MoparFins

Techical Discussions => Tech- - Engine => Topic started by: Jason Goldsack on April 05, 2009, 05:09:27 AM

Title: Intakes
Post by: Jason Goldsack on April 05, 2009, 05:09:27 AM
Dual Plane versus Single Plane..

OK.. on my 361 I have an M-1 dual plane intake. To me it looks like it is basically an aluminum version of the 383 magnum intake.

On my drag car it made a three tenths improvement at the strip over the 383 magnum 4 hole intake and the open Thermoqaud intake. So I thought it would work great on the heavy Windsor.

I also have a single plane M-1 Intake. It made the same ET at the track but was 3 1/3 mph faster.

My question is...

Should I try the single plane on the Windsor and do you think it would help MPG or Power? I get 16.5 MPG right now with the Windsor with 2.76 gears.

The 361 in my Windsor has a 383 Magnum cam and Open Chamber heads as the only modifications.


Title: Intakes
Post by: Stan Paralikis on April 05, 2009, 06:24:14 AM
Dual plane to help the MPG.
You'll have more toque at the low end, therfor you'll be more likely to "feather" the throttle at low speeds which is most of your driving
And seat of the pants on a mild motor,doubtful  of anybody if they say they can feel any extra power with the single plane.


Title: Intakes
Post by: Stitcherbob on April 05, 2009, 06:51:15 AM
Single plane for racing or EFI conversions only.... you need the torque of the dual to get the mass moving. If the engine never sees more than 5500 rpm, the dual is your choice.




Title: Intakes
Post by: Leaburn Patey on April 05, 2009, 04:20:12 PM
(http://www.moparfins.com/forum/smileys/smiley10.gif)
Dual plane.
Single plane will hurt low torque and MPG.
 
Title: Intakes
Post by: Steve on April 05, 2009, 05:26:59 PM
I have a dumb question that is related. . .
 
What is I pull the 500 CFM 2BBL throttle body off my Magnum and replace it with a 4 BBL body.  Any ideas what will happen?  Think it will do something to the power?
 
I believe it's a dual plane under the adaptor for the 2 BBL.
 
POLARACO2009-04-06 00:03:41
Title: Intakes
Post by: Stan Paralikis on April 06, 2009, 04:00:33 AM

Quote from: POLARACO
I have a dumb question that is related. . .
 
What is I pull the 500 CFM 2BBL throttle body off my Magnum and replace it with a 4 BBL body.  Any ideas what will happen?  Think it will do something to the power?
 
I believe it's a dual plane under the adaptor for the 2 BBL.
 

You been drinking????(http://www.moparfins.com/forum/smileys/smiley2.gif)

Title: Intakes
Post by: Steve on April 06, 2009, 07:24:02 AM
Yeah. . .I'm still regirgitating that Rott Gut you drink (http://www.moparfins.com/forum/smileys/smiley36.gif)
Title: Intakes
Post by: Ken on April 06, 2009, 05:05:02 PM
Go for it...put a FORD displacement engine in there (http://www.moparfins.com/forum/smileys/smiley17.gif)(http://www.moparfins.com/forum/smileys/smiley2.gif)(Actually I like the idea)

Title: Intakes
Post by: Steve on April 06, 2009, 06:37:51 PM
(http://www.moparfins.com/forum/smileys/smiley3.gif)(http://www.moparfins.com/forum/smileys/smiley3.gif)
Title: Intakes
Post by: Jacques on April 07, 2009, 12:30:01 AM
Back on-topic:
 
For a car on liquid fuel (such as gasoline) which is going to do mostly low- to midrage RPMs, go for the dual plane.
 
On gaseous fuel (LPG, propane, CNG) the single plane can have an edge.
Title: Intakes
Post by: Snotty on April 07, 2009, 08:57:01 AM
I put an Edelbrock Performer 440 on my Newport.  I recevied better throttle response and beter milage.  They make the same for 383 which would work on your 361.  They're not that bad on price, and look good under your hood!  I would suggest you get one of those.
 
Single plane has been more for racing, so if you're thinking about the street, I'd avoid one.