Glad I found mine at a going out of business dealer ship. How the hell that stayed on the shelf in claimed is beyond me but scoop it up I did!
Six Pack question
- Thread starter LD-Ordie
- Start date
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K.O. SWINGER
Meeting in the alley since 1976
My point is I don't understand every time there's a six pack thread someone has to start talking about an RPM or a Victor or some other combo(no one asked) I can run anything I want including a blower if I chose to I have a beautiful m1 with built 850 Thermoquads sitting on the shelf but I choose my six pack because it's just badass , beautiful, and unique and as far as power not so much ? Stock eliminator 340s with six packs run in the mid tens a lot of the strokers with aftermarket heads around here can't touch that. That's my point.
It was an answer to the OP if you read what was asked. And your snarky harley reply, yeah whatever. Your car isn't the subject here. Your feelings get hurt? Jeez..
He has a dual plane on it currently, was talking MPG. Folks yammering about how a 6 pack will run with a well tuned 750-950 single 4 is total BS. They DON'T
So what about stock or SS.
It's the tune up that is the problem with his set up, I'd almost guarantee that.
Carry on.
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68 HEMI GTS
Well-Known Member
Actually that’s not BS. They can and they do in the right hands. I have a six pack that will run as good as most any single plane and 4150 carb. I’ve done it and ran about every combo on the car. This is on a high 10sec b body street car with a 500ci motor. About the only thing that’s been a bit stronger is a Indy single plane and a 1050 dominator. The vacuum operated six pack ran identical et to a heavily ported TM6 and a 4150/1050 carb.my mechanical six pack is really strong. I think it would be within a tenth or two of the Indy single plane. Granted I build some custom carbs so I probably have a bit of tuning advantage.
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68 HEMI GTS
Well-Known Member
please elaborate why it’s different
But he is comparing BB vs BB vs BB.
Displaying doth combinations of 4 & 6 bbl.’s.
IMO, I agree that it’s probably his tune in the engine.
Sorry to disagree with your prior statement on the 6 pack not being able to perform as well as the best dual plane & 750-950 4bbl. I don’t think it’ll outpower it but o also don’t think it’ll loose by much at all. Thanks also don’t see a 950 cfm carb doing daily driving duties ether. But what ever one can live with……
It's the intake. They are very different in terms of performance capabilities. The RB intake is miles better than the SB unit.
Rob, This discussion was about SB's... OP's stroker 408... You may draw whatever conclusion you like to discredit the ACTUAL testing done between the SB 6 pack and Air GAP/Victor manifolds. It's not even close, 35HP was the number in the middle on the stuff I helped on.
If a person can't tune a carb to drive on the street, then a 950 likely it's not for them. Doesn't discount the difference in performance. Even a 750 will beat the SB 6 pack. BTDT
6 Packs look cool...
68 HEMI GTS
Well-Known Member
you can daily drive about any carb if it’s properly set up and you have enough engine. Keep in mind most 950’s are a 1.45 Venturi and actually smaller than an old 850 sporting a 1.56 Venturi. I daily drove a dominator for a bit. Granted I did several mods to it to get rid of the inherently fat idle and transfer circuit they come out of the box with. You would have never known it was a dominator if you just hopped in and drove the car.
How much time do you have in porting the six pack manifold?
68 HEMI GTS
Well-Known Member
It's the intake. They are very different in terms of performance capabilities. The RB intake is miles better than the SB unit.
Rob, This discussion was about SB's... OP's stroker 408... You may draw whatever conclusion you like to discredit the ACTUAL testing done between the SB 6 pack and Air GAP/Victor manifolds. It's not even close, 35HP was the number in the middle on the stuff I helped on.
If a person can't tune a carb to drive on the street, then a 950 likely it's not for them. Doesn't discount the difference in performance. Even a 750 will beat the SB 6 pack. BTDT
6 Packs look cool...
granted I haven’t ran any healthy small blocks but I’ve had the SB intakes. I didn’t think they looked all the bad. Certainly I would do some serious grinding on one before running it but, I just don’t see it being a blow out. But I suppose I’d be willing to go above and beyond If that was the route I chose. But again I don’t have that first hand experience and it’s possible it just sucks. Now comparing what it costs to run one compared to a single 4 doesn’t make sense… lol
I have had this exact same argument over the big block six pack as well which I have proved inaccurate. So I’m always a bit open minded to their potential.
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68 HEMI GTS
Well-Known Member
hard to say, I’ve modified it a few different times experimenting with it. I’d say I probably have 3-4 hours in it. Working on the area under the carbs really made it happy on the big motor. I haven’t ran it at the track though since that mod. I’m not a put something on a car and leave it alone type of guy. I’m always experimenting and playing with stuff. Lack of any safety equipment in the car makes it hard to run at the track to get data though.
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Then turn your attention to my reply to the OP.
Again, Victor, single plane, different ball park.
RPM, the only dual plane to out do the 6’er.
That’s where I stand on it.
I also told him to use a RPM. Ported.
I’ve left replies before that I’ve had 800 cfm AFB carbs on 318’s and got laughed at and ridden like a two dollar ***** all the way to China and back while being told by my full of shift, it can’t be done.
Your preaching to the choir. But it’s not something you see very often at all. It’s more of the rarity to see. I never said it can’t be done it’s just something you don’t see on the grocery getter and 99.9% of small block hot rods, stroked or not.
I want that done to my B engines 6 pack.
A Holley 750 that gets 13 mpg around town....should be in a museum in the rare artefacts section, lol.
I would expect a 6 pack to get slightly worse economy, but not by much. Reason being the large variation in runner lengths of a 6 pack compared to a single 4 bbl intake. The mixture has to be rich enough for the leanest cyl to not misfire & that gets harder when there is a large variation in runner length.
I would expect a 6 pack to get slightly worse economy, but not by much. Reason being the large variation in runner lengths of a 6 pack compared to a single 4 bbl intake. The mixture has to be rich enough for the leanest cyl to not misfire & that gets harder when there is a large variation in runner length.
Bakerlite
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Well, if it's all about eye candy, then why would anything else matter?
The only question that would really matter is, weather it will fit under the hood.
Who cares about MPG if people are going to jizz in their jocks over it?
The only question that would really matter is, weather it will fit under the hood.
Who cares about MPG if people are going to jizz in their jocks over it?
SixPaksRule
Well-Known Member
this is better than a good movie
Properly tuned six pak cars outrun just about everything.
Gas mileage is good and always better than a 4bbl set up
I work on a 6 pak 505 alum head big block in a b body 4 speed. About 650-675 hp
Runs right next to the hellcat up to 140 mph.
Properly tuned six pak cars outrun just about everything.
Gas mileage is good and always better than a 4bbl set up
I work on a 6 pak 505 alum head big block in a b body 4 speed. About 650-675 hp
Runs right next to the hellcat up to 140 mph.
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Love the chime in Hellcat comparison.
As Crackedback noted, the OP has a small block.
Have you run one by chance?
cudamark
Well-Known Member
That looks like a Super Beeee...r!
kenelder
70 340 4spd 6 pack
I've been running a SB six pack since 1982, had 4 brl before that. I just like the six pack and the sound it makes when the outers open. If sound = speed then I guess I'm good . There's a ton of valuable information on this site if you look for it.
I kinda like the "looks" thing too.....
BTW, the OP's center carb looks like it has the 440 float vent.
. There's a ton of valuable information on this site if you look for it.I kinda like the "looks" thing too.....
BTW, the OP's center carb looks like it has the 440 float vent.
Steve Dart 69
Member
It's been a few years since I had my Six Pack set up but I have to say it was the most impressive running system I have had. Back in the day I had a built 340 and ran everything from the stock Thermoquad, a 750 double pumper and then the Six Pack. My engine had custom head work to handle the larger cam and valve train, lifter, rockers. The six pack really made the engine come alive and would pull to 7300 RPM's.
The thing is I had to modify the outboard carbs to handle accerlator pumps, metering blocks and fuel bowls from 750 double pumpers. I also had to build my own progressive linkage because I made the outboard carbs completely mechanical just like on a double pumper. I ran a 4 speed and 3:91 gears, at highway speeds of about 65-70 it would get 14-16 mpg on extended rides. Around town without jumping on it would get about 10-12.
I did this work back in the 80's when my car was just another 10 year old used car, I had access to a crate full of old used Holley's that I could scavenge for part also.
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