Allright, I've been looking into this lately, but I haven't really researched it too much. I want to supercharge my '86 Camaro. It's currently running a 350 out of a '69 or '70 Camaro. I don't know much more about the engine besides it has 2.02 heads and a big cam (not sure on the #'s). I'm currently running no emissions items whatsoever besides cats. I'm running Power steering and a water pump off of the engine.

I'd like to know what I should go with centrifigul type or screw type supercharging. I'm leaning towards screw type supercharging because it seems to be more affordable, but it doesn't seem to offer the same power gains as a centrifigul type.


Anyways, what's better to go with, a Centrifigul style supercharger or a twin-screw type? I was looking at a system like this, if I were to go with centrifigul type.

If I went with Roots style than I was thinking a kit like part #WND-6503-1 or like part # WND-6502-1, both on summit racing. I'm not sure whether I'd need the short or long nose so that's why I'm showing both.

Also, I'd like to know the pros and cons of going with one or the other if one of you could tell me. How much more power will I make with the centrifigul type vs. Roots style or vise versa?

Thanks, Brandon

 

Anyone?

 

A root or screw type supercharger will give boost rite away were as a centrifigul be dependent on rpm. I'd use a screw type if ypu have the $$$$

 

Well let's see. Ive had a S-trim, T-trim, and a Eaton roots blower on my 97 GT mustang. The S-T trim blower were great for me and my purpose. I loved the sound and I loved the top end. I never really got alot of time to get to know my eaton blower but from my expierience and people I know roots/screw are the funnest for the street. IMHO any decent centrifigul is going to make more power than a roots.

 

Hmm..... well I know the link I showed to the procharger kit inlcudes everything, but what about the 2 part #'s I provided to summit? Are those complete?

They're only about $300 less fort he screw type, so I think I might spring the extra $$$ for the centrifigul type. I don't mind waiting for boost to build up, plus I like the power that it provides over the screw type. Plus, with the screw type I'd have to spring $400 for a hood for added clearence. That about equals out the price for the centrifigul and screw type, plus I make more power with the centrifigul right?

I thought the screw type was cheaper though? I don't mind waiting for boost, and doesn't the roots type produce less power?

Thanks, Brandon

 

ANother option is to buy a complete car with the supercharger already installed. I know of one that is for sale at less than the cost of the parts themselves. Supercharger, heads, block, transmission, Accel superram, cam, etcetera.

 

A screw type is fairly costly but has simler efficiency to a turbo. The roots type is quite cheeper and is the lest efficiencent suppercharger.

http://www.whipplesuperchargers.com/...sp?ProdID=1162

If you don't want to get a new hood a centrifigul would be the to go. Make sure the kit you do get will fit under a your hood.

 

I'd rather do it to my car.

Aren't Roots and Screw type the same thing? If not what's the difference?

 

roots and screw look simular on the outside. but a screw (whipple) is much more efficient vs. roots (eaton, 6-71's, weiand,etc)

A screw type is just how it sounds: two meshed threaded rotors spining in opposite directions. the air charge is moved laterally along the case of the supercharger.

A roots type has two meshed lobes that spin in opposite directions and move the air axially (for the most part).

to understand the reasons why the screw is more efficient it would help to have a good understanding of fluid dynamics.

 

Okay thanks for clearing that up, I was under the impression they were the same thing, just different names.

No I don't understand fluid dynamics, but I will defintely take your word for it. Would a screw type be as eficient as a centrifigul? What would produce more power, the centrifigul or the Screw type? How much boost am I lookinga t making on either one, and does one of them put mroe stress on the engine than the other? Finally, since I mentioned the engine I'm running in the first post, can you suggest a good screw-type kit to go with that won't run me too much $$$ and will still provide a good amount of power?

Thanks, Brandon

 

As far as abiatic (sp?) efficiency goes a screw and centrifugal are about the same (depends on what models).

you could get almost any amount of boost from either one (within reason)

a centrifugal wont have the low end punch of a screw type but, will be much easier to package and probably take less power to drive the supercharger due to less rotating mass.

you will have to know the internals of the engine at hand to apply boost to it other wise you will just have a time bomb

compression ratio
cam specs
ring end gaps
piston type
etc

get some good books on the subject and read up.