a little out-loud math:

in two rotations, we displace 3.8 liters of air.
in one rotation, we displace 1.9 liters of air.

at 6500 RPM, we'd pull in 12350 liters per minute. that'* 436.1361 cubic feet per minute (CFM).

do you know the velocity of the air moving through your motor?

more out loud math:

your maf has a max reading of 190 grams/sec (it may or may not read above that properly, from what I'm reading).

now, if your motor was breathing well enough that it was 100% efficient (yeah right, but we'll assume it anyway), check my math:

IAT of 86F (30 C), density of air is 1.164 kg/m^3 = 1.164 g/liter
1.164 g/liter * 12350 liter/min * 1/60 min/sec = 337.5667 g/sec

So, if my numbers here are right, with a perfectly flowing setup, at 6500 RPM, you could outflow your MAF.

<edit> the l67 maf can do up to 320 g/sec

except nobody is shifting a L36 at 6500 RPM as far as I know.

figured I'd throw it out just in case he wanted to go that far... better to have the wiggle room available...

Pretty interesting math mkaake.
I'm shifting at 64xx and there are definitely people at cgp that are shifting at 6500+

thanks... I was going to take it a step further, and calculate the max/min size for the intake to maintain laminar flow, but since I don't know our actual flow numbers from the maf, it ended right about there... I imagine a 3" could handle quite a bit. Maybe I'll use the 3" as a baseline, and see how much we can flow before we're turbulent...

NO! I need to WORK!!!


darned bc club!



I try to maintain a good balance of work vs club while I'm here doesn't always work out as planned.

20% work, 80% bc is a good number.

while I agree, I'm not sure GM agrees