So I have a 70 hemicuda with stock hemi booster. It has been in storage for about a year and now has no power to the brakes. Car was restored in 2007 and brakes worked until now. I had the booster rebuilt during resto. Vacuum is about 16 mmhg at idle. Comp Cam 513 lift/292 duration @ 0" I think.
Doesn't give me any assist at any rpm. I can hook a vacuum from my Jeep to the cuda booster (22 mmhg) and get boost but it doesn't hold the charge at all when jeep is turned off. Tried a new valve, no difference. How long should it hold a vacuum? Would like some feedback before sending it out. help:
