Thrust angle adjustment on a '72
Race Director
Joined: Apr 2011
Posts: 11,183
Likes: 3,335
From: North of Toronto - Ontario
By moving the shims. Imagine one rear wheel is perfectly straight and the other is angled in, the toe would look correct but the thrust would be off. As you move the straight one in and you move the other one out the same amount, toe stays the same but the thrust angle moves towards the center.
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Last edited by Mooser; Jan 23, 2023 at 09:45 PM.
Race Director
Joined: Apr 2011
Posts: 11,183
Likes: 3,335
From: North of Toronto - Ontario
Here's where I went through it with much help from cagotzmann and several others
https://www.corvetteforum.com/forums...-location.html
I ended up with a rear toe of 0.15625 and the thrust angle being .031" off center (I shifted another .006" and didn't re-measure everything but that should have brought it really close to zero)
M
https://www.corvetteforum.com/forums...-location.html
I ended up with a rear toe of 0.15625 and the thrust angle being .031" off center (I shifted another .006" and didn't re-measure everything but that should have brought it really close to zero)
M
Last edited by Mooser; Jan 23, 2023 at 09:43 PM.
Advanced
Joined: Oct 2022
Posts: 90
Likes: 69
Just did a 4-wheel alignment in the garage. Just one way of checking and adjusting everything, not shown in this vid is adding extra + castor by milling the trailing arms top mountings holes into slots .500" made a huge difference in high-speed tracking and stability, but only tested to 140 MPH for now.
Melting Slicks
Joined: Jun 2011
Posts: 3,116
Likes: 598
Here is my process for alignment measurement / adjustments.
My DIY Alignment method - CorvetteForum - Chevrolet Corvette Forum Discussion
1. setup the rear wheels equal on both sides relative to the front axle. in picture measures as 9 mm.
2. Then measure what the total toe is, and adjust equal on both sides. (moving shims)
