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It would be a good choice.

I would buy the street demon, I have used them since they came out they are good carbs. In fact the last one I bought, I removed an 700 DP and replaced it with the 625 street demon on my 340 Duster. I am running about the same combo as you, with a little more cam and the same gears, but a manual...

Did Hops send you a sheet with the distributor advance, when he done your distributor? I know the one he built for me, he included it.

When you guys plotted off the curve, it looks like it was running out of fuel.

I have had two of the 625 Street Demons, both good carbs. I bought the first one and it ran excellent hot or cold, sold the truck and it went with it. The second one has really impressed me, my Duster had not been started in two years, changed the battery out, cranked the engine over until I got...

If you are going to use an electric pump, I would just remove the mechanical one. Put a block off plate, where the mechanical one was, and mount the regulator to the block off plate.

You guys are making this way to hard, simple green, tap water, crock pot, boil it over night, done.

What shape is the fuel filter and fuel pump in?

I would go to a NAPA store before any of the other box store part places, they tend to have better quality. You are looking at like what 2' of hose at the most and a few clamps.

I had good luck using a large crock pot, water and simple green.

I have never had issues with the AFB / Eldebrock style carbs, they just work. I really like the Street Demons, just put a new one on my Duster. They are a set and forget about it carb.

My guess on how it got stripped in the first place, the eccentric on the cam was as the high point, putting pressure on the fuel pump arm. Somebody changed the pump, and bound it up, so they just tightened the crap out of the bolts to pull it flush with the cover.

I have a stock style carter mechanical pump on my Duster and it will creep up to 9 psi at idle. Carter M6866 Carter Muscle Car Mechanical Fuel Pumps | Summit Racing So unless you have put a gauge on your pump, who knows what it puts out.

Sorry missed the nipple part.

Mopar Performance P4529880 Mopar Performance Valve Cover Breathers | Summit Racing

This should work for you. Spectre Performance SPE-4960 Spectre Performance PCV Air Cleaner Smog Fittings | Summit Racing

I have had good luck with these. Carter M6866 Carter Muscle Car Mechanical Fuel Pumps | Summit Racing

Moroso 62295 Moroso Power Valve Testers | Summit Racing Vacuum Pump

I would buy a power valve tester and a mity vac. I have found the advertised and actual on alot of power valves to be not accurate.

Take a look at the newer street Demon. I have great luck with the 625 on street driven small blocks, throttle response is excellent. They also sell a 750 version which should work good on a 440.

Found the wiring colors. Factory wire Fuel - Dark Blue Dash lights - Orange 12V key on - Blue / White tracer Turn signal LH - Lt Green...

I added the turn-signal lights, high beam and brake indicator light to mine. I cut the factory plug off and wired them. Somewhere I have the wiring colors wrote down for a 73 Duster. If I find them I will post them. Since this picture I added two more 2 1/8" gauges to the dash on the right...

I used an auto meter gauge hooked to my original sending unit, it is very accurate.

i know the 625 street demon I had, is a very versitle carb. It worked good on a stock 318 with nothing more than LD4B intake and stock exhaust. Same carb I used on a 10.81 compression 5.9 mag with stock eldebrock heads, added headers and duel exhaust. Simple carb adjustments and it ran good...

625 street demon, most likely will work fine out of the box. Street avengers seem to always be lean out of the box, I have one and do not care for it.

I would take the plugs out and sandblast them, and reinstall.

I have a new 440 six-pack intake in the box, I need to open it and see if that linkage is in there. I bought it new a few years ago.

I seen just last night on facebook marketplace a guy had a 72 trap door, and a earlier dual snorkel, for $75 each.

Summit sells spacers of various thickness that go between the carb and aircleaner.

The carbs are on sale right now at Summit Racing. Also Fi-Tech makes a fuel injected set up for 6-pacs. It is the intake that is hard to find.