New Intake manifold coming. Looking for those interested
Originally Posted by Neal
HI!... But those who will go this far with their trucks will be racing them. Most with a turbo will have high stall converters. Like me I'll be running a 3000-3200 stall, so low end is no concern for me. I'm more concerned with 3200 - 7000RPM power. 

Originally Posted by s1037s
you could still gain power with a properly setup manifold that has longer runners than a lightning lower intake, even up to 7k. are you stil using the long runner intake from your first build?
yeh he is his own contradiction. even his intake manifold design hes toying with hes cuttin the runners down to about 7 inches tall.which is still considerable length
Originally Posted by Faster150
yeh he is his own contradiction. even his intake manifold design hes toying with hes cuttin the runners down to about 7 inches tall.which is still considerable length
Originally Posted by Neal
HI!... Actually the custom intake manifold I was playing with was for a N/A application. That's why the runners were going to be only 7 inches long compared to the stock intakes 18-20 inches. I don't mind losing 15-25 FT/LBS of TQ down low if I'm going to pick up 25-40 H.P up top. N/A engines are super sensative to runner length. Not so much with forced induction. 

haha u should go with the SHM ITB setup for ur turbo setup. just get a large airbox for the top. wont have but about 2" of runner length.
Originally Posted by Faster150
haha u should go with the SHM ITB setup for ur turbo setup. just get a large airbox for the top. wont have but about 2" of runner length.
Originally Posted by Neal
HI!... . N/A engines are super sensative to runner length. Not so much with forced induction. 

The camshafts determine the basic rpm band of the motor.
The intake tract length is a tunable item to favor (enhance) what ever part in that band you want to try to favor.
The tract length is from valve seat to the plenum.
The plenum demensions also affect the tuning, the tract length offers.
Without dyno testing, one cannot say what a peticular combination will do.
The physical demensions for optium power would be different for use with a centrifigal type supercharging vs a positive displacement type due to the difference in rpm where these blower begin to work, if the pressure is introduced to the motor at the same location..
Biggest differences are for the positive displacment is the low rpm boost that begins so the tract length would tend to favor being longer vs the shorter lengths favoring the higher rpm boost start of a centrifigal.
However most don't care either way as the large increase in power is all consuming, just to drive, and is never missed without some means of compairison.
The intake tract length is a tunable item to favor (enhance) what ever part in that band you want to try to favor.
The tract length is from valve seat to the plenum.
The plenum demensions also affect the tuning, the tract length offers.
Without dyno testing, one cannot say what a peticular combination will do.
The physical demensions for optium power would be different for use with a centrifigal type supercharging vs a positive displacement type due to the difference in rpm where these blower begin to work, if the pressure is introduced to the motor at the same location..
Biggest differences are for the positive displacment is the low rpm boost that begins so the tract length would tend to favor being longer vs the shorter lengths favoring the higher rpm boost start of a centrifigal.
However most don't care either way as the large increase in power is all consuming, just to drive, and is never missed without some means of compairison.
Originally Posted by Bluegrass
The tract length is from valve seat to the plenum.
The plenum demensions also affect the tuning, the tract length offers.
Without dyno testing, one cannot say what a peticular combination will do.
The plenum demensions also affect the tuning, the tract length offers.
Without dyno testing, one cannot say what a peticular combination will do.
Originally Posted by s1037s
I disagree. and so do all the other people who have done the testing. Again, IT ALL DEPENDS ON THE RPM RANGE OF THE MOTOR. you can have a long runner intake that pulls to 7k! Been there done that!
I'll be doing dyno and 1/4 mile testing with my stock intake manifold and the one I want run in N/A trim when my engines back together. I'll post my findings.
Originally Posted by chester8420
Unless you have somebody that knows a lot about fluid dynamics and resonating pulse frequencies. There's a lot or R&D that goes into a properly designed intake manifold.
yes!! we leave that to the F150online internet professional! who all have their E-degree's in fluid dynamics and pulse frequencies
Originally Posted by Faster150
yes!! we leave that to the F150online internet professional! who all have their E-degree's in fluid dynamics and pulse frequencies
Originally Posted by chester8420
I suppose it's possible that a person can build their own intake manifold and get all the runner lengths and sequencing right. But it'll be a shot in the dark without some careful calculations. I'm sure Neal is taking these things into consideration. If he isn't, then he's only considering 1/2 of the science that goes into an intake manifold. Or should I say a "N/A" intake manifold. And he's missing out on potentially huge gains in both low end torque and high end horsepower.
yep lol that shows in alot of his endeavors



