Six pack or dual quad

[Nitrofish1]

had to dig a bit just to find the filter element :/

 

[am3rican]

brand new holleys and intake from summit run $1725, air cleaner and intake add another 350 to that.

But you'll Also need fuel and vacuum lines, brackets, springs, linkage, throttle cables, choke thermostat, and I'm sure odds and ends. The linkage kit alone costs $100

 

[gdrill]

:eusa_whistle:



http://ontario.kijiji.ca/c-cars-veh...-Mopar-440-Six-Pack-Set-up-W0QQAdIdZ515047689

 

[GrabberOrange69]

:eusa_whistle:

View attachment 148152

http://ontario.kijiji.ca/c-cars-veh...-Mopar-440-Six-Pack-Set-up-W0QQAdIdZ515047689

A numbers matching setup for a 4 speed...of course it's going to be lots more, plus in Canadian $$$. I don't think he's doing a concourse resto, but I guess it just proves I got an even better deal than I thought.

 

[Nitrofish1]

So why is it that a single plane intake does better numbers on the dyno than the 6 pack? Is the intake manifold on the 6 pack restricting, I mean come on, you're flowing 1,350cfm at WOT, and a 950 or 1050cfm 4bbl will give you better numbers?

 

[440runner]

How About Both,Kind of!! 500 Stroker with dual Quad and 6 pack air cleaner.

 

[tallhair]

I'm voting for the 6 Pack and I'm planning to put one my 68 R/T this summer

 

[Garys1969RR]

So why is it that a single plane intake does better numbers on the dyno than the 6 pack? Is the intake manifold on the 6 pack restricting, I mean come on, you're flowing 1,350cfm at WOT, and a 950 or 1050cfm 4bbl will give you better numbers?

I believe a 6 pak intake would have a broader torque curve. In other words, it would have more torque at 2500 RPM than the single plane. But the single plane would produce more horse power and torque at 5000 RPM than the 6 pak. These are just approximate values to show the different characteristics between the 2 types. The single plane is generally going to make more top end power than a dual plane.

 

[440+6]

So why is it that a single plane intake does better numbers on the dyno than the 6 pack? Is the intake manifold on the 6 pack restricting, I mean come on, you're flowing 1,350cfm at WOT, and a 950 or 1050cfm 4bbl will give you better numbers?

It's actually around 955 cfm for a six pack setup if you convert to the way 4 barrels are flowed.

4 bbl are measured at 1.5hg of vacuum and 2 bbls at 3hg

To convert from one system to another (with a very small percentage of error) is relatively simple. Simply use the square root of 2 (1.414). Thus to convert a two-barrel rating into a four-barrel rating, divide the two-barrel rating by 1.414. To convert the four-barrel rating to a two-barrel rating, multiply the four-barrel rating by 1.414.

 

[themechanic]

brand new holleys and intake from summit run $1725, air cleaner and intake add another 350 to that.

Don't forget the price of a new hood to fit all that under.

 

[robinsonwr]

Lets say youre building a 500+ cubic inch stroker motor from a 440, but youre keeping your car pretty authentic in the overall scheme of things, would it hurt the power of the motor too much to do a six pack setup? or would it be comparable with that six pack look still?

We built a 500" RB with a Eddy 6-Pak manifold with XFI EFI. When we spoke with the guys at Indy they said it is about a 60-80hp loss over a single four barrel. The engine made 638hp at 5800. Not to long ago a 505" build used the two four set up and dynode 30hp less than a single four barrel. So from those two I would say two four setup. If you really want the most power a single four is the best option.

 

[tallhair]

Don't forget the price of a new hood to fit all that under.

6 BBL should fit under a stock bulge hood which he was probably going to anyway, maybe even a flat hood. I pretty certain Bernie's setup fits under his stock hood IIR or were you going another route Nitro?

 

[Nitrofish1]

6 BBL should fit under a stock bulge hood which he was probably going to anyway, maybe even a flat hood. I pretty certain Bernie's setup fits under his stock hood IIR or were you going another route Nitro?

Included with the car is a fiberglass 6 pack hood scoop. Can't let that just sit there..... Although honestly id use the scoop even if i was running a single or dual 4's

 

[Photon440]

It's actually around 955 cfm for a six pack setup if you convert to the way 4 barrels are flowed.

4 bbl are measured at 1.5hg of vacuum and 2 bbls at 3hg

To convert from one system to another (with a very small percentage of error) is relatively simple. Simply use the square root of 2 (1.414). Thus to convert a two-barrel rating into a four-barrel rating, divide the two-barrel rating by 1.414. To convert the four-barrel rating to a two-barrel rating, multiply the four-barrel rating by 1.414.

BINGO! I was waiting to see if someone would point out the different rating systems.

 

[tallhair]

What we need here is that video Bernie posted up of 6 BBL set up on a road test. I'll see if I can find it


[video=youtube;tLx5vbCl4LU]http://www.youtube.com/watch?feature=player_embedded&v=tLx5vbCl4LU[/video]

 

[Nitrofish1]

What we need here is that video Bernie posted up of 6 BBL set up on a road test. I'll see if I can find it


[video=youtube;tLx5vbCl4LU]http://www.youtube.com/watch?feature=player_embedded&v=tLx5vbCl4LU[/video]

I like the throttle response, and arent we just looking for more torque doing street driving anyways?

 

[tallhair]

I like the throttle response, and arent we just looking for more torque doing street driving anyways?

I'd say this one runs pretty well and I love the sound at around the 2 plus minute mark when he finally opens up all 6 BBLs!

 

[SublimeSixpack]

Cool video. That engine's pretty stout.

P.S. I like your '68 Coronet. Picked one up myself last February. Pretty sure you'll like the Six Pack set up if you go that route.

 

[GrabberOrange69]

.... If you really want the most power a single four is the best option.

...unless of course the 2x fours are on top of a tunnel ram.

It's really more about the style and design of the intake. Since no one has built a clean sheet single plane "fit under the hood" dual quad setup, or any new clean sheet design dual quads in decades, it's really not a good comparison. Lots of engineering effort had been put into single 4 single plane intake over the last 2 decades.

Go with the 6 pack!

 

[Nitrofish1]

Cool video. That engine's pretty stout.

P.S. I like your '68 Coronet. Picked one up myself last February. Pretty sure you'll like the Six Pack set up if you go that route.

I know, I really miss her too, all I can do while I send off payments for her is sit at home and drool over the endless possibility of parts options.