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P.S. it rocks.

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P.S. it rocks.

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I was just wondering if it had alot more power than a single 4 bbbl as I was considering piecing together one if so

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[quote a good single 4-barrel on a decent intake will put a 6-pack on the trailer 9 times out of 10. The 6-pack intake has some flow problems that are almost impossible to deal with.



Reason being most are unfamiliar with properly tuning a sixpack set up otherwise... a properly tuned sixpack set up will match/beat a modified 4 bbl set-up
Also, the 6-pack flow rating if compared at the same pressure drop as a 4-barrel would be 850 cfm.

That "flow" rating comparison would be more apt to be around 930-950 cfm

R.

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[quote a good single 4-barrel on a decent intake will put a 6-pack on the trailer 9 times out of 10. The 6-pack intake has some flow problems that are almost impossible to deal with.



Reason being most are unfamiliar with properly tuning a sixpack set up otherwise... a properly tuned sixpack set up will match/beat a modified 4 bbl set-up


Also, the 6-pack flow rating if compared at the same pressure drop as a 4-barrel would be 850 cfm.

That "flow" rating comparison would be more apt to be around 930-950 cfm

R.

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The whole " a 4bbl makes more power than a 6 pack " is largely yet another Mopar urban myth that is spewed forth every time the topic comes up.

Here's the proof; http://www.hotrod.com/techarticles/hrdp_0712_mopar_intake_manifold_comparo/

which shows that the 6 pack manifold is the best choice for average hp and torque out of the AFTERMARKET manifolds and carbs tested in a 450hp motor. For a stock intake, the results are amazing and right on target with the best the aftermarket has to offer.

Obviously if you're building a 600+ hp race engine there are better choices, but the stage II test showed the 6 pack doing quite well in the 500+ hp range as well.

Dave

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Hey all,

Hope this is the right forum for this question. I am looking to buy a new 440 six pack. The complete set up from intake, carbs, air cleaner, linkage, etc... Who has the best price/service? Thanks Moparts

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you have a PM

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I read an article a few years back in one of the magazines where they compared the Six Pack set-up against a few different 4-bbl. set-ups.

The two magazine shootouts I have read show the Edelbrock Performer RPM & Holley 4-bbl. carburetor set-up being dead even with the Six Pack set-up when they were both dialed in on the engine dyno.




$500.00 shipped = Holley ultra series double pumper. (All aluminum lightweight carburetor with billet metering blocks & baseplate, clear sight glasses, ...)
$250.00 shipped = Edelbrock Performer RPM aluminum intake manifold
$350.00 shipped = Reproduction 340/440 large oval air cleaner
$100.00 shipped = Reproduction large oval air filter element
($1,200.00 = total)

$2,400.00+ = Six Pack set-up (Intake manifold, carburetors, linkages, fuel lines, air cleaner & filter, ...)


Is the 'wow factor' worth double the cost to you?!?

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Yes only thing that draws more attention is a Hemi, And I can't afford one of those.

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I read an article a few years back in one of the magazines where they compared the Six Pack set-up against a few different 4-bbl. set-ups.

The two magazine shootouts I have read show the Edelbrock Performer RPM & Holley 4-bbl. carburetor set-up being dead even with the Six Pack set-up when they were both dialed in on the engine dyno.



$500.00 shipped = Holley ultra series double pumper. (All aluminum lightweight carburetor with billet metering blocks & baseplate, clear sight glasses, ...)
$250.00 shipped = Edelbrock Performer RPM aluminum intake manifold
$350.00 shipped = Reproduction 340/440 large oval air cleaner
$100.00 shipped = Reproduction large oval air filter element
($1,200.00 = total)

$2,400.00+ = Six Pack set-up (Intake manifold, carburetors, linkages, fuel lines, air cleaner & filter, ...)


Is the 'wow factor' worth double the cost to you?!?

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Absolutely right. So it really breaks down like this;

6 pack advantages;

- power while still a stock setup
- fits under N96 hoods
- "wow" factor as mentioned.

RPM/Holley advantages;

- cheaper
- only one carb to mess with


......Choice is up to the individual......but as I said, the 6 pack is an amazing STOCK setup. If this hobby was all about speed for the money, we'd all be driving 440 powered A bodies (yes, with 4bbls!!)


Dave

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I read an article a few years back in one of the magazines where they compared the Six Pack set-up against a few different 4-bbl. set-ups.

The two magazine shootouts I have read show the Edelbrock Performer RPM & Holley 4-bbl. carburetor set-up being dead even with the Six Pack set-up when they were both dialed in on the engine dyno.




$500.00 shipped = Holley ultra series double pumper. (All aluminum lightweight carburetor with billet metering blocks & baseplate, clear sight glasses, ...)
$250.00 shipped = Edelbrock Performer RPM aluminum intake manifold
$350.00 shipped = Reproduction 340/440 large oval air cleaner
$100.00 shipped = Reproduction large oval air filter element
($1,200.00 = total)

$2,400.00+ = Six Pack set-up (Intake manifold, carburetors, linkages, fuel lines, air cleaner & filter, ...)


Is the 'wow factor' worth double the cost to you?!?

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true rating for a six-pak is 1030cfm. a big 4bbl on a dual plane intake making big power gains over a six-pak is insane.

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actually the rating is - 500cfm for EACH outboard + 350cfm for the center. that would be 1350cfm. and the seat of the pants effect when they kick in is amazing to say the least!

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true rating for a six-pak is 1030cfm. a big 4bbl on a dual plane intake making big power gains over a six-pak is insane.

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actually the rating is - 500cfm for EACH outboard + 350cfm for the center. that would be 1350cfm. and the seat of the pants effect when they kick in is amazing to say the least!

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Yeah, magical thinking strikes again! The 2-barrel carb ratings are at 3" Hg depression, the 4-barrel at 1.5" Hg. So to convert flow from 2-barrel terms to 4-barrel terms you have to divide by the square root of 2. The ACTUAL combined CFM of the three 6-pack carbs, RATED AS A 4-BARREL, is 955 cfm.

Now on to the article that Dpelletier referenced. The engine was a 383. You don't have to be a Mopar nut to know that 383 and 440 intakes are different. But given that the article was about 383 intakes, the results are somewhat favorable for the 6-pack. In average over 2500 - 6000 rpm it made the highest torque by 1 lb-ft over the Torker 383 and tied the Torker 383 in average horsepower.

In peak horsepower the 6-pack was beaten by the TM6, Performer RPM, Victor 383, Torker 383, Weiand High Ram single 4-barrel, Street Dominator and the M1 Single Plane. So it seems that there is truth in the contention that a good single 4-barrel will make more power on a good manifold.

There are flow problems inherent to the 6-pack design that limit its power potential on larger or higher revving engines.
Here's a quote from the referenced article: "We've seen this intake lose a lot of power compared to modern four-barrel intakes on bigger engines or ones with more rpm, but it seemed we just hit a really happy spot with our little 395ci big-block under 6,000 rpm."

R.

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but they ARE really, really cool!