My brother was saying that on, I'm guessing a dual plane intake, I believe that's what I just got, there's a picture below. That if you cut about 1/4" down on that divider plate in the middle and remove that 1/4" section, that I would gain some low end torque. Anyone ever heard of this??

 

yeah, you can do that. there are a few mfr's that do that on their intakes stock. i also know a builder that takes the wall almost all the way out too. it's supposed to let the pressure/vaccume equalize on both sides of the manifold and help equalize the flow or some crap. i did it a few times and didnt notice much.

 

I would think that removing that divider plate would turn your dual plane into a single one. If I'm right then single plane intakes don't promote off idle torque as well as duals do.

 

Adds some top end power at the exspense of low end power,if you have a mild 350 don't waste your time.

 

if hood clearance allows. If the loss of lowend comes with an appropriate increase of hi-rpm power, then its a good trade-off. The standard performer type intake will not make much hp above 5500 regardless.
If your GM motor still has the stock cam, I would not worry about it.

 

Yeah. Forget it. Not worth doing. If you think you want to try something like this then get a 1/2" open spacer and throw it on top first before you permanently grind away the plenum in the manifold.

 

agree to that...it's a lot easier to take that material out than it is to put it back

 

Your brother has it wrong.
If you cut out the center divider all the benefits of a dual plane
will be lost. Like smooth cruising, low and midrange torque, and gas mileage and throttle response. If you want a single plane,
go buy one. Like a Victor Jr. If you need to increase the top end power of your dual plane, put on a larger carb. Try a fully divided spacer (Edelbrock, TD etc.) to increase plenum volume. Or get one that is tuned to a higher rpm EG(Performer RPM).

 

He didn't mean the whole thing, just a small section. But I'm just going to keep it the way it is.

 

It's supposed to aid in upper RPM HP, not lowend.

Take a look at the newer dual plane intakes, they have the cutout as you describe.