I'm looking for some intake manifold suggestions from the more experienced 1/4 mile bracket racers on the board. I want the most performance out of my motor, of course, and am unsure if I should go with a single or dual plane. I have a 2" cowl hood, that I'm not willing to change, so I suppose that would be the only limiting factor. Engine/Drivetrain specs are as follows...

SBC 406 w/ forged bottom end
Spun no faster than 6500rpm
AFR 220 heads (not yet purchased, still need to decide on 65cc or 75cc)
Comp hyd roller 300/306 dur. .562/.580 110*
TH400 w/ trans brake and 4500rpm stall
rear end and gear ratio yet to be determined.

There are a couple other things to determine as well, I have a borg warner S372 turbo (72mm) that I am considering using w/ a blow thru carb...

If I don't turbo, I will have an 850 carb w/ n2o

thoughts? or do I need to figure out what I want to do more thoroughly before any suggestions be made?

 

With that many cubes, those heads, that cam, and a 4500 stall you are foolish not to run a single plane with a dominator flange and a dominator carb.

 

I forgot to mention that I won't be spinning any faster than 6500rpm...

This is the main thing that has me torn between single and dual plane, from what I've read, which isn't a whole lot, the single plane won't have the advantage unless I spin 7-8k...

 

Dont waste your time with a dual plane on that motor.

You got ahold of some bad info.
Single plane and dont look back

 

Super Victor, 2925. Plenum volume is needed with the bigger ci and big cc heads.

 

Thanks for the replies...super victor was my original choice, looks like it will remain as so...

 

Give some plenum work to that SV to really get the most out of it, nice gains to be had.
pm me if you need help with it.