Senior Tech Team
Join Date: Sep 2000
Location: Walnut Creek, CA
Re: Coil spring choices?
Jeff, the springs are sitting correctly in their seats. I know because one was off when I first set it down and I had to address it then.
Bill, the stock front springs for my car we’re 18.6“ free height and 12.59” working height @ 1510 lbs. The deflection rate is 1” per 250 lbs of weight so the free vs working heights seem correct.
The Hotchkis springs have a free height of 14.250”. They don’t list a “working height” but the deflection rate is 1” per 500 lbs so my guess is that the working height should be approx. 3” lower. Call it 11.250”. Which is an inch lower than the stock spring working height which may work out to 2” lower at the wheel. Sounds semi legit but I’m not sure how to do that calc.
Although with these springs AND 2” dropped spindles my car is at stock height.
I think the ride quality and height issue are related. Is 500 lbs/in to stiff for an everyday driver? Am I thinking correctly with my math?
And I know sway bars don’t affect the ride height but could they affect the ride quality? If one tire hits a bump and the other doesn’t, does the sway bar contribute to ride harshness?
66 Chevelle hardtop - LFX 3.6 liter 4 Cam V6/6L50 6 speed auto trans, 3.07 10 bolt, full Hotchkis suspension, Wilwood 4 wheel discs, white with red interior, cowl hood.