B block 6 pack

[murfman]

I’ve seen the Enginemasters test of RB intakes, and how well the 6 pack intake works compared to newer manifolds, am I safe to assume the Edelbrock 383 6 bbl intake will work as well? I’m building a 470 cu in 400 with TFS 240 heads and the TFS hydraulic roller cam and have a chance to pick one up. I had a 440 6bbl in the past and really liked the way it ran.

 

[33 IMP]

Step one is the manifold.
I have no experience with the 383 version, but I think it's probably pretty good.... (My experience is with the 440 version.)
but I honestly don't think it's superior in any way to the newer manifolds for low deck motors. I think they could run as well, with a large single 4bbl as the Sixpack for considerably less money.
How much is eyewash worth to you?
Edit: I'd run the track heat, with a 850-1050 4150 double pumper.

 

[PurpleBeeper]

I can’t see why not

 

[1968rt]

https://www.hotrod.com/how-to/hrdp-0712-mopar-intake-manifold-comparo/

 

[BSB67]

…. am I safe to assume the Edelbrock 383 6 bbl intake will work as well?

Yes

 

[RemCharger]

There was a few guys here that mentioned on 600hp builds, the 6 pack was down about 25hp.
Even if they were the same, I wouldn't want the extra cost and headaches. In all fairness, I wasn't around when they were new to get caught up in the hype.

 

[murfman]

I can’t see why not

Step one is the manifold.
I have no experience with the 383 version, but I think it's probably pretty good.... (My experience is with the 440 version.)
but I honestly don't think it's superior in any way to the newer manifolds for low deck motors. I think they could run as well, with a large single 4bbl as the Sixpack for considerably less money.
How much is eyewash worth to you?
Edit: I'd run the track heat, with a 850-1050 4150 double pumper.

Never said it was superior, but it doesn’t leave much of n the table. I have the track heat intake, but the 6 pack will fit under the stock hood.

 

[Jerry Hall]

My 68 383 Dart is now a 400 based 451 stroker with the Eldebrock low deck 6bbl intake. It fits under the stock hood. No dyno runs with the 4bbl or the 6bbl setup, but seat of the pants tells me there is no comparison. I have run both on this car and now have a convertor (not installed yet) to make the 6bbl manageable on the street.

 

[BSB67]

I would hope no one would buy a 6 pack set-up because they believe it the best hp/$ spent or best at anything for the money spent.

Certainly no one manifold is an end all for everything. But I don’t think there is any manifold that works as well in such a larger power range. It will work well on a 300 hp engine, and give up very little at 575 hp.

If your goal is max power on a drag car the six pac will never be the best $/hp.

 

[33 IMP]

Never said it was superior, but it doesn’t leave much of n the table. I have the track heat intake, but the 6 pack will fit under the stock hood.

Okay, that's a good reason.
Another good reason is having a set of carbs in good shape.

I have a 440 manifold that needs a little work. So I decided to see how cheap I could put together some carbs .
Even with cut-up Chinese two barrels (WAY cheaper than the real thing!) and adding in the bowls that would need changing, throttle linkage, fuel lines, air cleaners (even a plastic repop), it made NO monetary sense to spend that kind of money to break even performance-wise with what was already in use. Which is why i asked how much eyewash is worth to you.

 

[davek]

I would build the motor and get it broke in 1st before the candy.

 

[murfman]

Okay, that's a good reason.
Another good reason is having a set of carbs in good shape.

I have a 440 manifold that needs a little work. So I decided to see how cheap I could put together some carbs .
Even with cut-up Chinese two barrels (WAY cheaper than the real thing!) and adding in the bowls that would need changing, throttle linkage, fuel lines, air cleaners (even a plastic repop), it made NO monetary sense to spend that kind of money to break even performance-wise with what was already in use. Which is why i asked how much eyewash is worth to you.

FiTech has the 6bbl EFI for 2400$ I was leaning that way. And you lost me with the eyewash comment.

 

[VANDAN]

My 68 383 Dart is now a 400 based 451 stroker with the Eldebrock low deck 6bbl intake. It fits under the stock hood. No dyno runs with the 4bbl or the 6bbl setup, but seat of the pants tells me there is no comparison. I have run both on this car and now have a convertor (not installed yet) to make the 6bbl manageable on the street.
View attachment 1790367View attachment 1790368View attachment 1790369

That's some promising news ! I've wanted to put a 6bbl on my Challenger, but was concerned about it fitting under the hood, with the insul pad. Thanks for posting that Great Looking Dart !!!

 

[33 IMP]

FiTech has the 6bbl EFI for 2400$ I was leaning that way. And you lost me with the eyewash comment.
[/QUOTE
Eyewash, to me, means spending a bunch of money under the hood for looks, without much performance benefit. (Dress-up, or restoration doesn't count)
Low rise dual quads also fit my definition of eyewash.

 

[6PKRTSE]

I have 340, 383 short deck and 440 Six Pack set ups. All three have always performed well. Six Packs get a bad name due to most don't know how to tune them.

 

[Mopar Hunter]

If you want speed, you buy a Hellcat, if you want the cool factor, you buy a MoPar with a six pack.

 

[TorRed]

Ran a sixpack (6 BBL) setup on my Roadrunner back in the 70's. Special ordered the intake and had a set of 'rebuilt' carbs and aircleaner off of a Superbird. When it ran well it ran very well, but the used carbs were mostly junk and eventually took them off and put on a 4 barrel. Now, I have brand new everything to go back on and look forward to hearing that sixpack on the Bird once again!

 

[DeltaV]

I have 340, 383 short deck and 440 Six Pack set ups. All three have always performed well. Six Packs get a bad name due to most don't know how to tune them.

Which carbs do you run on the 383 six pack?

 

[33 IMP]

I loved the Sixpack on my roadrunner. I try not to discourage anyone from running the setup, that really WANTS to, and knows what they cost, and what to expect. (and can afford it)
There's not much Sexier than a Sixpack or crossram on a big block wedge.
It's just that the costs associated have risen SO high that there are cheaper/easier alternatives that run as well, and are easier to tune.
IF you have the manifold, and IF you have carbs,.... do it, they can work great.
I just can't justify $1500-$2500 worth of carbs, a 500 intake, and all the rest of the stuff necessary.
(Last I checked, a small block (more expensive than a big block version) complete setup ran about $4500 for everything.)

 

[33 IMP]

Which carbs do you run on the 383 six pack?

I obviously don't know exactly what 6PK R/T ran on his 383, but
I'm pretty sure the small block oem and the big block carbs were basically identical. They didn't overwhelm the small block cause of the vacuum secondary carbs.
If someone wanted slightly smaller carbs for a mild 383, the corvette tripower holleys were RATED smaller than the mopars' were. I don't know if they actually were.
(And both were rated as two barrels, of course. They are rated much smaller if rated as a four barrel would be).