Can I use a T fitting on my intake manifold port to clean up engine bay

SBC 350. I want to run my va***n advance/pcv to a port on the rear of the intake.

Can i buy a fitting with both of these ports that'll screw into the intake manifold?

I just wanna clean up the front of the engine, Id plug the ports on the carb

Just wanna know if its OK to run the PCV AND the va***n advance here?

Thanks

 

The PVC is looking for full time manifold vacuum so it would be OK. The vacuum advance on the distributor usually wants ported vacuum that only comes in when the throttle plates open.

 

Ive heard you wanna hook manifold va***n to the va***n advance

 

All my SBC had the vacuum advance hooked to full vacuum, either on the carb or later
models on the intake.
The PCV should be hooked into the carb base for even distribution (for want of a better word), if it was hooked on the back of the manifold it would only be fed into one plane on the manifold

 

Poo

Whatta bout using a T comming off the back of the carb (edelbrock) and using one for the PCV and one for the power brake booster?

 

You heard correctly. Manifold vacuum for the vac advance.





The only thing to worry about is the location of the port for the PCV. The factory always ran it to the base of the carb so that the added air gets distributed evenly to all of the cylinders and does not lean out a single cylinder.

 

Im working with a 350 with performer rpm intake and an edelbrock 1406 600cfm carb

So I shouldnt plumb the pcv into the rear of the intake port (between dizzy and carberator?)

 

The pvc plumbs into the 3/8 fitting in the center of the front on that carb
Mine could be a bit less cluttered though.


Whether you use ported vacuum or manifold vacuum depends somewhat on what setup you are running. A lot of the earlier pre smog engines ran and run well with the manifold vacuum the newer distributors often require ported vacuum so that the vacuum advance will drop back from full advance.

 

That carb has a port for the PCV valve at the base and a manifold vac port for the vacuum advance. You want the port with full vacuum at idle for the advance so that it won't heat up in traffic.

 

i did that on my vette for 5 yrs and when i went from a speed demon back to a q jet i moved the PCV in to the front of the carb and the car ran a lot better. i mean a lot better

 

I have found that hooking the dizzy to manifold vac allows higher compression engines to start at a less advanced static timing for easier starting, and the advance comes in after starting for a smooth idle-- hooking to ported vac gives lower compression engines advance as the throttle opens for better response under acceleration, and these engines don't need to have the timing set back for easier starting. If you add the vac advance to the high compression engine through ported vac, you will probably get the dreaded pinging, if you use manifold vac it will start on less static, and come up on advance at idle for a smooth idle, then you rely on centrifugal as the engine speeds up- hopefully you have more centrifugal coming on than you have vac leaving as the throttle is opened----- to a point. This will start some discussion, but is my experience.

 

So pretty much my PCV should be routed to my center port in the front of the carberator?...

 

Hooked my vac adv to a fitting behind the carb. cleaned the front of the engine up. now to hide the spark plug wires..

 

x2 ^^^^

 

So im stuck with routing PCV to front port on the carb huh