#1CutlassSupreme

So I just got my new Edelbrock Thunder Series 650CFM Carb and my Performer Intake. (Freakin' excited like christmas here!!)

Anyway, on the back side of the carb there is a vac port that can be used for the power brake booster, but there is also a port on the intake manifold just like on the stock 350 Olds intake.

Any suggestions on which one is best to hook into or if there is an advantage one way or the other? More vac on the carb vs. the manifold?

I'm running a bit bigger cam and I'm doing a 4-wheel power disc brake conversion with a new booster and new master cylinder. So what I gather from an earlier post is that I'll need as much vac as I can get (Btw; the car currently has stock front disc brakes.)

Thanks!

J-(Chicago)

I'd run manifold vacuum.

joe_padavano

There's absolutely no difference. They both provide manifold vacuum. Just pick one and cap the other.

#1CutlassSupreme

Kinda figured they were bout the same, but wasn't sure if one beling closer to the head had more or less vac than the other.

Thanks again.