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You are confusing tuning parts with carb choices. There are very few CarterBrock choices for a given size of carb when compared to the Holley platform.

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ok keep telling yourself that. A holley 750 DP/HP or even a vacuum would give him more HP.

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A holley 750 DP/HP or even a vacuum would give him more HP. I have 3/4's of a holley 750dp in the garage. If somebody wants to buy the rebuilt kit and 2 fuel bowls, I'll rebuilt it and give it to him. If it doesn't run 2.5 tenths faster in the 1/4 mile I'll buy all parties involed a 30 pack of Bud.

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Can't you buy the Mopar M1 w/ a spread bore? I'd think a 440 w/ a 1000 TQ would be a good running car.

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Can't you buy the Mopar M1 w/ a spread bore? I'd think a 440 w/ a 1000 TQ would be a good running car.

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Yes, the M1 has a spreadbore pattern but if anyone is going to tool up and make a new carb they are going to want to have it fit a maximum number of vehicles and spreadbores are in the minority.

440 runs great with a TQ, I campaigned for years with an 850 on a TM-7 with an adapter plate. Back on the shelf waiting to be used again on a different car now that the GTX is sporting the tunnel ram again.

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Now that you mention it, spreadbores are none existent in CarterBrocks. Again they are the simpler carb with less choices for those that like that.

But Holley and their partners are making more and more carbs with dual patterns. Including the new Speed Demon.

I just couldn't help mentioning it.

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But Holley and their partners are making more and more carbs with dual patterns. Including the new Speed Demon.

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The problem is there are more people that think they are sealed units than don't.

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Then they are very much in the wrong hobby and are in the vast minority, perhaps its just were you live.

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He had ZERO intention of using that carb , it was just a test to see where it was out of the box.

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Wait- Did you not state "he knew his way around a carburetor" and now you are stating something else? huh.

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Did you skip over the part where he swapped on the CARTER 750 , which you state is the SAME CARB, and the engine didn't run like a piece of crap ?

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You have reading comprehension issues my friend, I stated they were virtually the same castings. Jetting, metering rods and spring rates make a huge difference.

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But again ZERO INTENTION of running that carb either. A strip kit is just jets, rods and springs, it does nothing if the carb itself, with incorrect size internal passages, is the problem.

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And you know this how? You picked a poor example "as proof" and display a bit of ignorance about how the AFB's are constructed. I have a problem taking your word on the subject as to the shortcoming of this particular carburetors design. On the other hand I own several Edelbrock and Carter AFB's and they all work great and have rebuilt and tuned several hundred over the decades for a living (including Holleys, TQ's and AVS not to mention non-mopar stuff like quadrajets and even the horrible VV carb from Ford!) for other people without issue.

A single example in which the user freely admits making no changes to the unit is not a sweeping indictment on Edelbrock carbs.

I find it amusing that people will spend vast amounts of time on Holley carbs "drilling this circuit" or "swapping out this air bleed" or "trying this modification" but won't spend some time learning how AFB's work which are the simplest of devices.

But that's ok, more for me ;-)

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Oh sorry , you are the king of carb tuning , everyone else on the planet is an IDIOT compared to you .....

I'm out , you're

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But Holley and their partners are making more and more carbs with dual patterns. Including the new Speed Demon.

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Ahem.

You are aware that both the Carter and Edelbrocks AFB's also have a dual bolt pattern? And have done so for decades?

The new "TQ" from Demon is not a spreadbore carb, its designed for squarebore intakes.

Dual pattern and spreadbore/squarebore are two different things.

Spreadbore carbs never caught on in the market even though they are an excellent idea with small primaries and much larger secondaries. I doubt anyone would tool up to make a new design. You can sell just about anyone a squarebore carb but spreadbore the market is limited and there is plenty of Quadrajets out there.

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Still, spreadbores are non existent in CarterBrocks. They are simpler with less choices.

But you're right that they bolt onto both styles of intakes, there is no dispute there.

I am not sure that I would agree that the new Street Demon is not a spreadbore or that it was designed for square bore intakes. Or that spreadbores never caught on. Demon claims it was designed for both, hence the GoogleValve or whatever they are calling it. There is certainly a large difference in the primary and secondary bores.

Tell ya what; if you don't want to call it a spreadbore, why don't we call it a Google bore? And we'll note that it was designed by a former Carter guy.

Any chance that will make you happy?

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I think most of you guys commenting on the Eddy 750 forget who Edlbrock sells a majority of the carbs to, it is not Mopar people

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Still, spreadbores are non existent in CarterBrocks. They are simpler with less choices.

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I am not sure that I would agree that the new Street Demon is not a spreadbore or that it was designed for square bore intakes

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Any chance that will make you happy?

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Still, spreadbores are non existent in CarterBrocks. They are simpler with less choices.

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What if !!

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And the comment on air bleeds has been missunderstood. I have never monkied with air bleeds..is that better for you?

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This is a really sophomoric argument.

Arguing which 1950s technology is superior. The Holley 4150 platform first saw wide service on Phord's Thunderbird. And AFB stands for Aluminum Four Barrel because they dated to a time when carbs had cast iron bases.

The CarterBrocks are simpler carbs that have far fewer sizes with very few choices. But, when right, they are extremely dependable.

The Holley style platform has far more sizes available. And a ton of different combos in each of those sizes.

As far as tuning, I don't think that there are a heck of a lot more guys that understand carbs today than there were 40 years ago. So the way it runs their car OOTB determines whether it rocks or is crap. More luck of the draw than precise planning or tuning or even brand.

Having said that, I am getting ready to buy the carb designed by a former Carter engineer working for a subsidiary of Holley; the new Street Demon.

That way we all win!

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That is funny!!
Since Edelbrock did pick up where the Carter/Weber people left off. And funny that he perfected a carburetor design from them also. The Aluminum Four Barrel is unique because of it's self adjusting secondary air (flap) valve. Works automatically to engine airflow demand. A mismatched/poorly tuned motor combo will NOT allow this type carb to perform flawlessly. Is it an "all-out" carb? No...but AGAIN, it can deliver outstanding performance when PROPERLY tuned for the street, strip or both!

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"480 calculated flywheel hp isn't too shabby considering he is grossly undersized on carburetor CFM, I bet it has wicked throttle response."

You hit the nail on the head. He'd make much more power with a better carb. A 750DP or even better HP would give him much better performace. Even a thunder 800 would..
I'm glad somebody brought up Thermoquads. I love them, however finding a good one seems hard these days.
FWIW a big 4bbl would probably run better on my car, but I've always wanted a 6-pack, I can't afford a hemi

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popping power valves,

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Most Holley's have blow out proof protection now