Thread: blocking off egr

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What you can do, (I run practically the same setup you have, 355 sbc and an edelbrock 1406) is go to your local parts house and ask for a simple vacuum gauge, nothing fancy nothing too expensive. Should come with a rubber line that fits the small vacuum lines on the very front of the carb.

Get the engine warm and set your timing to what you need it to be (I run 12* BTDC)

The right vacuum port is the one you want to hook it up to since its going to be constant vacuum. The left vacuum port is for your vacuum advance used on the distributor.

Now with the car running and the guage hooked up to the carb, take a flat head screw driver and turn one of the idle screws in front all the way down to where it closes or when the RPM's drop at a noticeable rate, then back the screw out until the vacuum goes all the way up then starts to go down, dial that vacuum in to the max.

Do the same for the other adjusting screw.

And be sure to have a Tach hooked up to the distributor and set your idle to what your motor or camshaft manufacturer tells you to set it to. I have mine set within 650 and 700 rpms since mine is a 268/268, stock lift cam. Nice and choppy.


Now take that hoss out for a drive and see how she responds from a dead start! She should act great now!

Edit: Just combine what I said with Denny, he's got more know-how than I do! I've only got 3 years experience with this whole hotrod/carburator thing :P