Can anyone please tell me the difference between a Single Plane and Duel Plane intake?

Thank you
Joe.

 

From Popular Hot Rodding:

"A single-plane intake manifold is the simpler of the two layouts, connecting the plenum under the carburetor with runners leading fairly directly to the cylinder head ports. The two-plane design appears more convoluted with a divided plenum with one side's plenum dropping down lower than the other, and the respective high or low runners routed alternately to the left and right cylinder heads of the engine."

For the entire article, click here: http://www.popularhotrodding.com/eng...ake/index.html

 

thats not a hard question, nor a dumb 1, a single plane is just that as you look into the throat where the carb sits you see a wide open plenum and all intake runners are at the same level. power usually starts in at around 3000 rpm and dies around 7000 or so depending on manufacture,
a dual plane has two plenums one low wile the other sits about a 1 1/2" higher with a divider between the right and left side. "odd firing side usually sits lower" intake runners are set a different levels per plenums power for the dual is usuall around 1500~6500
so dual plane better low end
single plane better top end
hope i helped

 

bar -

Yup, what '66 said. More free flowing single plenum - better high end, more convoluted dual plane = better low end torque. Depending on the size of the runners, there can be a lot of over lap.

Oh yeah, big single plenum manifolds really look cool

Archer

 

Thanks fella's.

The reason I ask is I'm wondering about my carb/intake combo. The carb is a 605 cfm Carter AFB and the intake is a Edelbrock Torker 340 (single plane).

Edelbrock no long sells the Torker 340 intake and looking through their carb application guide they recommend a duel plane intake for use with their 1405 carb (their equivalent to the Carter).

The info you guys gave me kinda confirms that this may be part of the reason why I have a huge stall at take off.

I've found some rather good looking intakes on ebay for $139, KMJ Performance. But when Edelbrock sells their for $100 more I'm thinking the KMJ's must be coming out of China, anyone know? Even though I can't afford it I would pay the extra $100 for made in the US.

Joe.

 

Just like with most companies, you pay for the name. Granted, Edelbrock is good, but you can save yourself some money but going with a different brand.