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7 or 9 Leaf, Leaf Spring???

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Old Dec 12, 2004 | 06:31 PM
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Default 7 or 9 Leaf, Leaf Spring???

I ordered a Leaf spring and coil spring suspension kit from Mid Amarica Motorworks and realized that I received a 7 leaf leaf spring, what I am replacing is a 9 leaf leaf spring.

Can someone explain the difference between the two? Should I try and exchange the 7 for a 9 leaf?

TIA
Bill
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Old Dec 12, 2004 | 06:54 PM
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I'm tempted to say the difference is "two leaves", but I won't. I was told the 7-leaf will give you a softer ride and probably a lower ride height in the rear. If you exchange it for the 9-leaf, you may need to get the longer bolts to get your rear height where it was before. Don't know if the 7-leaf will fit properly if the 9-leaf was there initially . You may need an adapter kit of some kind. Some of the more advanced members of the forum will know.
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Old Dec 12, 2004 | 07:03 PM
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Measure your spring width - it's either 2.5" or 2.25" .... make sure what you ordered is going to fit. My 9-leaf spring is 2.5" - in MidAmericas catalog the 7 leaf spring is 2.25"
The 7-leaf spring was considered 'heavy duty' as far as I remember, not sure though...
Somebody may have changed the differential cover and the spring mount ??? Check what you have...

Good luck.
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Old Dec 12, 2004 | 07:22 PM
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Old Dec 12, 2004 | 07:36 PM
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The 7 leaf spring is a heavy duty option spring. The leafs on my heavy duty spring are thicker ( i.e. heavy duty) Don't count on it sitting lower than your 9 leaf standard original. After market's typically sit higher and ride stiffer.

Bullshark

Last edited by Bullshark; Dec 12, 2004 at 07:38 PM.
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Old Dec 12, 2004 | 07:41 PM
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7 leaf is a good spring. It's what I put on my car after my 9 leaf broke. Ride is a little firmer, but it corners better.
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Old Dec 12, 2004 | 07:44 PM
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I originally had a 7 leaf and for comfort put on a 9 leaf with new Bilstein shocks. I also replaced the original 550 lb front springs with new 550 springs and Bilstein shocks. I love the ride, nice and flat in the corners and no floating on hard acceleration on the highway.
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Old Dec 12, 2004 | 08:06 PM
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7 leaf is the Gymkhana replacement.

You want to match the spring rates for front/rear along with proper stabilizer bars size (and use some good high pressure gas shocks) so your handling is balanced.

If you mix and match, you could end up with a squirrely set-up.

Brent...
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Old Dec 12, 2004 | 11:01 PM
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Stabilizer bar? What's that? (mine doesn't have one in the rear)
Stock SB (1/2 coil cut) springs in front with stock front sway bar. No problems & ride is not bad.
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Old Dec 12, 2004 | 11:13 PM
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neither.. Go with a composite spring...
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