What is the 'Herb Adams mod' and how does it affect my car?

The 'Herb Adams mod' refers to using the raised mounting hole on this leaf spring mount. It changes the suspension's anti-squat geometry, which can improve traction under hard acceleration by reducing how much the rear end squats. Using the top hole also slightly lowers the rear of the car.

Does this mount come with all the hardware needed for installation?

Yes, this leaf spring front mount includes all the necessary hardware for installation. It's designed to bolt into the factory location on your vehicle.

What is the benefit of the two different mounting locations?

The two mounting locations allow you to fine-tune your suspension's behavior. The stock location offers standard anti-squat characteristics, while the raised location provides increased anti-squat for better acceleration grip and can also slightly lower the rear ride height.

UMI Performance 70-81 GM F-Body Leaf Spring Front Mount

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Specifications

Brand: UMI Performance
Part #: 2624-B
UPC: 2624-B

UMI Performance 70-81 GM F-Body Leaf Spring Front Mount

Name: UMI Performance 70-81 GM F-Body Leaf Spring Front Mount
Brand: UMI Performance
Price: 250.23 USD
Availability: InStock

$250.23

On Backorder

Order now to reserve yours — we'll ship as soon as stock arrives. Full refund if we're unable to fulfill.

Fits 1970-1981 Chevrolet Camaro. UMI Performance leaf spring front mount offers stock and raised mounting holes to adjust anti-squat.

Key Features

Fits 1970-1981 Chevrolet Camaro and Pontiac Firebird.
Replaces the factory front leaf spring mount.
Features two mounting locations: stock and a +3/4" raised hole.
The raised hole allows for adjustment of anti-squat characteristics (Herb Adams mod).
Using the raised hole lowers the rear of the car approximately 3/8" compared to stock.
Race-proven design.

⚠️ CA WARNING: This product can expose you to chemicals known to the State of California to cause cancer and/or birth defects or other reproductive harm. Learn more

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Fits these vehicles

Chevrolet Camaro 1970-1981
Pontiac Firebird 1970-1981

Product Details

UMI Performance is known for making well-built suspension components for classic American muscle cars. This front leaf spring mount is designed specifically for your 1970-1981 GM F-Body, like your Chevrolet Camaro or Pontiac Firebird. It bolts right into the factory location, making installation straightforward. This part replaces the stock front leaf spring mount, which is a key piece for controlling how your rear suspension squats under acceleration.

What makes this mount stand out is the choice of two mounting locations. You can use the stock hole for a standard setup, or opt for the +3/4" raised hole. This raised location is often called the “Herb Adams mod” and is race-proven to change the anti-squat characteristics of your suspension. Using the top hole can also lower the rear of the car by about 3/8" compared to the stock position. It’s a solid option for anyone looking to fine-tune their car’s handling.

This mount is 100% Made in the USA and includes all the necessary hardware for installation. It’s a well-built piece that’s ready to handle the demands of spirited driving.