Oh, I understand, even a ported GT40 lower is going to choke a healthy 347 NA. If you were going to go with a custom setup like that, seems to me a custom sheet metal lower would be in order.
Aside from the fact that even just the driving around ACT even under vacuum would be through the roof without some sort of aftercooler to control them, the current lower manifold offerings (stock or GT40) wouldn't even come close to being able to move the volume of airflow a 2.8L would support. I doubt you’d even come close to getting the blower into its efficiency range without having it all stack up on the intake side.....even with the lower manifold ported.
I suspect it would be great for bragging about the fact that you've got a 2.8L under the hood, but little else.
those kb blowers are really for a stalk or 306 setup you want big power gains go centrifigul i think i spelt it right 347 is to much cubid inch for for the kb charger.
Are there efficiency charts for twin-screw blowers? I'd love to see how one compares with a turbo/centri compressor.
Also, if a ported GT40 lower is good enough for 320 rwhp n/a, why would it choke a 2.8L KB? How much power do those motors make at 15psi, or roughly 2 bar on 4.6L motors? I mean, that 320 rwhp windsor should be pump over 600-ish rwhp at that pressure.
Chris
if your just going for a occasional track car with daily duties turbo is the way to go. when i had my 91 eagle talon TSi i had full spool at 2800rpm you just have to make sure the turbo is sized right for the engine. call hellion or hp they will hook you up. lets face it when you can get 330 ft/lbs of toruqe out of a 2 litre 4 banger you've done something right. i seen that car run 9.95 at 143 and drive 25 miles to the track. and with a 2-way boost controller its back to docile at the flick of a switch.
turbo isnt gonna happen, might not get tracked much but will see street time even less, this is not my DD not even close, i have a truck for that
Anderson Ford gives a recipe for 758 rwhp on pump gas.
Go to tech articles...Anderson Ford Motorsport Home Page
June 2007 under 5.0 Mustangs and Superfords.
AFM - Pump Gas Brags
if your just going for a occasional track car with daily duties turbo is the way to go. when i had my 91 eagle talon TSi i had full spool at 2800rpm you just have to make sure the turbo is sized right for the engine. call hellion or hp they will hook you up. lets face it when you can get 330 ft/lbs of toruqe out of a 2 litre 4 banger you've done something right. i seen that car run 9.95 at 143 and drive 25 miles to the track. and with a 2-way boost controller its back to docile at the flick of a switch.
On a side note, you saw a car with 330 ft-lbs run 9.95@143? How much did said car weigh? These numbers do not add up unless it was making that torque at 10-12,000 rpm or the car weighs around 1500 lbs.
custom sheet medal intake with a 03 cobra or lightning intercooler would be a route id be looking into.
I hope you've got a 10" cowl hood to go along with it. The Cobra/Lightning intercooler is one thick mo-fo. Remember the engine valley between the heads is no where near as deep on the OHV engines as it is on the OHC ones. Hence the reason many PD blower kids now actually invert their blower on the 2V and 3V SOCH engines. There's just so much unused real estate under there, they'd be a fool not to take advantage.
i know exactly how big it is... i worked for amazon racing for a VERY long time ive pulled a few blowers out. but if you look at the 2.8H its only about 6 inches tall and about another 6-7 for the intercooler. a 4 inch cowl should be enough to clear it id think. should be any taller then say a lightning motor which i think needs a 6" cowl to clear
i know exactly how big it is... i worked for amazon racing for a VERY long time ive pulled a few blowers out. but if you look at the 2.8H its only about 6 inches tall and about another 6-7 for the intercooler. a 4 inch cowl should be enough to clear it id think. should be any taller then say a lightning motor which i think needs a 6" cowl to clear
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