where or how do I hook up the vacuum line for the power brake booster?
there is no acc. hole for hose fitting in intake

 

You can tee off of the PCV port on the carb.

 

Of course not.

It's a race car part. Race cars don't generaly have power brakes.

If you need it, make it. Drill a hole and tap it to ¼" pipe. Facbricate. That's what racers do.

 

so just drill and tap a hole in where?
one of the runners in rear or what?


and my carb has no pcv port already thought that

 

Front/rear/side of the plenum

 

Just drll and tap where ever you want. You could even do it on a runner, but i wouldn't. Just pick a good location on the plenum that won't be in the way of anything.

 

Do like RB says... in the manifold's plenum, drill a hole, tap it for a fitting, install said fitting, and hook up your hose.

 

So, did you tap that ho already? Does she suck or blow?

 

Never tee off for a brake booster, it needs it's own dedicated vacuum line to work right.

 

I did it before when i swapped my Q-jet for a holley on my original iron intake.

It worked fine for me, but i was also pulling 21 psi vacuum.

My new Weiand intake has a 3/8 NPT hole in the plenum.

 

Just because it seemed to be working doesn't mean it was working properly. I've tried it, the brake pedal was a lot harder and that was with 15 inches of vacuum.

 

You can get carb spacers with the hole for a vaccum line also, but if your running a stock hood spacers might not be an option.

I've personally taken 3 of my different spacers-drilled/tapped them so I did'nt have to molest the intake.

 

thnaks for the info everyone

would it work well if I put a fitting on a runner?
and would it hurt anything perfromance wise?