I'm converting to power brakes on my 64 SS and have an option for either 9 or 11 inch booster. The motor being built is a 350 with edelbrock RPM top end and advertises only around 12-13 vacuum. I know most power brake systems require about 14+. I want to stay with the stock type booster and...

I'm currently working to restore my 1970 SS396's front end and engine compartment. My immediate project is brakes related: master cylinder, booster, hold-off valve, pressure differential valve/switch, and hard & soft lines. There is precious little information concerning the hold-off valve...