A knucklehead needs carb advice

[jt.db]

No, you do not need to change the cylinder heads to change from a two barrel carb to a four barrel carb- just the intake manifold. The carburetor flange on the intake needs to match the carburetor you are using.

I think you have a Windsor small block (not a Cleveland) so the intake manifold situation is pretty straight forward to get one that will accept a four barrel carb...

it is a cleveland as the rad hose comes out vertically, one of the differences between the windsor and cleveland

[jt.db]

Yes, that one will work just fine. However, I agree with Hemikiller, I would get it running correctly with the two barrel carburetor firdt. Be good experience rebuilding it, and after you get it running you'll be able to see if the engine needs anything else. You don't want to install the 4-barrel manifold and the find out the engine needs rebuilt or a valve job.

You can get vacuum hose diagrams here. However, if all of the emissions have been removed and you don't need to replace them to get it registered I would keep it as simple as possible. A single vacuum advance and the one vacuum hose connecting it to the carburetor.
https://www.7173mustangs.com/thread-vacu...#pid246021

Alright, so i adjusted the knob. it was all the way to the rich side i think, it was to the left. moved it over a little bit. now the car idles better and shifts better. Crazy how such a small adjustment changed the whole cars feeling.

[Hemikiller]

If the engine is a 73, it looks like someone did eliminate the PCV valve and replaced it with a spacer from an earlier car with the vacuum port. Glad you got it running better. Not sure how I thought it was a 302 car. What was the "knob" you turned?

Intake for the 2V 351C

https://www.summitracing.com/parts/edl-2.../make/ford

You'll hear a lot of differing opinions on what size carb to use for the 4 barrel swap. Here's mine - if you plan on keeping the engine stock and never doing anything other than a stock rebuild and the mildest of cams and a dual exhaust with manifolds - get a 600 cfm. If you plan on headers, a larger cam etc - get a 750. Again, the Summit carbs are a great value and run really well - I have the earlier Holley 4010 model on my '71 and am very happy with it.

[jt.db]

If the engine is a 73, it looks like someone did eliminate the PCV valve and replaced it with a spacer from an earlier car with the vacuum port. Glad you got it running better. Not sure how I thought it was a 302 car. What was the "knob" you turned?

Intake for the 2V 351C

https://www.summitracing.com/parts/edl-2.../make/ford

You'll hear a lot of differing opinions on what size carb to use for the 4 barrel swap.  Here's mine - if you plan on keeping the engine stock and never doing anything other than a stock rebuild and the mildest of cams and a dual exhaust with manifolds - get a 600 cfm. If you plan on headers, a larger cam etc - get a 750. Again, the Summit carbs are a great value and run really well - I have the earlier Holley 4010 model on my '71 and am very happy with it.

I'm planning to make 330 hp max as i dont need anything over that at 17, so just an intake swap, maybe engine/trans rebuild to service it, only modifications would be a carb and intake. (and new exaust)
its the side thing on the passenger side where it has the 2 arrows and 7 slots saying lean clockwise. it was full rich, turned it to the middle and the car idled better, shifted better too. i just got my paycheck today so i bought the rear window weatherstrip and the rope for it as well. ill let yall know if i shatter my rear window.

after moving the dot to the middle (i made sure to take before pictures in case i messed up) it was acting a-lot better. shifts much more smoothly as it doesnt idle high then low then high, it used to jolt into gear between R and D but it is now seamless almost. Park and Reverse have a very small shake, putting it into reverse from park will make it idle low for a few seconds then it will shoot back up (HEAT ON, ALL LIGHTS INCLUDING DOME, While applying brakes) so it can handle being under load without stalling out now as well. kicking on the ac won't shut the car off as well.
But please do inform me on how to delete the EGR  thing as it has empty lines that dont go anywhere, and makes the car seem less tidy. 
When i have the new plugs, wires, & distributor caps im going to re-route it nicely. as of right now its a pigeon nest in there.

[jt.db]

If the engine is a 73, it looks like someone did eliminate the PCV valve and replaced it with a spacer from an earlier car with the vacuum port. Glad you got it running better. Not sure how I thought it was a 302 car. What was the "knob" you turned?

Intake for the 2V 351C

https://www.summitracing.com/parts/edl-2.../make/ford

You'll hear a lot of differing opinions on what size carb to use for the 4 barrel swap.  Here's mine - if you plan on keeping the engine stock and never doing anything other than a stock rebuild and the mildest of cams and a dual exhaust with manifolds - get a 600 cfm. If you plan on headers, a larger cam etc - get a 750. Again, the Summit carbs are a great value and run really well - I have the earlier Holley 4010 model on my '71 and am very happy with it.

But yessir i did confirm its a Cleveland motor on the yellow sticker on the cowl, and the way the radiator hose goes into the motor (motor is the one that came with the car too)