Re: Parking brake calipers- Wilwood
Those look similiar to the calipers on the rear of my 79 Trans Am. They are a screw in style of piston for the emergency brake. The piston works with hydraulic pressure during normal braking. When applying the parking brake there is a threaded screw in the back of caliper piston that attaches to that arm It puts manual pressure against the rotor to keep it from moving.
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79 Chevy 2wd BIG10 350 TH400
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