Carburator Intake Manifold ?

[Old~Mobile3.4]

Did somebody know if a Carburator Intake Manifold exist for the:

Twin Dual DOHC 3.4L V6?

Ex.: Edelbrock , Holley or ...

Tanks for comments !

[firechiken]

RE: Carburator Intake Manifold ?

No, I don't think so, but why would you want to do that in the first place?

[Dave96z34]

The one reason that I can see changing to a carb is if you had a custom built super charger adapter for a Weiand type If your had a m90 or m112 I would stick with fuel injection.

[firechiken]

Yeah, that would be a reason to switch to carb, but a 4v intake wouldn't help you with that.

[OldSkoolGP]

There's one other good reason, and that's if you're racing. Carburated is the way to go when you off-road or wheel to wheel race, because it's one less electronic thing that can fail. That's why even today NASCAR is still running carbs on their race engines.

[firechiken]

From the looks of that car, I don't think he'll be taking it racing anytime soon. Not talking s**t, just doesn't look like that's what he has in mind.

[perfimage]

Not to start a great big pissing contest, but one reason for carbureted engines is throttle response. EFI engines traditionally have slower response, especially off the line from idle or with immediate WOT conditions because of the lag (for lack of a better way to put it) between large changes in throttle input and fuel delivery response.

The EFI units have to recalculate and make adjustments which take time. Carbureted engines receive the necessary additional fuel AS the throttle input is occurring via accelerator pump(s) in the carburetor. There is also INSTANT response for additional fuel needed at acceleration via the mechanical vacuum operated power valve.

The above assumes the carburetor and engine are PROPERLY tuned and adjusted. Too much or too little pump shot, an improper power valve(or setting), incorrectly adjusted floats, and/or incorrect jetting will certainly kill the possible gains. Because adjusting carburetors PERFECTLY is all but a "black art", we have accepted FI as performing better when in fact, the only real gain is in the fuel efficiency.

As far as Oldskools theory....That is certainly not the reason. The real reason is more likely the keep all electronics out of the vehicle and therefore costs down. Just think of all the other sub systems (traction control, electronic shifting, ABS brake systems, electronically adjustable suspension, etc.) that could be introduced into a racecar by allowing EFI units in the vehicle, then just think of the $$ teams would spend to do so and how difficult it could be to detect these systems if the sanctioning body prohibits them.

Again, I am not trying to start a pissing contest, but I certainly had to put my 2 cents worth into this one.

RED

[Doubt_Incarnate]

you could maybe replace your throttle body with a sidedraft carb. it would take a little work, and probly have to fab up a new"intake arm" to bring it around to the right position and orientation. but still possible. or even more venturous, providing there is space, you could maybe cut the back of the plenum off and put a couple of sidedrafts there, or maybe just get rid of the upper plenum all together and fabricate a 6 pack type manifold to bolt to the lower intake. plate steel or aluminum, tubing of whatever you pick and some time.

[Anonymous]

Because adjusting carburetors PERFECTLY is all but a "black art", we have accepted FI as performing better when in fact, the only real gain is in the fuel efficiency.

Fuel Injection gains a lot more than just fuel efficiency, including more power, better tuning abilities, and they can self-adjust.

[Dave96z34]

Because adjusting carburetors PERFECTLY is all but a "black art", we have accepted FI as performing better when in fact, the only real gain is in the fuel efficiency.

Fuel Injection gains a lot more than just fuel efficiency, including more power, better tuning abilities, and they can self-adjust.

Yup your right it does and you will see fuel injection in nascar in like 5 years.