Autospring 2.5" Lift
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Junior Member
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Autospring 2.5" Lift
Curious if someone could shed a little light on something for me. It seems that many of you really like the Auto Spring leveling kit. I have been looking at them, and am a bit confused. The 2.5" kit is described as a "1 1/4" Thick Spacer". That's where the confusion part comes in. How do you get 2.5" of lift out of a 1.25" spacer. Surely they're not measuring the lift out at the front bumper tip! All of the lifts I have installed are measured as lift at centerline of axle.
G4W
G4W
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Joined: Mar 2006
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From: Trempealeau, WI
I am not exactly sure on this, but I think this is the reason. Take a look at a flag pole. If you push against it at a spot say 6' up the pole and move the pole 1/4" at this point, the top of the pole will move maybe 1-2". But if you were to push on the top of the pole 1/4" the spot that is 6' off the ground will only move 1/16" or less.
Basically it has to do with were the lower control arm (LCA) and coil over mounting points are. If the mounting point for the coilover was closer to the mounting point of the LCA, you would get more lift. If it were farther way from the LCA mounting point you would get less lift. All from the same spacer. It basically comes down to leverage, in a way.
Either this helped you, or just confused you even more. But at this time of the morning I can't really think of a better way to describe it. Hopefully someone else will simplify things alittle.
Basically it has to do with were the lower control arm (LCA) and coil over mounting points are. If the mounting point for the coilover was closer to the mounting point of the LCA, you would get more lift. If it were farther way from the LCA mounting point you would get less lift. All from the same spacer. It basically comes down to leverage, in a way.
Either this helped you, or just confused you even more. But at this time of the morning I can't really think of a better way to describe it. Hopefully someone else will simplify things alittle.
Senior Member
Joined: Sep 2006
Posts: 1,316
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From: Northern Illinois
Originally Posted by PHS79
I am not exactly sure on this, but I think this is the reason. Take a look at a flag pole. If you push against it at a spot say 6' up the pole and move the pole 1/4" at this point, the top of the pole will move maybe 1-2". But if you were to push on the top of the pole 1/4" the spot that is 6' off the ground will only move 1/16" or less.
Basically it has to do with were the lower control arm (LCA) and coil over mounting points are. If the mounting point for the coilover was closer to the mounting point of the LCA, you would get more lift. If it were farther way from the LCA mounting point you would get less lift. All from the same spacer. It basically comes down to leverage, in a way.
Either this helped you, or just confused you even more. But at this time of the morning I can't really think of a better way to describe it. Hopefully someone else will simplify things alittle.
Basically it has to do with were the lower control arm (LCA) and coil over mounting points are. If the mounting point for the coilover was closer to the mounting point of the LCA, you would get more lift. If it were farther way from the LCA mounting point you would get less lift. All from the same spacer. It basically comes down to leverage, in a way.
Either this helped you, or just confused you even more. But at this time of the morning I can't really think of a better way to describe it. Hopefully someone else will simplify things alittle.
WOW, EXCELLENT ANALOGY!!!!!!!
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Joined: Aug 2004
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From: Phoenix
Without getting into all the details it has to do with the geometry of the suspension. And in our perticular trucks changing the mounting point by 1.25" will net you and overall 2.5" increase in ride height.
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Ya know..... Now I feel like a rookie! I've done so many straight axle lifts, that my brain was locked in to that scenario. 1.25" in the middle of two a-arms might just make 2.5" to 3" of outbound lift. :o
Thanks to all!
G4W
Thanks to all!
G4W