Who has a SBC vacuum diagram?
I have a 78 Camaro. 350 V8 SBC, Edelbrock Performer intake, Holley 650 cfm carb, Flowtech headers by Holley, Cherry bomb glass pack dual exhaust directly bolted onto header collectors, and Comp cam with .470 lift.
The brakes (disc front and drum rear), rotors, and master cylinder / brake booster were recently replaced by a local shop. The car has a HARD break pedal with minimal stopping power which I suspect is due to vacuum lines improperly routed connected. Currently I have 1 vacuum line to the distributor. The other vacuum line is from brake booster to a T fitting, T fitting to PVC valve on valve cover and other hose to carb. What is the correct routing of vacuum lines OR other contributing factors to hard brake pedal and soft stopping power?
Please include experience in your answer. 10 points to best answer. All answers greatly appreciated.
I believe that the PCV valve should be routed to the air cleaner assembly, and the brake booster to the intake manifold. The only time that vacuum should be routed to the carb is on vacuum secondary carbs - in that case the carb is using vacuum but not creating it. If you have the PCV valve and brake booster both hooked up to the same vacuum source, then your vacuum system is badly messed up.
55 Chevy 210 2 dr Hardtop, 355 sbc with 60104 Lunati VooDoo cam
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