I can barely hear my Vortech at idle when I am in the car. Out of the car, you can hear it a lot more. It's dead quiet when cruising, but like Tom I've got a fairly loud exhaust system (OR X pipe and Magnaflows)

 

yeah I totally agree. I didn't mean that one was faster than the other only that the difference in the way they make power and the way that feels is significant.

 

no problemo man.. but like I wrote you really should experience both if you are on the fence. If it's possible that is

 

sorry if I came off as putting words in your mouth, I didn't mean to. I just know how some people are- they read what one person says and they think it's the gospel

+1..... agree 100% on that!

 

Oh no I understood. I tried to make it clear but I think it was good you posted that just to clarify

And yeah I think anyone who is doing research on the net should take everything with a grain of salt. If there are hundreds of people saying the same thing then you probably are getting some good info. Or if a person truly is qualified in some way then you're probably alright... probably hehe.

Always best to see for yourself if possible. Becuase ultimately that's what it comes down to.

 

Do I sell every chance I get - YEP. Do I come here time in and time out good bad or indifferent - YEP. I am just a guy trying to make a buck. I promise to dial back the salesman in me

 

Exactly what I said - The centrifugal blower is much stronger above 3500 rpm

 

I for one have to say that while I have never delt with you or GMS I appreciate the fact that you and the rest of the vendors come on the boards to commuicate with possible buyers- regardless of intentions. I feel at the very least you all are making an effort to reach out to a good portion of the public on a more personal level...Then again thats just my 2 cents

 

So let me rephrase a question thats kinda been puzzling me ever since I made the post about starting a roll race at around 3500rpms on page 4...

Lets say there are 2 Stangs completely equal/stock except for 1 is running a Twinscrew, 1 is running a Centri, ...Both are lined up right at 3500 and punch it at the exact same time... How would the race play out?



Edit: Basically what Im trying to figure out is if the Centrifugal blower is better up top then the Twinscrew- Would the TS still get a slight jump, yet be reeled in by the Centri? Or would the race be equal for a few seconds because the Centri is already making a good amount of boost at that RPM? And lastly...Am I totaly over-analyzing everything in this entire thread?

 

Well I guess we need to try this out . If here is the long answer. If 2 cars were both in 2nd gear running side by side at 3500, my guess is the centrifugal cars would get a way. same story but htis time both cars are in 5th gear and can't down shift. The TS would pull on it and by the time the Centrifugal got into it sweet spot , the TS would be long gone.

if both cars were auto trans and could pick any ear they wanted - I would bet on the centrifugal again

Or you could just put a turbo on it and have the best of both worlds

 

Haha, Yeah I would go Turbo but I just spent like 14 hours putting on my new exhaust and Im not all that happy about taking it off

 

Well - then do you want to do huge burnouts or do you want to hual ***. The TS will be the best kick in the pants down low and the centri will make the most peak power

Look at it like this - if you shift at 6100 when you hit 2nd the rpm drops to maybe 4900 to 5300 (depends on gears) it that range teh centrifugal is more efficient then the TS

 

yep

 

My gosh - you mean there is someone out there that agrees with me????

 

I do too as well J.R.

 

Is this my Xmas Present

 

Yeah. Now where is mine?

 

Ours came with a Saleen S/C onboard. The only thing I have heard bad about either of the 3 is that the Kenne Bell tends to operate at a much higher temperature then does the Whipple or the Saleen. Im sure you do know about over acheiving on the engine with boost, dont go hog wild with it unless you plan on forging the bottom end. If you do that the next question you might want to ask yourself is how much per year do you plan on spending on new rear tires.

QWKENUF

 

You know, like I said, I've had a Procharger on my '05 and now I have a twin screw Whipple and both were dyno tuned. I'm sitting here looking at the dyno sheets and I just do not see the loss of mid and top end power on the graphs with the Whipple. I think the biggest misconception with twin screws is that they don't have the top end pull like a centrifugal. The fact that a twin screw has so much pull down low makes the top end less noticable and of course the twin screw graph won't have as steep of a curve up top because the power isn't pouring on all up top. The power is a gradual bottom to top curve, not a mid to high onslaught like the centrifugal has.

I'll be the first to admit that my top end doesn't feel as good as it did with my Procharger, but I believe it's misleading to assume it's the way it really is. With the Whipple the bottom attack is bad *** and that really steals the show before any revs even come into play.

Here are a couple examples from my dyno sheets:




PROCHARGER HP:
3500 rpm's 240
5000 rpm's 420
6300 rpm's 470 peak

PROCHARGER TQ:
3500 rpm's 365
5000 rpm's 435 peak
6300 rpm's 410
__________________________________________________ ____________
__________________________________________________ ____________

WHIPPLE HP:
3500 rpm's 290
5000 rpm's 422
6500 rpm's 480 peak

WHIPPLE TQ:
3500 rpm's 440
5000 rpm's 455
6500 rpm's 390
(TORQUE PEAKS AT 4650 rpms 474 ft lbs)

Pay close attention to what the hp and tq differences are between 3500 rpm's and redline. The hp is basicly the same with both blowers. The torque is where the big difference exists. The twin screw has extreme low end torque. As a matter of fact it has 400 ft lbs at only 2300 rpm's. That's sick. The twin screw does have less torque at redline, but the bottom end difference in torque between the 2 blowers is where the buck stops. There's a difference of 20 ft lbs at redline between the blowers. At 3500 rpm's the difference is staggering....75 ft lbs and it's even worse than that lower in the rpm range.

Bottom line: Twin screws pull hard up top it's just that the bottom end pull already steals the show.......BIG TIME!

The Procharger was at 11 lbs boost, the Whipple at 10.5 lbs boost. The comment that a centrifugal blower is much stronger above 3500 rpm's is just plain wrong. I've got dyno proof of that with the same car, same mods, same basic temp and humidity. I will say that the Procharger definitely feels stronger up top, but the torque curve is smaller and placed up higher in the rpm range. That's why it feels that way from what I see.

 

Very good comparison in anthony...That definitely got me leaning towards the Whipple!