Root or centrifugal
Le Mans Master
Joined: Oct 2007
Posts: 6,149
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From: Greater Detroit Metro MI, when I'm not travelling.
Yes. But a farm tractor makes far more torque than either one of those options. The fact that you drive a Corvette means there are certain attributes about it that you value other than just its low rpm torque. The same is true about supercharger systems: options exist because they all have their pluses and minuses. Searching the forums would prove very beneficial here... I'll give you a hint: its a big forum: you are not the first or the 10th or even the 100ths person to be asking this exact question...
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Le Mans Master
Joined: Dec 2005
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From: Southeast TX
Le Mans Master
Joined: Oct 2007
Posts: 6,149
Likes: 11
From: Greater Detroit Metro MI, when I'm not travelling.
Le Mans Master
Joined: Jun 2008
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St. Jude Donor '15
Tech Contributor
Joined: Mar 2003
Posts: 12,094
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From: Colorado Springs, CO
St. Jude Donor '08-'09-'10-'11
Are you kidding? Anyone can light up the tires on the launch and once you shift, it never comes under 4500rpms again. So no, having more TQ on a dyno sheet from 2000-3000 doesnt make you faster. I'm at 2.44 secs 0-60 on the street since I was stock bottom end with a cam and headers. Adding another 250rwhp didnt make me faster 0-60. Making a car fast on the street is gears and tires. JoeG sees 2.7 sec 0-60's with a cam, headers and gears at 455rwhp (400hp less than me). If you get to real power one day, more TQ makes you slower. Im at 500rwtq at 2700rpms, 733rwtq at peak and I run only 5 degrees timing in the midband to pull back TQ on my car just to get it to the ground.
You best drive a centri car with 600rwhp and 550rwtq. You can light up the tires at any rpm in any of the first three gears even with an R-compound tire like a 555r2.
Mod for mod an ECS 1500 centri is faster than any of the top engine IAT heaters on the track and on the street.
I knew guys were buying those s/c's because they thought it makes them faster light to light. Puhleeze. All it does is break traction down low unlike a centri that builds power in a linear and controllable fashion.
You best drive a centri car with 600rwhp and 550rwtq. You can light up the tires at any rpm in any of the first three gears even with an R-compound tire like a 555r2.
Mod for mod an ECS 1500 centri is faster than any of the top engine IAT heaters on the track and on the street.
I knew guys were buying those s/c's because they thought it makes them faster light to light. Puhleeze. All it does is break traction down low unlike a centri that builds power in a linear and controllable fashion.
Tech Contributor
Joined: Mar 2003
Posts: 12,094
Likes: 197
From: Colorado Springs, CO
St. Jude Donor '08-'09-'10-'11
Im putting my 6 liter back in for TT testing and before I do the TT build, I want to do a few pulls with the stock exhaust, stock cam, and no headers, to prove that a Paxton 2200 can make over 700rwhp on a bone stock engine with no headers or any other mod other than a parallel fuel pump. I paid 6000 for this kit on sale.
Team Owner
Joined: Mar 2005
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From: salem OR
Safety Car
Joined: Oct 2001
Posts: 4,945
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From: Dallas/Valley Ranch TEXAS!!!
Once again this silly discussion arises... The Centrifugal kit wins hands down period... Spin explained all very well, also to add, with big power centrifugal setups there are options for boost by gear... But believe the hype from the P.D. guys if you will, they need something to justify the money they wasted...
Premium Supporting Vendor
Joined: Jan 2001
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From: Central Jersey
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Depends really on your goals and how you like to drive your car. The roots blowers are extremely reliable, make decent power and torque and look very nice under the hood too. The roots blowers are also fun to drive being the torque comes in pretty early as well. With the new Edelbrock kits out they also fit under the stock hood which saves a lot of money on having to buy an aftermarket hood, having it painted and hoping it actually fits and matches.
If the customer is looking for a decent HP gain, fun to drive, nice looking unit and does not plan on doing much track time the roots are a nice choice.
The pros to a centrifugal are a bit cheaper, all the kits fit under a factory hood, makes great power and torque and very expandable should you want more power down the road.
If a customer has any interest in track times we always do a centrifugal kit as they are much faster down the quarter mile.
Feel free to give us a call anytime and we will be happy to discuss both options and help you choose the right kit for you.
If the customer is looking for a decent HP gain, fun to drive, nice looking unit and does not plan on doing much track time the roots are a nice choice.
The pros to a centrifugal are a bit cheaper, all the kits fit under a factory hood, makes great power and torque and very expandable should you want more power down the road.
If a customer has any interest in track times we always do a centrifugal kit as they are much faster down the quarter mile.
Feel free to give us a call anytime and we will be happy to discuss both options and help you choose the right kit for you.
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Team Owner
Joined: Nov 2006
Posts: 21,136
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From: Long Island New York
Roots blowers come in first place...................when towing a 2 ton boat.
Thats about the only time that big TQ off idle is beneficial. I want my sports cars power to come on linearly all the way up the tach like any top shelf sports car should. Not heat soak and fall on its face at 5500rpm.
Thats about the only time that big TQ off idle is beneficial. I want my sports cars power to come on linearly all the way up the tach like any top shelf sports car should. Not heat soak and fall on its face at 5500rpm.
Melting Slicks
Joined: Jun 2006
Posts: 2,690
Likes: 1
From: Northern Calif
If you want to feel as if you have a bigger motor by goose'n the throttle here and there while daily driving and not all out racing, then the roots is the way to go. This type s/c feels more "available" while put'n around town. It is all a trade off.
Le Mans Master
Joined: Jun 2008
Posts: 6,716
Likes: 70
St. Jude Donor '15
Are you kidding? Anyone can light up the tires on the launch and once you shift, it never comes under 4500rpms again. So no, having more TQ on a dyno sheet from 2000-3000 doesnt make you faster. I'm at 2.44 secs 0-60 on the street since I was stock bottom end with a cam and headers. Adding another 250rwhp didnt make me faster 0-60. Making a car fast on the street is gears and tires. JoeG sees 2.7 sec 0-60's with a cam, headers and gears at 455rwhp (400hp less than me). If you get to real power one day, more TQ makes you slower. Im at 500rwtq at 2700rpms, 733rwtq at peak and I run only 5 degrees timing in the midband to pull back TQ on my car just to get it to the ground.
You best drive a centri car with 600rwhp and 550rwtq. You can light up the tires at any rpm in any of the first three gears even with an R-compound tire like a 555r2.
Mod for mod an ECS 1500 centri is faster than any of the top engine IAT heaters on the track and on the street.
I knew guys were buying those s/c's because they thought it makes them faster light to light. Puhleeze. All it does is break traction down low unlike a centri that builds power in a linear and controllable fashion.
You best drive a centri car with 600rwhp and 550rwtq. You can light up the tires at any rpm in any of the first three gears even with an R-compound tire like a 555r2.
Mod for mod an ECS 1500 centri is faster than any of the top engine IAT heaters on the track and on the street.
I knew guys were buying those s/c's because they thought it makes them faster light to light. Puhleeze. All it does is break traction down low unlike a centri that builds power in a linear and controllable fashion.
Premium Supporting Vendor
Joined: Oct 2004
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From: Providing the most proven supercharger kits for your C5/6/7 609-752-0321
I dont know about where you guys live, but even in the more urban area's of Jersey, traffic lights are still about a 1/4 mile away at least. 
With that being said, both style superchargers have their place, all depends on the owner.
With that being said, both style superchargers have their place, all depends on the owner.