F-BIRD'88

New Dual Quad intake for Vortec heads. Very Kool.

Stekman

I may want to look into this!! Thanks for the heads up F-BIRD.

Not a bad price either, ~$250 from Summit.

F-BIRD'88

Would be cool with a pair of 500cfm Edelbrocks. It's on my wish list.

Stekman

Yup, just need to figure out something to do about the air cleaner and hood clearance. I think i hear cowl induction (or other form of hood that increases air cleaner space) calling out.

Air_Adam

Even better with a pair of 600 Holley DPs

F-BIRD'88

The carb flange pad(s) are actually lower than a performer manifold. A good 1.5" lower than a performer rpm. So could be fitted under the stock hood with the right air cleaner.

You'd have some trouble fitting Holley carbs to this manifold.
Not enough space between the two carb flanges.
A dual plane manifold doesn't allow for mounting the carbs sideways like on a tunnel ram.

TA5LiterHO

Have you seen this new setup? This is very expensive but I thought it was pretty cool. Barry Grant
http://www.jegs.com/cgi-bin/ncommerc...26&prmenbr=361

RB83L69

That thing looks like a typical street rod piece..... designed to support as many square inches of chrome as possible. Performance wise, it looks like the dung. Especially since you'd be stuck with those Carter carbs.

But hey, look at the bright side: maybe 2 Pro-Flow "triangle of death" air restrictors will fit on it.

As a racer, you should know the old truism:

"Chrome don't bring the money home".

F-BIRD'88

Yes Very cool. Looks like a real weapon of an induction system. The only thing holding me back is the $price$.

This is a "hi rise manifold" so under hood clearance may be a challenge. Wonder if the carb spacing is the same as the old 427/400-435HP corvette tri power setup. Could use/ adapt the tripower aircleaner for use with this.

F-BIRD'88

427Tripower

F-BIRD'88

Funny..... To me the manifold runner and plenum layout looks a lot like a Weiand Stealth dual plane. Except with dual carbs.
Looks like a good compromise for street performance/ under hood fit with easy 400+ hp potential and tons of broad range torque from off idle to 6000rpm. (Like a Stealth)
Of course u'd have to jack it up and slide a 400+HP motor under it. Got one of those? I do.
Visually, almost as impressive as a 6-71 blower, for a fraction of the $$$. I was thinking of more like a trick 1off Carbon Fiber low profile custom dual quad air cleaner simular to the old dual quad Chrysler 426 HEMI setup.
Uhh.... you remember those eh? twin Carter carbs and all.

My Edelbrock (carter) carb has been more dependable, hassle free
than any carb I've ever owned. Throttle response and power are exellent. Actually makes a little more power than my holley. Don't know where yu get off dissing these carbs. The other day it ate a bit of dirt in the fuel (old gas from the car sitting for almost a year) and got the hic-cups. Was able to completely field strip it without removing it or spilling a drop of fuel, Blow it out, fix the problem in about 20 minutes. No gaskets ruined or rebuild kit required. try that with a typical holley/ Demon carb.

One of the best $200 I've spent.

RB83L69

So, the carb flange is lower than a Performer, which is about the same as a stock one. Which means that the ports are either real small, or have a 90° at the end, or both. And the "plenum" is obviously as shallow as the shallow side on a stock 4-barrel intake besides.

Looking at that design, I see about 300-325 HP at best, in other words, comparable to one of the better (but not the best) stock intakes. I would not put it on my 400+ HP motor that I have laying around waiting for the right moment.

Turn the logic around the other way. We're talking about bolting up 1000 CFM of carb here. It takes...... how many RPMs to consume that much air on a 350? or even a 400? And those ports, on a dual plane intake, with a shallower-than-stock plenum, are going to support that???

You of all people should know better. That's not a go-fast piece, it's a street-rod "looky here at all the chrome I got" piece.

I don't have anything against the Edelbrock carbs; I just don't find them superior in any way to anything else, but rather hopelesly crude and outdated. Reasonably safe and reliable once their installation issues (like their stupid fuel line arrangement) are worked out, but that's about it. I've just been dealing with those old Carter AFB and AVS carbs for about as long as I can remember working on cars, and never having a single one that really impressed me. The last one I rebuilt just FYI was on about a 71 Century inboard with a Chrysler 360, and I even recently installed one (an Edlebrock labelled one no less) on a Dodge truck with some kind of a small block in it. They're a Stone Age design, is all: with a weight to control the secondary air valve. Come on. Even Rochester did away with their WCFB weight-controlled 4-barrel at the end of the 50s. Sure they work OK, and dump gas and stuff; but they're not the most economical, or the most powerful, or have the best driveability, compared to their competition. About the only advantage they have compared to an old stock carb, is that they're at least new castings.

But far be it from me to let performance interfere with being "visually impressive", on somebody else's car, that I'm not spending the money to build.

F-BIRD'88

Remember a carb is rated for flow at WOT @ 1.5" manifold vacuum. A Hi perf street/strip motor (with the right size carb) will show about .5" to .75" manifold vacuum at WOT and max rpm.
Not 1.5". (if the motor shows 1.5" vacuum @ WOT you need a larger carb for best performance.)
A 1000cfm rated carb@1.5" will flow right about 707 cfm @ .75" manifold vacuum.

Take your generic holley carb size formula and plug in the numbers 406CID x 6000 rpm /3456 = 704cfm.

This is not too much carb for this motor especially with a divided plenum dual plane intake and So called "stone age" auto-secondary control.

Sallee Chevrolet sells a Nastalgia ZZ4 350 with this intake setup and makes 375 hp with a very mild cam.
easy 400-425 HP and tons of torque on my motor.

Yes this is a Low rise manifold (so is a Stealth) and won't make as much ultimate peak power potential as a Vic JR or Performer RPM. But on a "Torque motor" like my 400 it will run right with it. Don't mistake this intake for a stocker. They work real well. The low rise design leaves lots of room under hood for dual Cheater NOS plates, a big plus for my plans. 600+ streetable HP all under the hood is nothing to snear at.
Not every motor combo needs a Vic JR and a 750DP holley, especially on the street.

When properly dialed in this combo will get way better mileage than a holley. gonna sound like a freight train too when all eight barrels open up on ya.....

check this out