supercharged 7.3

[drmiller100]

ot, but years ago i built a 400 small block with vortek heads off like a 99 chevy.

that motor made BIG go at pretty low rpm. those vortek heads are really impressive for how cheap they are.

[mschn99]

Originally Posted by drmiller100

ot, but years ago i built a 400 small block with vortek heads off like a 99 chevy.

that motor made BIG go at pretty low rpm. those vortek heads are really impressive for how cheap they are.

the 400 is a torquey motor anyways.....i bet it would perform exelant with some modern chevy heads.....hmmmmm

[RJacks258]

WOW, I had no idea this thread would get this kind of response. I was thinking of not making the pulley on the charger smaller, but the pulley on the drive side I would make bigger, the one that I will run tandem to another existing pulley. This idea I think would work. do some research guys you will see alot of diesels that run in the flats, and Pikes Peak have turbo+supercharged engines. Now I know we're talking 2 completely different engine setups, but in theory it should work as a gain. There is one truck that comes to mind that runs Pikes Peak. I don't know the name, but it has 4 turbos and 3 superchargers. 1600HP +. As far as whoever said it would be better to try a twin turbo on a 7.3, that would be a much harder and more expensive endeavor. There isn't a company out there that I can find that makes a kit like they do the Cummins and Duramax. If you know of one let me know. I think mechanical wise, from a do-it-your-self stand point I would rather try the supercharger. And one more thing, the exhaust drive turbo does create a load when the air is not moving fast enough to build boost. Same concept as for the reason we make less restricted exhaust systems. That exhaust gas has to go up around and around and through tight confines then back down and out the back of the truck. It may not be as restrictive as a belt driven system, but still restrictive.

[f450-freak]

using a supercharger will steal horsepower from the engine .. it takes hp to spin the supercharger.. twin turbo is a more efficent way to do it. someone out there has a kit that works well or just buy 2 smaller units cheap off ebay and a local muffler shop should be able to bend up some pipes to make it work....thats my 2 cents

[twildman]

Originally Posted by f450-freak

using a supercharger will steal horsepower from the engine .. it takes hp to spin the supercharger.. twin turbo is a more efficent way to do it. someone out there has a kit that works well or just buy 2 smaller units cheap off ebay and a local muffler shop should be able to bend up some pipes to make it work....thats my 2 cents

http://www.longislandperformancedies...0-%20Turbo.htm

Here is a twin turbo kit. Scroll down just a hair

[pro99line]

I am almost about to give up on trying to explain that a supercharger does not rob as much power as you think. I stated when run with a belt but not blowing into the intake "just to keep the test the same" and then removing the belt only gained 3/10 in the 1/8th mile. Now that is nothing to even worry about. Most people sleep on the light that long. I am justtrying to prove the theory of it robbing power as being a really minor issue in this guys idea of adding one to his truck. I just do not think this should be a concern because it is so minimal.

[drmiller100]

if you triple the size of the drive pulley, then you are tripling the belt speed. get enough belt speed, and you cannot keep a belt on the pulleys.

i tried to build a supercharger for a snowmobile. had BIG problems with the belt speed.

FWIW.

again, if you are scared to mount two turbo chargers SOMEWHERE in the engine compartment, then you probably should be nervous about mounting an even larger supercharger where belts and stuff will get to it.

supercharger, particularly the centrifical type you are contemplating, pump air a a function of the square of the RPM. this means you would relatively little air at lower rpms.
turbos, OTOH, function more as a function of throttle position. give it more throttle, it gets more fuel, which prodcues more heat, which produces more boost.
kind of hard to argue with that logic for a pickup truck.
for drag racing, positive displacement blowrs make the most sense IMO>

[f450-freak]

Originally Posted by pro99line

I am almost about to give up on trying to explain that a supercharger does not rob as much power as you think. I stated when run with a belt but not blowing into the intake "just to keep the test the same" and then removing the belt only gained 3/10 in the 1/8th mile. Now that is nothing to even worry about. Most people sleep on the light that long. I am justtrying to prove the theory of it robbing power as being a really minor issue in this guys idea of adding one to his truck. I just do not think this should be a concern because it is so minimal.

ok.. i wasnt sure that type of supercharger was usable on diesel engines. i remember back in the days when we got 671's of diesel busses. and converted them to our gas cars. still it seams like a lot of money and custom work to make a supercharger of that style work well on a diesel. did someone come out with one just for the diesel?

[bigcountry250]

Are there any pictures/ videos of supercharged PSD's out there?

[pro99line]

Ok guys. I found this on ebay and thought it may be interesting.

http://cgi.ebay.com/ebaymotors/2-sta...QQcmdZViewItem

It is a supercharged 7.3 blowing into a turbo.