[Ryan_K]

I've got a bit of a predicament, I have 1 vacuum port on the intake for the brake booster, 1 port on the back of the carb (Holley 750 0-80573S) for the PCV line, 1 timed port for the vacuum advance, and a manifold vacuum port on the bottom of the carb. As per this picture http://www.jegs.com/photos/500/510/510-Supercharger_Carbs.jpg , I need to hook up the power valve port to a manifold vacuum. Is it safe to hook up both this and my trans modulator using a Y connector to the bottom carb vacuum port?

Thanks.

 

[novaderrik]

put the trans modulator to the same threaded hole in the intake manifold as the brake booster. a little junkyard scrounging will find you a fitting to do this.

 

[Tom Mobley]

That looks like a boost referenced PV connection on a blower carb. Are you running a blower?

 

[Ryan_K]

Yes I am running a blower, I put a T from the manifold going to the booster and trans modulator, took it for a quick run today and it seemed okay, brakes worked fine, trans shifted smooth, lots of power. Odd rattling noise on the blower but I posted another thread for that, it's a Weiand 142.