Quote:

I have just examined about 40 of them, all have a deep pushrod recess. There is no way the pushrod can fall out. Some of the early/mid 60s stock pistons on masters designed for PB only had just a small dimple for the booster pushrod centering which would be very dangerous with manual brakes, but that is NOT the case with these.

Rick



Okay guys educate me some more. steer me in the right line of thought here:

Power Brakes pushrod do not need a reatainer?

AND

Manual Brakes do need a retainer?

I actually have a PB and I noticed a slight ridge in the piston about 3/4" in. It does not look like a grove though, just a slight ridge.

I admit that i lack experience with the non power brakes as I have allways had PB cars.

'73 GK6 Challenger Rallye - 340 4-Speed