What carb are you running in your 493?

[Kern Dog]

There will be varying opinions, yeah.
Sometimes it does pay to follow what the factory did. I dont think that many cars from the musclecar era came with a mechanical secondary carburetor except the Hemi.
My experience is with vacuum secondaries and I have no complaints about the Holley based carburetors.

 

[koosh]

There will be varying opinions, yeah.
Sometimes it does pay to follow what the factory did. I dont think that many cars from the musclecar era came with a mechanical secondary carburetor except the Hemi.
My experience is with vacuum secondaries and I have no complaints about the Holley based carburetors.

Thanks. I wasn’t sure if a “built” 493 could spare the vacuum. I know nothing of this stuff , especially if I should be looking at 750 vs 850

 

[BSB67]

How a carburetor works is not of opinion.

You like vacuum carbs, that’s great. Just be accurate if you’re making statements about carbs that you aren’t using.

If you want to try a double pump 850 or 950, I’ll get you one of each to try. If you’re at Carlisle, I’ll bring them for you to take back. Try them and you can report out on what you’re impressions are. Seriously.

 

[old guys rule]

Not aware of any Edel carb that has vac sec......

The Edel 850 AVS2 800 cfm has annular pri boosters for better throttle response. An AVS carb that 'likes fuel' [ post #2 ] has a tuning problem, not a carb problem. Or just feeds a lot of cubes which makes it thirsty...

All AVS carbs are vacuum secondaries. ( Air Valve Secondary). I meant 800cfm not 850.

 

[BSB67]

To the OP. Kinda think you’re missing the picture here. A 2bbl carb can work. So can a 1050 Dominator. What I think you’re missing is that you’re not looking for what is the best (what ever that means) for your motor, you’re looking for what is best for you. Your post suggest you need something you can bolt on and it will be perfect for car show and cruising.

Of the 100s of carb offerings out there, I cannot tell you which one that is. If you were in my driveway right now wanting what I think would be simple, turn-key and go carb out of my stash of carbs, I’d offer you my Holley 4779.

 

[koosh]

To the OP. Kinda think you’re missing the picture here. A 2bbl carb can work. So can a 1050 Dominator. What I think you’re missing is that you’re not looking for what is the best (what ever that means) for your motor, you’re looking for what is best for you. Your post suggest you need something you can bolt on and it will be perfect for car show and cruising.

Of the 100s of carb offerings out there, I cannot tell you which one that is. If you were in my driveway right now wanting what think would be simple turn key and go out of my stash of carbs, I’d offer you my Holley 4779.

I don’t feel that I am missing the picture at all. My post is simply looking for the best possible choice for a 493 stroker being used as a cruiser. I have no knowledge of the difference between a 750 and 850 other than 100 CFM. I also am not knowledgeable about the difference between vacuum secondaries and mechanical. This is why I belong to this forum and get great knowledge.

 

[koosh]

How a carburetor works is not of opinion.

You like vacuum carbs, that’s great. Just be accurate if you’re making statements about carbs that you aren’t using.

If you want to try a double pump 850 or 950, I’ll get you one of each to try. If you’re at Carlisle, I’ll bring them for you to take back. Try them and you can report out on what you’re impressions are. Seriously.

Never mentioned I like vacuum secondaries only looking for what is best for my application. I am nowhere near Carlisle so that is out of the question however, I do appreciate the offer.

 

[koosh]

To the OP. Kinda think you’re missing the picture here. A 2bbl carb can work. So can a 1050 Dominator. What I think you’re missing is that you’re not looking for what is the best (what ever that means) for your motor, you’re looking for what is best for you. Your post suggest you need something you can bolt on and it will be perfect for car show and cruising.

Of the 100s of carb offerings out there, I cannot tell you which one that is. If you were in my driveway right now wanting what think would be simple turn key and go out of my stash of carbs, I’d offer you my Holley 4779.

I appreciate the offer, but I have no clue. Even what a holly 4779 is….however I will research it.

 

[BSB67]

Never mentioned I like vacuum secondaries only looking for what is best for my application. I am nowhere near Carlisle so that is out of the question however, I do appreciate the offer.

It was to KD, not you

 

[koosh]

It was to KD, not you

It was to KD, not you

Ahhh…. Understood

 

[Kern Dog]

It was to KD, not you

I always appreciate your input, especially when you respond to a topic of mine.
I admit that I have almost no experience with mechanical secondary carburetors. I’ve never had a dedicated race car where (in my opinion) they are a better fit.
I do agree with Rick Ehrenberg on a few things. He does not like double pumpers for street cars.
Heck, maybe my car would run stronger with a double pumper but my air-fuel readings are exactly where they should be right now so I’m sticking with what works.
Cheers.

 

[BSB67]

I always appreciate your input, especially when you respond to a topic of mine.
I admit that I have almost no experience with mechanical secondary carburetors. I’ve never had a dedicated race car where (in my opinion) they are a better fit.
I do agree with Rick Ehrenberg on a few things. He does not like double pumpers for street cars.
Heck, maybe my car would run stronger with a double pumper but my air-fuel readings are exactly where they should be right now so I’m sticking with what works.
Cheers.

Seriously, you going to Carlisle, I’ll bring you a couple to try. I guess the airport could be a thing.

I’ll send them to you too.

 

[Kern Dog]

I am not going this year. Last year took a bite out of the budget! Cross country travel, hotel, car rental and paying for our dogs at the kennel....
Thank you for the offer though. It is a generous gesture.

 

[33 IMP]

I appreciate the offer, but I have no clue. Even what a holly 4779 is….however I will research it.

4779 is a 750 double pumper mechanical secondary. Depends on the suffix after the list number to get an idea how new it is. There is a date code too, but you have to guess which decade.
I've got a 4781 (850dp) with a -3 list, and another so old it doesn't have a dash.

 

[33 IMP]

Ahhh….ok thanks

Some people confuse the fact that some holley-style carbs have double fuel inlets. This does NOT mean they are double pumper.
A dp has an accelerator pump under both bowls. A vs carb has a vacuum pot on the passengers side, and two fuel inlets (usually) but only an accelerator pump on the primary bowl.

 

[forphorty]

Mechanical secondaries will push more fuel through the engine, something you neither want nor need for a "cruiser".

Nope. Disagree

 

[forphorty]

Uhhh, secondary squirters DO push something. What isn't needed or used ends up in the oil, the cylinder walls, the exhaust stream, the air we breathe...

Uhhh, secondary squirters DO push something. What isn't needed or used ends up in the oil, the cylinder walls, the exhaust stream, the air we breathe...

Nonsense

 

[Kern Dog]

Disagree all you want.

 

[Geoff 2]

All carbs work on vacuum. AVS carbs are NOT vacuum secondary operated, post #44. AVS carbs have mechanically operated secondaries. As do AFB, Carter WCFB, TQ, QJ & Holley double pumper carbs. All these carbs have one thing in common: the sec t/blades are opened from a link that is connected to the primary t/shaft. With a vac sec carb, like a Holley, there is no link between the pri & sec shafts. The vac diaphragm has vac applied to it, is connected to the sec t/shaft, which opens the sec blades.

 

[theman440]

1050 Dominator