What is the anti-squat percentage for a stock 1979 Mustang 4-link rear suspension?

The Performance Trends 4 Link software calculates the stock 79 Mustang's anti-squat as 163.6%.

Where is the instant center on a stock 79 Mustang 4-link setup?

The instant center is located at a length of 34.2 inches and a height of 12.1 inches, per the software's calculation.

What pinion and driveshaft angles are shown for the stock configuration?

Pinion angle is 2.00, driveshaft angle is 2.00, and trans yoke movement is .00.

What bracket hole locations does the model use?

Top bracket: rear (axle) #1 at 0" x 18.375", front (chassis) #1 at 7.5" x 17". Bottom bracket: rear #1 at 0" x 9.25", front #1 at 18" x 10.75".

What software produced this diagram?

It is a screenshot of '4 Link' by Performance Trends Inc., which analyzes 4-link suspension geometry and can show dynamic changes such as rear spring compression and front end rise.

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Stock 1979 Ford Mustang 4-Link Rear Suspension Geometry - Anti-Squat & IC Data

Suspension geometry software diagram of a 79 Mustang 4-link with instant center and anti-squat readout

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4-Link suspension geometry schematic showing instant-center and anti-squat figures with bracket-hole settings for a Mustang rear suspension.

AI caption September 2006 · Photo 30 of 156

This is a screenshot of Performance Trends Inc.'s '4 Link' suspension analysis software, showing a saved project titled 'STOCK 79 MUSTANG' (registered to Douglas C. Rahn). The screen displays a side-view schematic of a Fox-body Mustang with the 4-link rear suspension geometry plotted, including link lines converging toward an instant center. Calculated values shown across the top are: Instant Center Length 34.2", Instant Center Height 12.1", and Anti-Squat 163.6%, with suspension type identified as '4 Link'. Below the diagram the program reports Pinion Angle 2.00, Trans Yoke Movement .00, and Driveshaft Angle 2.00. A 'Holes Used' table lists bracket hole coordinates: Top Bracket rear (axle) #1 at 0" x 18.375" and front (chassis) #1 at 7.5" x 17"; Bottom Bracket rear #1 at 0" x 9.25" and front #1 at 18" x 10.75". A 'Show Dynamic Changes' panel (set to No) offers fields for Rear Spring Compression and Front End Rise. A reader can learn the stock 1979 Mustang 4-link geometry values and anti-squat characteristics as computed by this software, useful as a baseline for Fox-body rear suspension tuning.

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Frequently asked questions

What is the anti-squat percentage for a stock 1979 Mustang 4-link rear suspension?: The Performance Trends 4 Link software calculates the stock 79 Mustang's anti-squat as 163.6%.
Where is the instant center on a stock 79 Mustang 4-link setup?: The instant center is located at a length of 34.2 inches and a height of 12.1 inches, per the software's calculation.
What pinion and driveshaft angles are shown for the stock configuration?: Pinion angle is 2.00, driveshaft angle is 2.00, and trans yoke movement is .00.
What bracket hole locations does the model use?: Top bracket: rear (axle) #1 at 0" x 18.375", front (chassis) #1 at 7.5" x 17". Bottom bracket: rear #1 at 0" x 9.25", front #1 at 18" x 10.75".
What software produced this diagram?: It is a screenshot of '4 Link' by Performance Trends Inc., which analyzes 4-link suspension geometry and can show dynamic changes such as rear spring compression and front end rise.