Carburetor choice

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texas360

texas360

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i know im gonna stir the pot with this one and probably blow it up, but i have some questions..

i have a 360 in a heavy car.. it has stock bottom, whiplash cam, aluminum heads, eddy performer intake, long tubes, rev man 904, 3;55 gears... i currently run a Edelbrock 1405(600 CFM) i have never ran anything else... i have always wanted to try a Holley in some form, but there is so many choices.. mechanical, vacuum secondary's. single or double pumper, front floats, side floats, 600-650-670-750,770 cfm, 4150/4160, traditional, brawler, quick fuel, demon... so many... i don't even know where to start in choosing a Holley to try on my car.. its just a street car.. i don't want to go to big or be too small. i would like something that's fairly easy to rebuild or tune starting out as I'm going to be learning the Holley.. what are your guys thoughts?
 
3310 Holley 750 VS is what I'd pick for you. Or any 750 VS such as a Brawler, QF, etc.
 
Holley 700 dp if they still make one.

Going to a bigger carburetor will probably only move the peak torque up about five hundred rpm. It will lose only a minut amount of low-end which you will quickly go through that RPM and into Power again before you know it so therefore it'll be almost unnoticeable .
 
A different carb probably won't help you much. A 600 in a heavy car with a 360 will work. You can buy a spring and metering rod kit to tune it into your combo.
 
I'm using a Holley Street Avenger 770 cfm . Vacuum secondaries, choke, on a balanced and blueprinted 360 Magnum. a lot of the same components you are using with a 4-speed and 3:91's. Very streetable in my climate that's low humidity, temps from 55-80 degrees during the summer months. Be interesting to hear other comments on selections.
 
AAndrews said:
I'm using a Holley Street Avenger 770 cfm . Vacuum secondaries, choke, on a balanced and blueprinted 360 Magnum. a lot of the same components you are using with a 4-speed and 3:91's. Very streetable in my climate that's low humidity, temps from 55-80 degrees during the summer months. Be interesting to hear other comments on selections.
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Should be a good one for your combination.
 
AAndrews said:
I'm using a Holley Street Avenger 770 cfm . Vacuum secondaries, choke, on a balanced and blueprinted 360 Magnum. a lot of the same components you are using with a 4-speed and 3:91's. Very streetable in my climate that's low humidity, temps from 55-80 degrees during the summer months. Be interesting to hear other comments on selections.
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man i wish it was 55-80 through summer here.. im in north central texas.. 95-110 through summer with 95-100 % humidity daily..
 
how many cc in those alloy heads?
or what is the true Compression Ratio?
which whiplash?
what stall?
What car, or what weight, and/or what tire height?
What if any, is the problem or reason for going down this road, and/or what results are you expecting?
On my 360 is a 750 Holley DP, and I love it. But it's a totally different combo from yours.
 
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750 vacuum secondary is hard to beat in a performance application. That being said I think a 650 vacuum secondary would be ideal for a heavy truck. A well tuned double pumper is a great carb but most don't tune it to it's potential.
 
AJ/FormS said:
how many cc in those alloy heads?
or what is the true Compression Ratio?
which whiplash?
what stall?
What car, or what weight, and/or what tire height?
What if any, is the problem or reason for going down this road, and/or what results are you expecting?
On my 360 is a 750 Holley DP, and I love it. But it's a totally different combo from yours.
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THIS ^^^^ THIS ^^^^ THIS ^^^^^

AJ askin the pertinent questions!

Bigger isn’t always better. Like said above, you probably gain 5-10 hp up top but possibly loose a tad of throttle response.
It’s also a bit hard to make a recommendation on just which Holley is best for any one application. However, 318willrun IMO made an excellent suggestion.

The 4160 style, 3310 model is a 750 VS carb that can be upgraded later if you want to a 4150. There easy to work on, generally pretty good OOTB, easy to tune.

You’ll need a few things to go along with it.
A Chrysler throttle adapter
Jet kit
Secondary spring kit
You can wait a bit to tune the secondary side which doesn’t use jets but a plate instead. Just unscrew it and the. Re screw in the new one. There not as Precise as the Jets, but it gets the job done. You’ll get a lot more out of tuned primaries and the proper spring to open up the secondaries at a good time in the RPM band.

I think this would be the best all around “Holley” to learn on and start with.
 
mopardude318 said:
Try a Holley Street Demon 750 with the polymer middle section.
Demon Carburetion 1904 Demon Carburetion Street Demon Carburetors | Summit Racing
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Well you beat me to it. Not only is it an economical choice compared, it is a holly Street demon... It's funny how the carburetor mixes the best of every world name and function . It's brand name is a holly and it has the word demon in it as it's a demon but it works like an Edelbrock and a thermal quad... Standalone size metering rods and primary Jets with Edelbrock step up Springs and Edelbrock accelerator pump and Holly's secondaries...
Going to work on a customer's 750 Street demon tomorrow. It's running a little rich and it was dying around corners and we found when we took it apart the factory floats were set way too low...
 
Get yourself a Holley. Get some power valves, jets, fuel bowl gaskets, accelerator pump cams, secondary springs, sure I'm forgetting a couple things, and be ready to futz with the thing more than a British motorcycle. :realcrazy:

Or, get an Ede 650 AVS2
Turn the A/F screws out 1.5 turns, and burn rubber all the way down the street. :)
 
Best bet is to call a carb builder and buy from them. You can get a custom carb pretty cheap. Buying an off the shelf carb of any brand is not the best plan.
 
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Toooooooootalllllly disagree with that one!
 
thesiren74 said:
These are truly great street carbs.have one on my old 360 in my dads 64 valiant haven't touched it in 3 yrs.
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I do hear excellent things about them. I’m not to fond of the fact that it has to come off for jet changes. Otherwise, slick looking carb with a growing good rep.
 
Hmmmmm . . . . . . .

Resized_20210424_154302_2016.jpeg
 
The 3310 is one of the most forgiving carbs out there. You can put them on a stock 318 and they run fine. You can put them on a 440 and run fine. If somebody is a little lacking in the tuning aspect, the 3310 usually gets them on the road and they are smiling. Especially if starting with a "known good" one. Great starting and idling manners. Tip in is crisp.
  • To fine tune... , power valve, jets, accelerator pump bolt and cam, secondary spring and nozzles are very very very simple and it's "the beginning of tuning a Holley". And, parts are so common to buy, support is great as well and, as always, a few old timers in your "neck of the woods" (there always are...) that can give ya a tip.
  • Holley 0-80508S 750CFM 4160 Carburetor w/Chrome Fuel Feed Line (speedwaymotors.com)
  • certainly there are other carbs that will work great as well
 
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You have the BEST brand carb on the engine already: Edelbrock/Carter.
Being a heavy car, I would put a Carter TQ on it....like the factory did.
 
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