curiosity killed the cat

[93fox5.0]

so i gotta ask i personally myself think im gonna go with a kenne bell flowzilla setup i just love the sound and have heard nothing but good about it so why why why does it seem like more ppl opt to pick the vortech/procharger type superchargers over something like a kenne bell i mean they both obviously have the goods and bads like everyone else but why does not many ppl have intrest in the kenne bell type superchargers?

 

[Cobra912]

well from what I have read, they have insane low to mid range power/torque but suffer on the high end rpm wise and heat soak can be an issue without an intercooler. Not sure how accurate those statements are sorry. I went with a centrifugal due to cost.

 

[deftsound]

I don't know how it is with the 5.0's but with the 4.6's most everyone these days go with a roots type blower.

The roots style blowers cost more than the centrifugals, thats a big reason. Id imagine with a 5.0 the advantage of a roots type blower is less than that with a 4.6 because they have more low end power and torque to begin with than a 4.6, thus nullifying the advantage of a roots.

 

[foxmustangman]

Kenne Bells are only more expensive than a centrifugal if you get a cheap one. If you actually get a nice centrifugal blower with some good boost you're paying the same price. Kenne Bells take more drag off the engine to turn where as centrifugals take nothing to turn and produce boost. Basically it all depends on what you're wanting the car for. Drag=Centrifugal, Track use=either, Street fun=Kenne Bell. I got the Kenne Bell because i love being able to spin my tires at every light with minimal effort and i LOVE that sound! Everyone has their opinons.

If I were you I'd read the book "The Guide to Street Supercharging" and make the decision yourself. Thats what I did.

 

[93fox5.0]

well right now i think i got my mind made to do TF twisted wedge heads(ported) with some sort of low comp. dish style piston (anyone wanna suggest where i can get some plz let me kno) bore the 302 over to a 306 i wanna go with the x-303 cam and a kenne bell 2.1L flowzilla supercharger anyone wanna suggest anything i may need to do to make atleast 500hp? and preferably not blow my engine up oh and i wanna run atleast 14psi on the supercharger

 

[RatStang]

If you are set on the Kenne Bell, I would opt for a set of AFR heads over the Twisted Wedge for one simple fact:

The twisted wedge heads have are 3/8" higher surface than OEM style heads where the valve covers mate. In order to get the blower to fit, you'll have to install an upper plenum spacer. When you install the upper plenum spacer then you have to have the snout bracket for the Kenne Bell modified for it to fit.

It's a pain in the ass that can easily be avoided by running OEM style heads (doesn't necessarily have to be AFR).

On the plus side of the taller heads:

The Flowzilla inlet is a pain in the rear-end all by itself. If you're using stock or stock style fuel rails and regulator, you will quickly discover that the relief machined into the inlet is not large enough to accomodate the regulator. As a result, the inlet pushed down on the reulator, stressing the pass side fuel rail enough to cause the injectors to leak. A 3/8s in spacer would obviously allow the blower and inlet to fit without coming in contact with the regulator.

Alternatively, you can fix this problem with stock height heads by slotting the screw holes for the fuel rails 1/8th of an inch and installing 1/8th in. bushing between the fuel rail an the intake. Leave the two pass side fuel rail hold-down screws loose until the blower is fully mounted then tighten them down (recommend using lock-tight blue). This is still an easier method to deal with vs. the upper plenum spacer and modifying the blower snout bracket IMO.

Other item of note for the Flowzilla install:

Have a decent size brass punch handy. You'll need to beat down the ridge where the firewall and cowl come together in the engine bay in order for the Flowzilla inlet to sit back far enough to be properly mated.


Edit: Kenne Bell used to sell brackets modified for TFS heads. They don't anymore but they do include instructions in the boocklet on how to do it. If you go this route, I'd probably take those instructions and my bracket to a machinist and let him do it.

 

[93fox5.0]

ok ratz wut heads wuld u suggest that i can get most power out of here plain and simple im looking for this car to be my dd street/strip car with full interior and rollcage and im not satisfied till my wheels are capable of getting off the ground lol

 

[93fox5.0]

bump!!!!!!! lookn for more answers

 

[1991notchbackLX]

Kenne Bells are only more expensive than a centrifugal if you get a cheap one. If you actually get a nice centrifugal blower with some good boost you're paying the same price. Kenne Bells take more drag off the engine to turn where as centrifugals take nothing to turn and produce boost. Basically it all depends on what you're wanting the car for. Drag=Centrifugal, Track use=either, Street fun=Kenne Bell. I got the Kenne Bell because i love being able to spin my tires at every light with minimal effort and i LOVE that sound! Everyone has their opinons.

If I were you I'd read the book "The Guide to Street Supercharging" and make the decision yourself. Thats what I did.

This is a false statement and can give people reading the wrong impression. How can you say a belt driven supercharger imposes no parasitic drag on a motor? Both the pulley on the snout of the KB and the pulley on the centrifugal supercharger are driven by the rotation of the crankshaft, thereby imposing parasitic drag as well as stress on the crank snout. I believe you're confusing a turbocharger with a centrifugal supercharger here. A turbocharger is driven by hot exhaust gases leaving the exhaust manifolds and therefore takes advantage of work already done by the motor to turn a turbine and produce boost. No pulley on the turbo means no parasitic drag. It isn't my intention to shoot you down, but there's enough misinformation floating around the internet as it is.

 

[BigmacK192]

This is a false statement and can give people reading the wrong impression. How can you say a belt driven supercharger imposes no parasitic drag on a motor? Both the pulley on the snout of the KB and the pulley on the centrifugal supercharger are driven by the rotation of the crankshaft, thereby imposing parasitic drag as well as stress on the crank snout. I believe you're confusing a turbocharger with a centrifugal supercharger here. A turbocharger is driven by hot exhaust gases leaving the exhaust manifolds and therefore takes advantage of work already done by the motor to turn a turbine and produce boost. No pulley on the turbo means no parasitic drag. It isn't my intention to shoot you down, but there's enough misinformation floating around the internet as it is.

+1. Beat me to it.

 

[93fox5.0]

lol well i get that they both run off a pully system and both have some sort of drag on the motor but im lookn for more info lol i have some common since but i kno more about imports and turbos as i had an 03 evo 8 b4 this car but new to 5.0 stangs and superchargers i kno turbos are an option but seem a little complex and i want long tube headers