My car is getting built as I speak at a shop right now, and I'm debating if I should cut my hood and get a carburetor scoop, does it make a difference in performance ? Does it really give the carburetor more air forced down to the intake ? Or is it mostly just for looks ?
Carburetor scoops do they make a difference?
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1970Duster
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Yes it does but it depends on the scoop and how you do it.
68dodge
Well-Known Member
I would say they work pretty good. It helps so your carb is not taking the hot air from the engine compartment.
Ok but the thing is that Im not going to put a hood scoop on
My hood, I'm going to cut a hole in the hood so be carburetor can stick out and I will put what is called a carburetor scoop, you know those air blower things that mount on top of the carburetor with the butterfly flaps ? Well I want to put that on my carb but want to know if it will make a difference or are those things just for looks because jegs sells them for like 300 bucks
My hood, I'm going to cut a hole in the hood so be carburetor can stick out and I will put what is called a carburetor scoop, you know those air blower things that mount on top of the carburetor with the butterfly flaps ? Well I want to put that on my carb but want to know if it will make a difference or are those things just for looks because jegs sells them for like 300 bucks
green1
Well-Known Member
Nothing but turbulent air into the carb, messing with carb's internal signals.
daredevil
Well-Known Member
Unless you get the one with a filter inside its just for looks.
bkbond12
Old ones need lovin too..
It's hard to accurately measure how much of a difference it actually makes since trying to test the performance on a dyno with a scoop is difficult to impossible. You can use a blower fan, but getting an exact measurement is tough because reproducing the wind and air flow outside of using a wind tunnel is nearly impossible.
I'd say the additional performance is marginal at best and using a scoop or carb scoop is more for looks.
I'd say the additional performance is marginal at best and using a scoop or carb scoop is more for looks.
cudaspaz
Well-Known Member
I can honestly say that when I put the plate and foam seal to make my hemi scoop functional I felt likemI gained an extra 25 horsepower.
I have non coated headman headers so they throw off some heat but the carb seems to be real happy with what I did.
I have also driven it in torrential downpours sucking in water like crazy with no issues whatsoever.
I have non coated headman headers so they throw off some heat but the carb seems to be real happy with what I did.
I have also driven it in torrential downpours sucking in water like crazy with no issues whatsoever.
duster wonder
National Guard Member
look up the spectre plenum kits too.. but that defeats the purpose of a hood scoop
suckin in 200* radiator air has to hurt a bit
especially in the summer go for a drive and stick your finger in the carb, just dont yell at me for a burnt finger. haha
suckin in 200* radiator air has to hurt a bit
especially in the summer go for a drive and stick your finger in the carb, just dont yell at me for a burnt finger. haha
67Dart273
Well-Known Member
If you don't run a heater, plumb the pass side air box (cowl) fitting back through the heater motor hole and to a carb plenum
The cowl is a guaranteed high pressure area.
Some of the early "low" hood scoops were not that effective, because of boundary layer air, etc
The cowl is a guaranteed high pressure area.
Some of the early "low" hood scoops were not that effective, because of boundary layer air, etc
Mopar to ya
Well-Known Member
You are talking about velocity stacks, I assume? They help with power, no question. A hood scoop does not much more than look real good and help bring cold air into the motor. Kind of like the cold air intakes the rice grinders use. Cars run better on colder, denser air. If you want more air forced down the intake, get a proper scoop with a ram air kit, or supercharge it.
Mopar to ya
Well-Known Member
I hate you Cudaspaz! I have been tossing that idea around for a month or so. That looks awesome, and it's functional as well. I love it!
805moparkid
Slant and AFX Guy
a bug catcher is cool looking but dose not belong on your setup...
either duct some tubing for a flat hood cold air system or get a scoop and do a plate system...
and i dont care what anybody tells you you can never run to big of an air cleaner... even with that 4" filter i have resistance and pick up time without it...
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either duct some tubing for a flat hood cold air system or get a scoop and do a plate system...
and i dont care what anybody tells you you can never run to big of an air cleaner... even with that 4" filter i have resistance and pick up time without it...
View attachment 100_4569.JPG
View attachment 100_4572.JPG
Dartnut
Don't hate me because i'm beautiful
So if they don't work and are just for looks, then why do pro stock cars all have them?
I think it's more related to the design than looks.
I think it's more related to the design than looks.
Mopar to ya
Well-Known Member
Scoops or stacks? Both work, but in different ways. To make a scoop work properly, you really should seal it off and make ram air. Otherwise it is a cold air intake, which is not a bad thing either. Velocity stacks look great, but one sticking out of the hood looks a little weak, compared to 4 or 8!
View attachment velocity_stax_450.jpg
MopaR&D
Nerd Member
Check out the Mopar Chassis manual if you can get your hands on one (I got a clearance deal off Mancini), there's a whole section devoted to proper functional ram-air hood scoop design. The critical things to get right are the size of the opening (30 sq-in. minimum), distance from top of carb to bottom of scoop, and having the scoop opening raised up off the surface of the hood to bleed off the boundary layer; if you look at the later Challenger T/A or A-body dual-snorkel scoops you can see how the design changed for better airflow.
805moparkid
Slant and AFX Guy
never said they dont work... just not on his set up... being his car wont be going 200mph+ it needs more area due to lower speed...
Mopar to ya
Well-Known Member
X2. Plus, the attitude of the car is important and changes air flow. If you are jacked up a bit, that affects flow into the scoop. It would be cool to take one of our cars into a wind tunnel and see the air flow patterns.
bkbond12
Old ones need lovin too..
The design of a scoop is not as effective as everyone believes. One test in an air tunnel on a drag car showed
Now the drag car they used was roughly 1,000 HP and an increase of 24 HP is only .024%. That's marginal at best.
Granted that running a vehicle for longer periods of time will probably allow the engine to run cooler and thus run more efficiently, but overall horsepower gains from just the scoop are not going to be noticeable.
Full article can be found here
Shainesboostin
Well-Known Member
Bump this thread. I just did a Magnum swap. Got an airgap intake manifold, 4" air cleaner and a nitrous plate. Was gonna put a hole in the hood, and add a scoop...will this hurt performance?
Shainesboostin
Well-Known Member
This is the scoop mocked up, just setting on the car, was gonna rivet it on. Aircleaner would be sticking above the hood a good 1-2 inches.
famous bob
mopar misfit
if ur running a big engine u might need the scoop to run an air cleaner. my air cleaner just barely clears a six pack scoop and that`s w/ a dropped base. sucking outside air is always better than sucking hot air from a small engine compartment that has a huge engine in it, regardless of scoop design. " cudaspaz " mine looks identicle to yours w/ the exception of my base plate being round .
famous bob
mopar misfit
also, a filter and throttle body inj. won`t have a signal problem.
Shainesboostin
Well-Known Member
My car is carbed. with the plate under it the filter sticks out of the hood a good bit.
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