.

No road racing, drifting or usage that it certainly wasn't manufactured for! Just street and the occasional 1/4 mile burst will be it's forte'.

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Old 06-11-2019, 05:26 PM
JLMounce JLMounce is offline
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Progressive rate springs start off light and build rate as compression occurs. For performance applications this is typically not desired as it makes the car's handling somewhat unpredictable. Since this isn't a performance application, but instead just looking for a bit of a drop, you should be fine with progressive rate springs. The only time I'd worry about that is if you already have issues with bottoming out the car at factory ride height.

When dropping the ride height, you typically want added rate to avoid bottoming the suspension. As a result, dropping the car and not adding initially increased rate from a linear spring can increase the chance of this happening. At a 1" drop however, I wouldn't really expect that.

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