Weber 8-Stack V8 Systems

Each assembly is custom-built, shipped fully assembled, and ready-to-run.

The photos on this site show some of the units built here. I've tried to include at least one image for each type of unit, and as many photos as possible of the various options. They by no means represent everything available.

Each assembly reflects a painstaking approach to detail. Every carburetor has been completely disassembled, prepared, and internally tailored to order. Some of the customized systems take 2-3 days to build. No shortcuts are ever taken.

Every one is shipped 100% complete and ready to start, with nothing else to buy. Each unit includes a set of stainless intake bolts, an intake gasket set, low-pressure fuel regulator mounted on the unit with a liquid-filled stainless pressure gauge, complete braided s.s. aircraft-quality fuel harness, and a nicely photographed, simple-to-follow instruction manual that guides you through the entire installation and setup procedure. The manual specifically is written for a person who has never done this before, so if you can read English and follow basic instructions, you will find this coinversion to be pretty simple.

Here are two videos that show you our Weber-carburetion systems running. These videos were unsolicited and not produced by us. They were posted by engine shops after installing our product. The first one is a Weber-carbureted engine startup on a test stand by Power Hungry Performance. This video showcases the throttle response of Weber carburetion better than any I've ever seen.

https://www.youtube.com/watch?v=tE7lokNDfhE

This second video was posted by Ken Ellison at Ellison's Machine in Glen Burnie, MD featuring a 525hp 289 Cobra engine being run on the stand.

https://www.youtube.com/watch?v=Zp-svqQbPvc

I extend my special thanks and appreciation to both of these gentlemen for their generous unsolicited endorsement of our work. That kind of advertising is the best I could ever wish for.

Ordering

Please call to place your order by telephone. All the details of our ordering process can be found on the CONTACT page of this website and should answer all your questions.

Classic Weber Independent-runner 8-stack V8 systems

Base Smallblock Ford

Shown as shipped, with chromed velocity stacks, complete braided fuel lines, and pressure regulator, which can be mounted on the unit (as shown) or it can be mounted by you where you like it. Specify 289-302 or 351W manifold.
Height is 10-7/8", but can be 1" shorter with shorty stacks.

Base 390/427/428 Ford FE

Shown with optional 10-degee angle cut manifold and debris screens fitted inside stacks.

Base Smallblock Ford 289 unit on Cobra replica intake manifold

This 1965-style replica COBRA-lettered intake system comes with the COBRA-lettered front water manifold and pre-cut connecting hoses. This manifold uses a unique center-shaft linkage system for compatibility with the original Cobra factory foot pedal linkage. Replica owners may order optional foot pedal linkage kit that is an exact copy of the original linkage from the footbox to carburetors. Height is 10-3/4" (add 3/4" for filters).

Our Smallblock Chevy 4x48IDA

After the SBC manifolds went out of production in 2021, the industry was without them for a while. Our SBC Weber 4x48IDA carburetion system is available today on a completely new manifold. The assembly pictured here shows our standard base SBC 4x48IDA unit with 4-1/2" stacks, which are a no-cost option. With stock Weber 2-1/4" stacks, the height is 12-3/16" (add 3/4" for filters). If you have a 200 /700R4 transmission, we also offer this assembly with an optional dual cable linkage to accommodate both the throttle and TV cables.

Ford 351 Cleveland available in IDF and IDA versions

Our 351 Cleveland assembly is available with 48IDF carburetors on a small-port intake manifold for increased velocity of the incoming charge. These manifolds can be ported to match the Cleveland 4-barrel heads, but they work extremely well on the street with the smaller intake ports. Shown here is the base 351C 48IDF Weber assembly with a side-mounted bellcrank assembly we added for this customer's throttle setup.

The 351C also comes in the 4x48IDA version shown here. This is a thoroughly updated manifold with a vacuum plenum for power accessories and can be ordered in either 2V, 3V, or 4V port configuration. This photo shows the front view of a Group IV competition Pantera assembly with our pressure regulator and cable bracket mounted at the front.

The "All Black" look

Occasionally, someone wants their entire assembly done in gloss black. Here's a BBC triple-black assembly we made for a customer on a vintage 60's-era Sharp manifold. These manifolds are no longer available, but all-black looks pretty cool and we can do it on any of our standard production units. This one has special black anodized aluminum stacks with black fuel hoses & fittings to take the all-black look over the top. We left the linkage and oil fill cap in clear aluminum for a touch of contrast.

Smallblock Chevy IDF

Weber 4x44IDF assemblies are no longer available. These manifolds have gone out of production for smallblock and bigblock. We'll fill this spot with something else shortly.

Base Bigblock Chevy IDF Series

The Bigblock Chevrolet IDF system is shown here exactly as shipped without any special finishes. The IDF system fits oval port heads only.

Base Smallblock Ford IDF Series

The IDF units are both compact and extremely versatile, offering you the choice of 44mm or 48mm carburetors. The smallblock Ford 4x48IDF unit is shown here, as shipped, in standard form with no options. The Weber 48IDF packs the same punch as the 48IDA, but in a more "squatty" package. These are excellent for low hood clearance applications.

Crossrams: The most exotic of all Weber carburetion systems

Smallblock Chevy

The crossram comes standard with 45DCOE carburetors for maximum streetability, but can be ordered with 48mm DCO's. The Chevy crossram is 11" tall to the top of the fuel pressure gauge as you see it here. If the pressure gauge is relocated, the unit is only 9-3/4" tall, so it does not require much hood clearance (the SBC 48IDA downdraft system is 12-3/16" tall). These units are activated in the center with a bellcrank designed for a cable-operated gas pedal. We do offer this unit with a special linkage system compatible with stock '63-'67 Corvette gas pedal and throttle linkage, using a secondary bellcrank assembly on the driver's side.

Custom manifolds

Working with Hogan's Racing Manifolds, we can create a Weber carburetion system for any application. Shown here is a bigblock Chevy crossram assembly on a custom-made Hogan's manifold.

You can check Hogan's out at https://www.hogansracingmanifolds.com/

Our FOR SALE page

From time to time, we offer assemblies on our FOR SALE page. Click on the dropdown link under "8-Stack Systems" above, and check out what might be available.

Going vintage racing? Reproduction 58DSF downdrafts are coming soon.

We'll be releasing a faithful reproduction of the original Weber 58mm DSF shortly, with the scheduled ETA of mid September. If you have a vintage race car that needs all the CFM it can get, these period-correct 58mm reproductions will far exceed the horsepower capability of Weber 48IDA's. We don't recommend them for street use, but for developing the highest possible horsepower on a vintage race car engine, these carburetors are the ultimate.

Supplying vacuum for transmission, air conditioning, power brakes, or PCV

Some cars require vacuum for accessories or to connect a PCV hose.

The 8-port vacuum kits are generally hidden on all the downdraft units, and all you'll see are fittings at the rear of the manifold as shown here. Vacuum is supplied from all eight ports.

The one at left has two 3/8" nipples, one for PCV, and the other for power brakes.

If you reqwuire vacuum, please be sure to order this option (cost is $175) when you place your order. It is much more difficult to install once the unit is assembled. In some cases, it CANNOT be installed later, because not every manifold is designed for hidden vacuum. The right manifold must be ordered in the beginning.

Protective options

Debris Screens for 48IDA

Debris Screens for 45DCOE

Oval filters for Weber 48 IDA...4 filters for 4 carburetors

Individual stack filters for 48IDA

Mesh Filters for all DCOE's

Protective covers

Available for all Weber models with standard factory velocity stacks.