Rear drum bleeder screw part #

[Skip Fix]

Trying to bleed the system with the new manual MC. 1": Vette manual. The rear end is the original one out of my 78 TA and has original wheel cylinders. Too much sludge in the bleeders to flow out anything so I thought I would buy some new ones like I did the front calipers(they were metric and not standard on the 79 Camaro front calipers the 500" is going in). They at least did take a standard wrench so I assume a standard not a metric.



Well since it is the weekend the A team was not in Oreilley and they couldn't find any individuals listed.We pulled new wheel cylinder and checked it and it looks like a 5/16"-18 thread. They did have a speed bleeder in a 5/16"-24. Obviously didn't screw in the new wheel cylinder.

Anyone make a 5/16-18 speed bleeder? Can't find one listed. Or anyone got a part number for just a regular bleeder screw I can give them??

I have a rear disc going in the car, as well as Wilwood fronts but would like to trouble shoot the MC swap before adding another variable. Right now even after bench bleeding MC, gravity bleeding fronts the pedal goes to the floor and has little pressure.