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6 pack on a '67 440

sputnik 440

Capt Jim
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Why is it that I cannot find any thread or article on a 6 pack set up for a '67 440 in a '67 GTX?
I cannot see why a Mopar stock 6 pack and manifold won't fit up to a '67, but all I ever see are 6 packs for '68 -'70 and '71. Am I just blind, or is there a problem to fit the 6 pack under the hood of a GTX or Satellite? I am running 915 heads, ported and polished with headers and 3" exhaust, so I would believe that "breathing" is not the problem. I currently have a Holley DP 850 on a Dominator manifold. Here is the type of articles I find. This is from an Allpar.com article. What am I missing here? One other thing...the '67 440 was actually made in July and could be designated for '68 models I guess.
six-pack-road-test.gif
 
Is your query a question of IF you can put a 6bbl on a '67 - or is it one of there actually being any
factory '67 6bbl cars?
The chart you provide refers to factory 6bbl cars, not just any that someone slapped one on later on -
and as you can see, there were no Mopar '68 factory 6bbl cars produced.

Now, is it possible for you to make one? Sure, it's done all the time.
If you have never done so before (and you don't have someone who is actually good at tuning them), be forewarned - they can be a stone bitch to dial in, especially if your engine isn't exactly stock.
Each set up is unique to an extent - they have "personalities", if you will.
 
The factory only put them on 69, 70, and 71. They will go on any 440.

What's the question?
 
Mopar didn’t start putting on the 6 pack until 69. I put one on my 68 from a 69. Don’t see why you couldn’t put the set up on a 67. The only issue may be clearance with the hood. I used the 69 six pack hood as well as carbs/manifold. They’re sweet but temperamental.
 
To clarify, I know there were no '67 6bbl, that is not my question. Let me phrase this again. What I want to know is if there is a 6bbl set that is recommended for a '67 440. It seems that I see 3x2s for 69s, another that indicates it is for '70 and '71s, even one for a '68, but none I have found are recommended, or made, for a '67. I am not after a "stock" one because, as you said, they were not offered on the '67 440 (that I know of). I have never dialed in a set of 3x2s. 4x2s and many different 2x2s on sports cars. I would hesitate to tackle setting them up, but I do have several very good racer mechanics that do a great job. With that said, you are hitting on the one thing I am concerned about....because this 440 is not stock, it concerns me that the performance of an off the shelf set may not be advisable. On the other hand, the wow factor is desirable at either a show or a for sale venue. Looking down at an 850 Holley DP gets few "wows".
PS....I don't race. I am a mid-range, blow your doors off, kind of guy. Back to my question...Why don't I see 6 pack ads mention that they are for '67 Mopar 440s? Is it solely because the '67s did not offer them as stock, or is there an issue with '67 mechanics i.e. compression, heads....? Is any 6 pack set best for a modified '67 440, or doesn't it matter?
 
When I put the setup on my 68 it was mostly stock. Just had a little bigger cam but otherwise stone stock. The six pack engine I believe had - many things - than the regular 440 hp. I think they were rated for about 15 more hp only. I don’t see any reason you can’t put them on the 67, especially a modified 67. If you want a more detailed answer to your question you can post it on the A12 forum. Those guys are the six pack experts and will get you to where you want to go with detail. I doubt you’ll have any issues tho.
 
The six pack has no idea what motor is under it. Yes, the six pack will work just fine on a 67, or a 66, or a 72, or a 73........... It will clear the hood too.
 
My 1st 6 Pak went on my '65 Coronet 426 Street Wedge, w big solid cam. It fit under the hood w/ '69 1/2 OEM air cleaner. Six Paks were tough to get tuned well, on a stock or much upgraded motor. That is why they were so readily available in the mid'70's at reasonable prices. I had '69, 70 & '71 carbs on my 69 1/2 OEM manifold. For some reason with the tuning I figured out, the '70 set was slightly better than what I got out of the others. Lots of tuning advice has been given on this site.
 
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The six pack has no idea what motor is under it. Yes, the six pack will work just fine on a 67, or a 66, or a 72, or a 73........... It will clear the hood too.
This^^^^
They even fit in a '69 Barracuda that never came with 'em.
IMO you probably see no advertised "recommendations" from the manufacturer (or others) on which six pack setup to use for the '67 year 440 because they were not sold in a "package" with the car as new. Possibly the DC / MP books may have recommendations along with some jetting. I also seem to recall the 340 carbs are recommended over the 440 sets for the 383.
But you "could" even run the marine six pack setup on your 440 if you want to tune 'em for it.....
upload_2019-10-12_17-41-30.png
 
For me, learning how to set the idle mixture screws on the outboard carbs was an epiphany!
I had Promax mod all 3 carbs for additional flexibility, performance, and tuning ease.
The six pack carbs have fed quite a few stroker motors, reaching or exceeding 600 horsepower, and my 3x2 Holley carbs with the Promax mods and whatever additional changes I need to make are likely to be atop my future stroker motor as well.
Other than turbo boost I have never felt a kick in the *** like those outboard carbs opening (I have no NOS experience) and WOW is often heard when I pop my hood.
 
I've always been curious, how does the induction system know what the HP is? Does that really mean how many #'s of fuel the induction system can deliver? Just asking.
 
I've always been curious, how does the induction system know what the HP is? Does that really mean how many #'s of fuel the induction system can deliver? Just asking.
I am guessing that it takes a certain amount of air and fuel to achieve a certain horsepower level. Needless to say, there are a number of variables. My concern was their stated limit of 600 horsepower would be the limiting factor in a major expenditure on building a stroker motor. Also concerned about running anything at 100% capacity.
 
Bio, I suspect that is vendors indicator for the general consumer. It would give me some concern, since 600 HP is easily exceeded with todays parts availability. That sort of setup does sound interesting. My suspicion is that the fuel delivery programing has an upper limit that would need to be expanded for greater delivery(more HP). Just my guess. With proper fuel pump, lines/fittings & all the sensors for higher delivery, could be great.
 
Bio, I suspect that is vendors indicator for the general consumer. It would give me some concern, since 600 HP is easily exceeded with todays parts availability. That sort of setup does sound interesting. My suspicion is that the fuel delivery programing has an upper limit that would need to be expanded for greater delivery(more HP). Just my guess. With proper fuel pump, lines/fittings & all the sensors for higher delivery, could be great.
If I get to that point once I get that stroker built, and I want to switch from my Promax modded Holley 2bbl carbs to fuel injection, unless Holley comes out with the 3x2 system they have a patent application for, it looks like F&B would be the ticket. Direct port injection and 3x2 throttle bodies, configurable to just about any CFM you need (I know of a 1700 or 1900 CFM setup someone has) and any controller system that does the job...
Way more expensive than the FiTech, but with the F&B, the sky is the limit on performance.
 
Ya, the direct port would be the way to go. It's all in the combo of injectors, sensors, & controllers. I'm still stuck in the carb technology days.
 
I'm still stuck in the carb technology days
Well, I invested $1,400 in what was already 3 fully functional Holley carbs. It was about 2 months before Cruisin the Coast 2018, I had the 3 Rochesters off the 421 in the GTO at All American Carburetors being "restored" and my hands full between work and getting both the Roadrunner and GTO ready. Some of that total was labor, having Promax go through all 3 carbs, run them for "pretuning" on their very similar dyno mule, install all of the parts I bought, and fix a stripped screw hole on the diaphragm pump housing of the center carb. I also got their upper and lower braided fuel lines.
I think that they will work great on the stroker because of the ease of changing jets on the outboard carbs, their special metering block on the center carb, and the help I can get transitioning them from my current 440 to the stroker.
 
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bio, I'm sure with the adjustability you have, it will work great. Remind me, which manifold are you running?
 
Edelbrock/Chrysler aluminum 6bbl
I came very very close to buying the Weiand P3690982 6bbl recently, more for setting it up with the F&B direct port injection triple 2bbl throttle body system, like I saw someone else do, and because my current intake is a dual plane, but I decided to stick with what I have.
 
The OEM/Ede manifold works great with the needed carb tuning. I was REALLY tempted to go to the Weiand "back in the day". If the published "fixes" really worked, I'm sure that would be fabulous with your carbs. With a big motor, the OEM may not supply the air. Pretty sure the Weiand would. They also have the "wow" factor.
 
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