My thought is that might be true if you are using carbs before they became fully tunable. Modern carbs that are larger can be tuned down. So why buy a larger carb. Tune it down if needed and you have the cfm for the future without the expense of a new carb.
I ran an AED 1000 on my 467 and had to tune it up. Any carb is limited by their body and base plate.
Rick

 

Yes yes yes, it can. My Holley 600 vs Franken carburetor can spank almost any 750-850 Holley at the track. I ran an astounding 11.59@115mph with this little carb and my 1000 Mighty Demon was only 1/2 tenth quicker. Building a 2nd one for my tunnel ram setup they work so good.

 

Yes yes yes, it can. My Holley 600 vs Franken carburetor can spank almost any 750-850 Holley at the track. I ran an astounding 11.59@115mph with this little carb and my 1000 Mighty Demon was only 1/2 tenth quicker. Building a 2nd one for my tunnel ram setup they work so good.

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You said yes it can but yet you said that it ran quicker with the bigger carb?

 

What do you have going on there at the top with the rubber hose?

 

It extends the bowl vents and keeps any fuel that jumps out of the bowl vent, either during hard acceleration or hard braking, from dropping down the carb throats. Sends it over to the opposite fuel bowl or traps it to return to the bowl it originated from.

Holley puts a similar deal made from hard line on all their Truck Avenger carbs.

 

I'd believe it.

 

I don’t think any intake and carb test is accurate except for the engine it’s on. Every engine wants and needs something different.

 

He's also said he gained installing his dominator with a HVH super sucker adaptor (4500 to 4150) too!
I know my lil 9.12:1 441 was down 70+ hp when they realized the carb on it was a 650!
An adaptor and a 1050 dom and it went to 622.

 

But but but, Dominators are to big and an 850 will work better they say
Good job finding that missing HP.