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Does anyone have any schematics of the alignment of the rear end?
i have had the trailingarms of so would like to get it in the ballpark before i drive it to a alignment shop
2020 Corvette of the Year Finalist (performance mods)
2019 C3 of Year Winner (performance mods)
2016 C3 of Year Finalist
If it was good before and you counted the spacers on each side of the trailing arms it will be the same. Mine was touched by Bubba so... not even close. I think mine was pointing outward over a half inch on each side. I used string and some straight edges on the rear tires....pull the string across the straight edges from rear to front and tie them to jack stands. Pull them away from the straight edges until they are clear, then back towards the straight edges until it just touches. that will give you the direction the tires are pointing. I believe the spec is 1/4 inch in total +/- 1/16th. I measure from the string to the frame inside the front wheel well. use a flash light so you arent near any factory frame deformations. It works perfectly
Does anyone have any schematics of the alignment of the rear end?
i have had the trailingarms of so would like to get it in the ballpark before i drive it to a alignment shop
Its easy enough to DIY align the rear.
3 Simple steps.
1. Set camber equal both sides.
2. Set Thurst angle so both wheels center to front axle.
3. Set total toe.
Camber requires a simple phone app / or angle cube ..etc.
Here is my tool.
Step 1
Step 2
Set the rear thrust angle.
Here are the tools I use. 1 mounting bar for magnetic laser pointer.
Measure the angle of the rear wheels relative to the front axle. Adjust until they are equal on both sides.
Step 3. Adjust for total toe.
Below shows example total toe = toe in. 9mm. top side is 120mm vs bottom side = 129mm if the top measurement is greater than the bottom side then we have a toe out condition.
What it looks like to measure total toe.
My tape measure is attached to the bars like this.
The toe then is calculated using math.
measure the distance between the 2 measuring tapes. eg 2784mm
Its easy enough to DIY align the rear.
3 Simple steps.
1. Set camber equal both sides.
2. Set Thurst angle so both wheels center to front axle.
3. Set total toe.
Camber requires a simple phone app / or angle cube ..etc.
Here is my tool.
Step 1
Step 2
Set the rear thrust angle.
Here are the tools I use. 1 mounting bar for magnetic laser pointer.
Measure the angle of the rear wheels relative to the front axle. Adjust until they are equal on both sides.
Step 3. Adjust for total toe.
Below shows example total toe = toe in. 9mm. top side is 120mm vs bottom side = 129mm if the top measurement is greater than the bottom side then we have a toe out condition.
What it looks like to measure total toe.
My tape measure is attached to the bars like this.
The toe then is calculated using math.
measure the distance between the 2 measuring tapes. eg 2784mm
If it was good before and you counted the spacers on each side of the trailing arms it will be the same. Mine was touched by Bubba so... not even close. I think mine was pointing outward over a half inch on each side. I used string and some straight edges on the rear tires....pull the string across the straight edges from rear to front and tie them to jack stands. Pull them away from the straight edges until they are clear, then back towards the straight edges until it just touches. that will give you the direction the tires are pointing. I believe the spec is 1/4 inch in total +/- 1/16th. I measure from the string to the frame inside the front wheel well. use a flash light so you arent near any factory frame deformations. It works perfectly
ok yeah I counted the shims an put them back, but i have changed the trailingarms bushings to Heimjoints, so i needed some spacers to get them into the existing shims, should be ok but I'm gonna measure when i have it back together
I pulled my rear diff for rebuild on my car last year. I also removed the trailing arms, leaf spring, strut rods, and shocks. I marked the shims so they are in the same spots they came out of so I didn’t worry about toe or caster. The camber is off on my car and I purchased a Zachman camber alignment tool so I can do the camber with some accuracy. The tool just clips onto the wheel and you put a camber magnetic level on the mag mount to read the camber angle. You’ll need to make adjustments and drive the car to let the rear suspension settle. Re-read the camber and re-adjust accordingly. I replaced the original strut rods with a different style that is easier to adjust rather than using the eccentric setup that came from the factory.
Both tools are available on Amazon:
Zackman Scientific Wheel Alignment Clamp Tool Kit for Magnetic Camber Gauge, Fits 11-25" Rims
Zackman Scientific Magnetic Camber Gauge for Wheel Alignment
You’ll need to make adjustments and drive the car to let the rear suspension settle.
This cannot be stressed enough. For best results, after a ride around the block, slowly roll onto the flat driveway or garage floor without injecting any abrupt braking action. The suspension needs to be in its completely neutral state.
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Rear end alignment
