• When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.

2 - quads vs sixpack on '67 440 hp

sputnik 440

sputnik 440

Capt Jim
Local time
9:05 AM
Joined
Feb 16, 2016
Messages
248
Reaction score
69
Location
Norfork, AR
I never see any 440s with 2 quads on the. At least not on a 67 Plymouth Satellite. Why not? Does that not make a descent set up? Or is the 6 pack better. I'm running a 850 pro Holley right now,915 heads ported polished , headers 3" exhaust, digital ignition, 373 rear end. Am I crazy to thin that 2 - 4s would be the ticket, or, do I go with the 6 pack or stay with the po Holley.What brands and models in the intake and carbs? I could look for advise on the internet, but experience always wins out over paper tests.
 
'67 440 hp
20170907_213712.jpg
 
2 four barrels look impressive but good flowing manifolds are not available-not including tunnel rams. The tests have shown the six barrel intake to be on par with good four barrel manifolds. Use what ever makes you happy!
Mike
 
I think most 2 x 4 bbl manifolds are dated designs. If after maximum performance they probably aren't going to beat a newer developed manifold and 850 carb. But they are cool - used to know someone who had dual carters on a 440 in a 58 Desoto. They definitely will impress at open hood night at the Sonic. It may depend on if you prefer Holleys or Carters/Edelbrocks. I'm not sure if Holleys will fit on them.

If you're a dual quad guy please don't flame me - I have a Ford FE with a 427 intake and dual Holleys and I wouldn't put anything else on top of it.
 
I thought that Edelbrock offered a decent duel 4 RB intake? Look up "Old Reliable" on the internet...
 
493 Mike said:
2 four barrels look impressive but good flowing manifolds are not available-not including tunnel rams. The tests have shown the six barrel intake to be on par with good four barrel manifolds. Use what ever makes you happy!
Mike
Click to expand...
tunnel rams move air and make good power.
 
the ch28 set-up I use is by far the best driving and easiest to tune performance intake I've used on a big block. I think the 6bbl can make a little more power but at twice the cost and the associated tuning issues for those who are not carb savy. tunnel rams are the ultimate power.
 
Last edited:
I have a dual quad setup on my 392 hemi that is similar to CH28 I have progressive linkage and it has good street manners. A lot of performance is how much cfm can you actually flow so what your cam, compression, trans, and axel ratio can handle go for it. It has better street manners with progressive linkage. 6 pack or dual quads do look good on an engine.

View attachment 524600

IM000812.JPG
 
I ran 6 Paks, Tarantula's, & tunnel rams on my drag motors. With some tuning effort the 6 Pak's worked great after I figured out the end carb idle mixture screws, the Tarantula's with an 850 DP worked great with lots of shooter & shooter cam tuning effort, Weiand tunnel ram with 2 650 DP's worked really well with very minimal carb tuning.
 
I have duals on my Charger. There are a few items left to finish up then we can start it up!
20171008_081938.jpg
 
How about webers,never seen anyone try this. Hood clearance is an issue even with short stacks been doing some research on this set up.


dodge3.jpg 534250_3850094125847_1083052874_33507149_1501736811_n.jpg dodge2.jpg
 
MOPOWER871 said:
just check your hood clearance, this manifold looks similar to the performer RPM in height, I had run an offenhauser dual quad with two 600 cfm carters worked great. I run an performer RPM dual plane single carb on my 67 GTX and have to run a drop base air cleaner http://www.edelbrock.com/automotive/mc/manifolds/chrysler/dual-quad-bb.shtml
Click to expand...
thanks to all for the advise, it helps. Mopower 71, yes, I am aware of space issue. I may have a choice I will have to make. Stay with the Pro holley 850 dp and keep it under the original hood, or I may have to use my other hood and put an air grabber on it and paint it all black. I do not wish to do the latter, and it may preclude me from going the 2 by 4 route, or for that matter, a six pack route. I run a dominator intake with the 850 and a drop base air cleaner and it is tight. I really don't want to run a tunnel ram, it would sit out of the hood too far. What is everyones impression of this set up? This sounds like Mopower's.

OFFENHAUSER ALUMINUM 2x4 BARREL INTAKE WITH 2 HOLLEY 600CFM TUNED CARBURETORS, CAME OFF OF A 500HP MOPAR 440 . READY TO INSTALL COMES WITH MOUNTING BOLTS, RETURN SPRINGS, BRACKETS, ACCELERATOR CABLE, THRODLE LINGAGE, FUEL FILTER, MUST USE GASKETS THAT BLOCK OFF EXHAUST PASSAGE WITH THIS MANAFOLD!
offy with 600 Hollys.jpg
 


heres a NON Mopar comparison of 2 x 4 VS 3 duce.

that being said, the six pack looks kinda cool, works pretty good. but the CH 28 properly tuned should smoke a six pack.
 
6 pack versus 2X4, which one being "better" ?
as in how do you mean better ?

What I am getting here.... is the Engine capable of using the extra airflow ?
If not, IMO, a waste of time for "appearances" sake.
Remember that typically "better" flowing can at times be reduced port velocities/Torque and driving characteristics ?
 
Maybe someone can comment on whether this set up would work for the 2 x 4s. I know the 6 pack would work, but I keep going back to the early days when the only thing that had a 6 pack was a "goat". I hate "goats" (gm). Nothing like a 426 wedge with dual 4s. Anyway, '67 440 with 2500 miles, .040 over, 915 heads, ported and polished (don't know the volume increase), larger valves (told so, not verified), 850 dp Pro holley, Dominator intake, MSD, Comp Cam extreme roller rockers, springs, hydr lifters, pushrods, lift on cam .491,cold air intake (300 miles) ,2" hookers, 3" exhaust, 373 rear end. 4 speed
Does that layout give anyone a direction I might go. I don't have to get rid of the 850 dp, but it is sensitive to tuning and low idle vs dieseling. Might have a worse time with the 2X4s, I feel sure I will with the 6 pack.
Any comments on the photo in my earlier post? This not run on the strip, love the midrange and don't want to load up in town.
"Mopower", look familiar?
 
Last edited:
If you raced, I'd say stick with the 850 dp (might even run a 750 vac sec if automatic). If you are looking for the cool factor & have hood clearance issues, I'd vote for a stock RB 2x4 intake with some mild port work and smaller carbs like 500cfm Carters
 
I installed a new OOTB six pack intake and carbs on my 440, expecting tuning issues and guess what? It ran great from the very start. And I live at 5400 feet MSL. I did have a problem with a needle and seat not seating on the rear carb, after about 10 miles. I put in a used one off a 4 barrel and have had no issues of any kind since! Must be because they sat in a guys basement for 10 years before I bought the set up. This thing breaks the tires loose in 2nd gear when the end carbs open! Chrysler really knew what they were doing when they developed this set up. Nice thing is that you run around on the center carb until you need the extra power. A dual quad runs around on 4 barrels.
 
Sputnik, I am presently running a Weiand tunnel ram w/ two 750 eddies, only a blower is cooler to look at, and only a blower will make more power than a tunnel ram, this is the third 440 I have had that I have had a TR on. this motor is a 509 w/ a .590 PS cam(old) all the tuning consisted of putting larger jets in the secondaries, went from .118's to .135's, wala done deal!!!! If you decide to try one you will never go back to anything else!! Dave.
 
You must log in or register to reply here.

Similar threads

65 Dartman
FOR SALE Big Block 915 Heads
Replies
3
Views
695
4mulas
4mulas
D
440 timing and pinging
2
Replies
35
Views
6K
PlymouthMakesIt
PlymouthMakesIt
G
  • Locked
SOLD Brand New TTI 440 - 218 = 2 to 2 1/8 Step Headers Coated/Polished $850.00
Replies
2
Views
1K
GTX JOHN
G
FivePointParts
  • Locked
FOR SALE Lots of Mopar Engines for sale Located in the Pacific NW
2
Replies
32
Views
7K
FivePointParts
FivePointParts
F
  • Locked
SOLD 1967 Pro Street Fastback Barracuda
Replies
3
Views
4K
Furyous
F
Auto Transport Service
Back
Top