Attention Stock/Superstock competitors..

[CMcAllister]

Originally Posted by Dave Gantz

Let me take this a bit further and ask, how does this become an issue?

Does something get inadvertently overlooked during the build, or a repair?

When these cars were new, pedal pushrods didn't fall out.

I believe the pushrod in some cars is captured in the master cylinder by design. Some have the type that snaps in, as Hacksaw mentioned above. In the latter case, can the driver's foot catch the bottom of the pedal and pull it out?

The rubber retainers did a reasonable job of keeping the pushrod in the MC piston. It is a one time use item. Once it's jerked out of the piston, it won't work. And they can be hard to find new.

Aftermarket pushrods are not usually made with the groove for the ring either.

Most of the time, the brake light switch, and brackets, are removed on race cars. That acted as a stop for the pedal in OE systems.

A hard leaving car can cause a pedal missing a stop to swing back far enough to pull an unretained pushrod out and let it fall down.

A new to you car, a car you borrow, a car in your shop, need to be looked at.