This?

http://www.piercemanifolds.com/Catalogp ... slerhr.htm

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vm

It is always a challenge to try-out some of these ideas with-out spending a bunch of $$$... so based on the Cortez "side entry" design, I pulled-out an old aluminum 1 bbl intake I had and cut open the side.

Based on SSDan's description of a deflector plate that these manifold used, I went with 2 holes instead of one large opening... and left a contoured center "deflector", which hopefully will spread-out the incoming A/F flow from a second carb.

Now I need to sort thru my box of aluminum "bits" to see if I can make up a plenum and carb mounting base.
DD

Looks like you need to get yourself into port EFI, my friend...

I like the Offy 2X1 myself. Never had much trouble keeping it in tune.

Lou

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Home of Slant6-powered fun machines since 1988

Even if it does not work well, it will look impressive... with the 2 carbs at 90 degree angles to each other, wild stuff.

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Grandpa's 1974 Dart Custom 4 door 225 auto, Aluminum Radiator, 1920 Holley.

Yeah, those things are a PITA to tune. DCOE type carbs are meant to feed one cylinder. When they are mounted to a plenum the metering goes out the window. I'd only try it if I were a real masochist with a wideband and plenty of money for lots of jets and emulsion tubes.

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Joshua

And my wife wonders why I save all "this stuff"....
My box full of aluminum scraps did me well... some 1 1/4 x .125 wall tubing and a old cast aluminum pipe cap and I can mock-up a dual 1 bbl.
I do not have anything that has the 1 bbl crab mounting bolt pattern but I did have a 2 bbl plate... that got me thinking about making the mounting large enough to mount either carb type.

Here is what one idea looks like. (see photos below)
So far... about 4 hours of my time and $0.00 out of pocket money but now I need to "talk" my way onto a TIG machine and do a bunch of aluminum welding.
DD

Yeah! That's what I'm talkin' about!

Make sure to check for fender clearance though....

Doc, the rat rod crowd would love you!!!!

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66 Lil' Red Piggie Valiant (Mater Crusher) - Thanks Zilla!!!!! 72 Demon (Number 1 Son's)

Yep......THATS DEFINATELY COOL!!!!!!

HyperValiant

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1960 Hyper-Pac Valiant(rolling test-bed)
1963 Valiant V2OO(Son's summer project,- he just turned 15 )
1972 Valiant 4dr(Daughter Kelly's repair in progress)
1974 Valiant (v8) daughter Kelly's work in progress

How about the two barrel being the primary carb and the one barrel being the staged carb? That way the main carb gets the long runner benefit...

Looking very cool It looks like air/fuel is going shoot right down the middle runners, even with the deflectors . Maybe a small hump behind them for some turbulence. But then again I know nothing.

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<img src="http://farm4.static.flickr.com/3173/2992308402_5481afb26e_t.jpg">

That is an interesting look.

Has anyone tried the progressive 2 bbl. that came on the early 70's Mercury Capri 2.8 V6? I believe it was a Holley but I forgot the number. I don't know that it would support a 3.7 L but I would think the 170 crowd might benefit. That reminds me, 17's in the 1/4 mile then used to feel "peppy". Now we diss Mopar's 3.5 V6 for having "only" 250 HP, a number a 1993 Cobra Mustang couldn't attain.

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'63 Valiant V200 Convertible
225 Aluminum Block

Looks like a "Rube Goldberg" design if you ask me!! Wire it together with pipe cleaners and duct tape.

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'72 Duster 198 stock cam, 3:23's Hookers on jack stands for 8 years in the driveway
'79 Maxivan 360 Offy Qjet Comp RV cam/rusting in the driveway.
93 D350 160HP Cummins Auto Dually Clubcab needs a injector pump
2005 Golden Couch Buick

Doc, sorry I caught this thread too late to help. I have a Cortez manifold with a working YH carb that I'm not using at the moment. I'm not sure I want to give it up permanently because I'm afraid California law makers will decide one day that older vehicles will be subject to smog rules and I'll have to remove my Weber, but I be glad to loan it to you if you wanted to try that style.

One of our Cortez group members posted a picture of a dual carbs set-up with this manifold. Here's what it looked like:



I think your idea would work better though.

-Moose

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1966 Clark Cortez, Industrial /6

That would be the Holley 5200. It is okay for a stock slant, but the airflow is just too small for anything modified.