Ok. So I've been searching the nets and I just can't seem to find what I'm after. I'm looking for a velocity stack for a 4 barrel, and I see jegs and speedway and all the rest sell the same 8 3/4 diameter one. I'm looking for one that's a little bigger, like maybe 12in or 14in. Oh and the style I'm after is the one with the mesh top, not a small air filter. I figured if anyone would know, the H.A.M.B. would know!
You'd be surprised how air flows thru these when you open the bottom of one. Restaurant supply store.
I have a couple of OLD aluminum "salad bowels" I picked up in a second hand store to make velocity stacks out of. I say old, because anything new these days, is plastic or thin stainless steel; plastic does't hold up, and it's hard to form stainless steel to fit a carburetor. The aluminum is fairly easy to work with, it's soft and easily shapes to fit the top of a carburetor, and they were CHEAP. Just don't raid your wife's kitchen for anything. I am Butch/56sedandelivery.
Yup, not that easy to find, but you could potentially make one. Pic snagged from the net: The salad bowl was a dyno sensation as tested on Engine Masters show on Motor Trend On Demand. I think it really woke some people up on the way air prefers to flow into a carb. It was a great episode.
the salad bowl did ok, but the normal velocity stack was better.... think about what the air has to do to get into the carb, it makes sense. Air doesn't like to go around corners, it likes to go mostly straight. The normal velocity stack straightens it out. The salad bowl doesn't really.
YES!!!! The fly eye!!! I did not know that's what it's called. If I had known i would have been able to find it. Thanx guys!
Man, I remember a friends Fairlane catching on fire with one of these breathers, the gas soaked foam element burst into flames and did a lot of damage to the hood, carburator and wires before he got the fire out, he was lucky someone came to his aid with a fire extinguisher. HRP
Anything with that top is called "flying eye" motion, edelbrock or the modern velocity stack ones. I have a motion myself, that you can see sitting on the big block and a couple of the edelbrock's that are good for keeping stones out at the track.
I was at a scrap metal yard and they had a bunch of industrial aluminum spot lights. The velocity stack came to my mind's eye back then. They were huge . Make your car look like one of those hot wheels cars of old.
http://racerxfabrication.com/velocity-stacks/formed If you would like a quote or have questions for custom velocity stacks, or velocity stacks in general feel free to send an email to [email protected] and we would be happy to help and answer any questions that you might have with your project.
Your best bet is to buy a K&N type lid and trim it to fit, or buy the 11 inch one and make a ring to take up the gap.
window A/C filter https://www.lowes.com/pd/Frost-King...MIvoO6w7CF3gIVSb7ACh1zXQcgEAQYASABEgLJ-_D_BwE
I have also had this problem, but wanted to let everyone know that I will be making a prototype velocity stack to fit on a 4150 carburetor for my UMP Dirt Modified. I will be making it out of .090 aluminum sheet by cutting out a truncated cone and welding it up with a 1" flat ring on top with a flat sheet running 90 degrees from the ring on down to inside the truncated cone. This will be designed to use the K&N xstream air filter only. A 4" high stack will have a 45 degree angle down to the carb. If it holds up all season, at the end, I'll put it on the dyno and release the results from my old filter to the new prototype. If all goes well, i will begin selling these next fall.
A little different, but I wanted decent ram tubes for my triple Aussie BXOV Stromberg carbs (65mm diameter airhorn). Lots of different stacks out there, but none with a fully rolled lip to improve flow (3% better flow for a 180-degree rolled edge, 5% for a 270-degree rolled edge). I ended up using turbo inlet scoops (from evilBay), cut down to size. Needs filtration on the street, so used some mesh from my local autoparts store and some speedway slip-on oiled foam filters. Perhaps could take the top section for the 4-barrel. May not work given the throat size you are looking for, but food for thought. Cheers, Harv
Wow I didn't know a velocity stack was that big a horsepower maker. You really must have that combo dialed in!! Lippy
Those old mesh top units whether round or triangular were notorious for catching fire, and burning up hoods, and engines! The foam was flammable, and if you ever had a backfire through the carb they'd ignite.
Those lid air cleaners are suppose to really slow air flow down... They claim the Mopar bell style air cleaner is best with a 14 x 4 air cleaner..
The Jalopy Journal
