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-   -   Single or dual plane manifold? (https://www.lateral-g.net/forums/showthread.php?t=54349)

DBasher 01-22-2017 03:07 AM

Single or dual plane manifold?
 
I've got the newer Sniper set up and was wondering which intake style to run. I had always thought dual plane was more street friendly and the single was for power at higher rpm...I've recently started seeing these TB style injection units being installed with the single plane intakes and it got me thinking (dangerous)

Any thoughts on this?
It's a mild 302 and I've got an older performer or a Victor JR to choose from.

Thanks
:cheers:

gerno 01-22-2017 09:02 AM

There's an episode of the show Engine Masters where they compare carb and TB injection on an LS. They started with a dual plane but couldn't get the injection to work with it due to air signal or something. They had to swap to a single plane and it worked fine. Not sure if it was only because it's an LS or what

That said, I ran TB injection with an air gap on my SBC for a few years without much of an issue. I think you'd be fine and like the longer runners for street driving but I'd keep an eye out for anything goofy going on

Tinker 01-22-2017 08:21 PM

With a carb, the single plane isn't as efficient at low speed (street driving)due to a weak signal to the carb (low speed air not drawing fuel through the carb). With efi, fuel delivery is not dependant on a vacuum signal, so fuel will be consistent at low speed. With mpfi there isn't even any fuel in the intake runners so fuel puddling in the intake is non existent. The single plane works very well with efi.

TheJDMan 01-23-2017 07:06 PM

I agree with the above, the single plane works well on the street with EFI. I'm running a TBI on top of a Victor Jr and have no complaints with the street performance.

DBasher 01-23-2017 08:13 PM

Thanks all, looks like I'm cleaning up the Victor Jr. and going that route. I swear every time I go in the garage I either go backwards or it costs me money. :bang:

Tinker 01-23-2017 10:02 PM

Ohhh, you are not alone :G-Dub:

rustomatic 01-24-2017 10:51 AM

Because I'm old, I seem to recall the old Holley Pro-Jection setup needing a single-plane manifold. A world of problems seems to disappear after you give up carburetion . . .

Does this mean that you'll have a working hotrod soon?:headspin:

DBasher 01-24-2017 05:19 PM

Quote:

Originally Posted by rustomatic (Post 653047)
Does this mean that you'll have a working hotrod soon?:headspin:

It means I'll be one hurdle closer to making Thunderhill in April.:D

Flash68 01-24-2017 07:08 PM

Quote:

Originally Posted by DBasher (Post 653073)
It means I'll be one hurdle closer to making Thunderhill in April.:D

:popcorn2:

rustomatic 01-25-2017 12:24 PM

Sweet! Goals are so stressful, though . . .

Quote:

Originally Posted by DBasher (Post 653073)
It means I'll be one hurdle closer to making Thunderhill in April.:D



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