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

The software calculates an Anti-Squat value of 174.7% for the stock 79 Mustang setup shown.

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

The instant center length is 34.3 inches and the instant center height is 13.2 inches.

What are the pinion and driveshaft angles shown?

Pinion Angle is 2.00, Driveshaft Angle is 2.00, and Trans Yoke Movement is .00.

What bracket hole coordinates are used in this 4-link model?

Top Bracket: rear (axle) #1 at 0" x 19.5", front (chassis) #1 at 7.5" x 18.13". Bottom Bracket: rear #1 at 0" x 10.38", front #1 at 18" x 11.88".

What software produced this diagram?

The '4 Link' program by Performance Trends Inc., with suspension type set to 4 Link.

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Stock 1979 Ford Mustang 4-Link Suspension Geometry & Anti-Squat - Performance Trends

Suspension geometry software diagram of a 79 Mustang 4-link suspension with instant center plotted

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4-Link suspension geometry schematic plotting instant-center location and anti-squat percentage over a Mustang side profile.

AI caption September 2006 · Photo 31 of 156

This is a screenshot from the Performance Trends Inc. '4 Link' suspension analysis software, showing a saved project titled 'STOCK 79 MUSTANG' (registered to Douglas C. Rahn). The screen displays a side-profile schematic of a Mustang with its rear 4-link suspension geometry drawn in, including link lines converging to a calculated instant center. Key computed values shown are: Instant Center Length 34.3 inches, Instant Center Height 13.2 inches, and Anti-Squat 174.7%, with suspension type identified as '4 Link'. Below the diagram, driveline angles are reported: 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 0" x 19.5" and front (chassis) #1 7.5" x 18.13"; Bottom Bracket rear #1 0" x 10.38" and front #1 18" x 11.88". A 'Show Dynamic Changes' panel (set to No) offers inputs for Rear Spring Compression and Front End Rise. A reader can learn the stock 1979 Mustang 4-link geometry, its resulting instant center location, anti-squat percentage, and driveline angles as modeled in this software.

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Frequently asked questions

What is the anti-squat percentage for a stock 1979 Mustang 4-link rear suspension?: The software calculates an Anti-Squat value of 174.7% for the stock 79 Mustang setup shown.
Where is the instant center located on the stock 79 Mustang 4-link?: The instant center length is 34.3 inches and the instant center height is 13.2 inches.
What are the pinion and driveshaft angles shown?: Pinion Angle is 2.00, Driveshaft Angle is 2.00, and Trans Yoke Movement is .00.
What bracket hole coordinates are used in this 4-link model?: Top Bracket: rear (axle) #1 at 0" x 19.5", front (chassis) #1 at 7.5" x 18.13". Bottom Bracket: rear #1 at 0" x 10.38", front #1 at 18" x 11.88".
What software produced this diagram?: The '4 Link' program by Performance Trends Inc., with suspension type set to 4 Link.