Are stock springs progressive or linear?
Originally posted by CrazyHawaiian
yup both front and rear are linear. IMHO progressive rate springs are a gimmik.
yup both front and rear are linear. IMHO progressive rate springs are a gimmik.
Joined: Oct 2002
Posts: 1,866
Likes: 5
From: Salem, NH
Car: 1999 Z28
Engine: LS1
Transmission: 4L60E
Axle/Gears: 3.23 10 Bolt
i dunno, i have the eibach sportlines in my car, their progressive, they are a very nice performing spring. the ride will fool you, it rides VERY nice, it seems as if the springs are much more tame then stock but, then u hit a corner and the handling power is phenomenal. i love em glad i bought them. put in a set and never look back!
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I used to run Sportlines in my 91Z. I've also used the Pro-kit on my former 92 B4C. The sloppy spring rate while driving straight on the freeway would cause my front to bottom out if I hit a bump that was too big. It wasnt as bad with the Pro-Kit because the ride height was a little higher allowing me more suspension travel. But I still had issues (with the stock 16's even). Now I run linear rate springs and I feel a huge difference. The ride is stiffer, but the car is a lot more agile. The sloppy feeling of the progressive rate is gone. No more body roll and the car never bottoms out, even over the biggest bump. Comparing my linear setup to the old progressive setup I have to say the progressive setup gets the thumbs down. For someone who wants all out handling capabilities I dont think they are a good choice. I call it a gimmik because the sales pitch leads you to believe they are the best, but in reality they are sloppy when compared to a stiffer linear rate spring.
But I tell you what, if you could actually choose what spring rates to use in the progressive rate spring then I would not be bashing them at all. I think the rates they chose are too soft for our car.
But I tell you what, if you could actually choose what spring rates to use in the progressive rate spring then I would not be bashing them at all. I think the rates they chose are too soft for our car.
I have to agree with the last post. The Pro-Kit is a bit soft and sloppy. It's OK around the street, but there's a bit too much movement at times. It is a step up over the stock springs, IMHO, but a higher rate linear spring would be better.
Originally posted by CrazyHawaiian
I call it a gimmik because the sales pitch leads you to believe they are the best, but in reality they are sloppy when compared to a stiffer linear rate spring.
I call it a gimmik because the sales pitch leads you to believe they are the best, but in reality they are sloppy when compared to a stiffer linear rate spring.
Supreme Member
Joined: Mar 2001
Posts: 6,577
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From: Portland, OR www.cascadecrew.org
Car: 1990 Camaro RS
Engine: Juiced 5.0 TBI - 300rwhp
Transmission: T5
Axle/Gears: 3.42 Eaton Posi, 10 Bolt
def. CH summed up most of our views.
another note . . . progressive coils are a little less 'predictable' which is the ultimate goal of really going fast, you need the car to react exactly the same, on every corner. otherwise you won't be able to learn how to push your car to the limit.
another note . . . progressive coils are a little less 'predictable' which is the ultimate goal of really going fast, you need the car to react exactly the same, on every corner. otherwise you won't be able to learn how to push your car to the limit.
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Joined: Feb 2003
Posts: 1,455
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From: Mostly in water off So. Cal
Car: '87 Chev
Engine: 60*V6
Transmission: DY T700
All I'll say is- I run progressive rear springs, but linear fronts. Gives the *** end a better feel for me and gives better squat in the corner until it locks down to the stiffer rate to prevent bottoming out. They are fine as long as you control them with high rebound damper.
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