Three Duece intake setup. - Chevy Nova Forum
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Old 10th-July-2007, 03:38 PM   #1
70SS350
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Three Duece intake setup.

Hi all, just curious. I was at a local car show last saturday night and I saw this wicked rod with a 3 duece carb setup, not sure if they were 250's, 350's, or 450's, but It looked wicked with a chrome stack atop each one. I'm thinking about maybe trying this setup, and the only reason is for the nostalgic look because I surely wont gain any power over my torker 2 and 650 4 barrel. I'd like to know how significant the power loss would be if I went to that setup, I know the manifold that edelbrock offers doesn't look any higher than my stock cast iron one. Would it be worth it to try this setup and fabricate 3 1 inch throttle body spacers out of aluminum, the operating range of the manifold says idle to 5500, my cam goes from 2500-6200, would the spacers help the higher rpm a little?

-Ryan
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Old 10th-July-2007, 06:30 PM   #2
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If you like it run it. and dont worry about HP. trips, 3X2, Sixpack, 3 duces are a show piece.. I ran the 69 400 HP 427 3X2 on a 468 in a 67 chevelle it was just for the cool factor.
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Old 10th-July-2007, 06:38 PM   #3
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How did the 468 perform with that setup vs a single 4 barrel?
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Old 10th-July-2007, 06:47 PM   #4
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fine just remember it ran out of breathing room @ 5500. switch to a 850 and Team "G" later on and brother hang on from 4000 to 7500! day and night differance. I sold the 3X2 cause of inflation. I only had 500 in it all new some 25 years ago. I sold it 2 years ago for 2500.00


Bottom end with the 3X2 was very strong but lacked the upper mid range and top end of the 360* intake

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Old 10th-July-2007, 06:48 PM   #5
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Multi-carb set-ups may require more tuning and maintenance but they are more than just show. They go too, perhaps not as much as a single Holley 4bbl on a modern intake or a fuel injection set-up but they aren't merely "showpieces". Back in the "days", multi-carb set-ups ruled the street and strip.

This set-up flows over 800 cfm and also has the "afterburner" if you choose to use it (which was the precursor to a nitrous system). It's "old-school" by today's standards but it still performs decent and definitely looks super-cool.

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Old 10th-July-2007, 06:55 PM   #6
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Thats a wicked looking setup! My motor is a 355 SBC, double hump 62.8cc heads, port matched and ported by myself, 1.94 int/1.60 exh, comp cams XE .490/.490, .230/.236 duration @ .050, flat tops, torker 2 with 650 holley, longtube headers etc... This car is definately not a showpiece, theres gotta be a way to make that manifold breath up to 6000, would carb spacers help?

By the way, is that a small block setup? What did that setup come off of, and would you consider selling it?

Last edited by 70SS350; 10th-July-2007 at 07:41 PM.
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Old 10th-July-2007, 08:23 PM   #7
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Tri powers rock According to the tach mine redlines at 6500
Centre carb is a 350 and the end guys are 466's, that's 1282 cfm at WOT
At WOT howls twice as much as a Quady. If your into expensive high maintenance chick's...........this setups for you

My puser, It could do with some TLC, I've drove it twice in the last two years and done 3000 miles in the last five years


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Old 10th-July-2007, 09:05 PM   #8
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I had six two's on a blueprinted 327/339ci and it screamed. It also made a deep roar like nothing else. I had a local town police stop me just to ask where this noise came from. When I popped the hood and he saw the six chrome pots he just leaned back with wide eyes and said: "Oh!"
I can still see his reaction.

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Old 10th-July-2007, 10:36 PM   #9
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Quote:
Originally Posted by 70SS350 View Post
Thats a wicked looking setup! This car is definately not a showpiece, theres gotta be a way to make that manifold breath up to 6000, would carb spacers help?

By the way, is that a small block setup? What did that setup come off of, and would you consider selling it?
That is the imfamous Man-A-Fre four deuce set-up for small block chevy. I just finished restoring it. It has four Rochester 2G 2bbls. It is the exact set-up John Milner used on his 1932 Deuce Coupe in the film "American Graffiti" and is very rare. It is worth around $6,000 in the condition this one is in. I'm not planning on selling it.
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Old 10th-July-2007, 11:10 PM   #10
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Very cool. I'm just looking around for alternatives to the edelbrock status-quo.
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