66 Sat
Well-Known Member
Is there any disadvantage to running the brake booster vacuum line to a carb port instead of the intake manifold?
I've currently got mine running to the intake and the spark plug that is in direct line to the intake runner where the booster connects always gets black and crusty in comparison to the other 7 plugs. I think I read somewhere that the brake booster can affect the mixture and cause this, but I'm unsure. I was thinking of connecting to the vacuum port at the back of the carb (Edelbrock AVS2) and see what happens.
You can see the vacuum port circled in blue on the below photo.
I've currently got mine running to the intake and the spark plug that is in direct line to the intake runner where the booster connects always gets black and crusty in comparison to the other 7 plugs. I think I read somewhere that the brake booster can affect the mixture and cause this, but I'm unsure. I was thinking of connecting to the vacuum port at the back of the carb (Edelbrock AVS2) and see what happens.
You can see the vacuum port circled in blue on the below photo.