Search results for query: *

A 1971 383 4BBL car also came with a 625 cfm Carter AVS carb #6125S

This picture shows the Edelbrock 650 CFM AVS2 carb and it's still a square bore.

So you installed a square bore carburetor onto a spread bore intake manifold with one thin gasket. If you install the seal plate and 2 gaskets (shown in post #12) the engine will run better than it does now.

No your not losing it, it looks like an M1 dual plane intake manifold.

Did you try to spray the secondary throttle shaft on both sides of the carb?

If you have not already tried it you can swap the metering rods that are in the carb and install the 130-7347 rods from the tuning kit.

Looking at these pictures with the engine cold the choke plate should be fully open and it's not. To get the choke plate open try to following the instructions in post number 6.

Yes, a good quality rebuild kit usually comes with one.

Do you have the original insulator installed in between the carb and the intake manifold?

Yes Carter was producing strip kits for the AVS carb decades ago

Some pictures please.

I have had a few of those original 625 CFM Holley carburetors they work good on a 383 engine and they do have larger secondary barrels.

Did you follow the instructions when you installed the carburetor? Maybe you have a vacuum leak.

If the secondary air valve is opening too slowly you can turn the adjuster clockwise until it starts to open too soon and bogs. Then turn the adjuster counter clockwise a little bit at a time until you get the secondary air valve opening at the right time.

It could help to have more pictures of both sides, the rear and the top of the carburetor.

The little vacuum ports on the front are for the distributor vacuum advance, the one on the passenger side is for emissions controlled engines the other one is for non-emissions engines.

Was this insulator included in the carburetor rebuild kit?

Those plugs are usually plugging up holes that do not have any threads.

Basically the 1968 Carter AVS carb came with one mixture screw and 1969 and later carbs came with two mixture screws.