Edelbrocks E-Force
Tech Contributor
Joined: Jan 2006
Posts: 4,761
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From: Saint Louis MO
St. Jude Donor '14-'15
A centri, on the other hand, will start to build around 2000-2500rpm and continue to climb all the way up.
Here's a chart from the E-Force for the LS7 C6 Z06:
A second chart from a Camaro install:
Last edited by Theta; Jan 15, 2014 at 08:33 PM.
Tech Contributor
Joined: Jan 2006
Posts: 4,761
Likes: 240
From: Saint Louis MO
St. Jude Donor '14-'15
Also, Andy has a great explanation between the different types here:
http://www.aacorvette.com/supercharg...in_page=versus
http://www.aacorvette.com/supercharg...in_page=versus
Drifting
Joined: Dec 2009
Posts: 1,404
Likes: 7
From: Malverne New York
That makes the decision difficult. There's never an easy decision lol. There are things I like about the Roots style set up and things I like about the Centri set up. I guess you can't have it all.
Tech Contributor
Joined: Jan 2006
Posts: 4,761
Likes: 240
From: Saint Louis MO
St. Jude Donor '14-'15
I feel the same way - I own a roots style vehicle at the moment, and it's great to have instant HP. However, it's only 300hp in a tiny Front-Wheel drive car. I can't imagine the traction issues with 550 instantly.
I also adore the sound of a KB or most PD superchargers versus a Procharger or Paxton/Vortech which sound more like a turbo.
Decisions, decisions.
I also adore the sound of a KB or most PD superchargers versus a Procharger or Paxton/Vortech which sound more like a turbo.
Decisions, decisions.
Drifting
Joined: Dec 2009
Posts: 1,404
Likes: 7
From: Malverne New York
I feel the same way - I own a roots style vehicle at the moment, and it's great to have instant HP. However, it's only 300hp in a tiny Front-Wheel drive car. I can't imagine the traction issues with 550 instantly.
I also adore the sound of a KB or most PD superchargers versus a Procharger or Paxton/Vortech which sound more like a turbo.
Decisions, decisions.
I also adore the sound of a KB or most PD superchargers versus a Procharger or Paxton/Vortech which sound more like a turbo.
Decisions, decisions.
Tech Contributor
Joined: Jan 2006
Posts: 4,761
Likes: 240
From: Saint Louis MO
St. Jude Donor '14-'15
Have you driven forced induction sports cars before? There's a distinct feeling between turbo, twin turbo, dual scroll, PD/roots, centrifugal, etc.
It's really a seat of the pants decision versus staring at graphs.
It's really a seat of the pants decision versus staring at graphs.
Drifting
Joined: Jul 2013
Posts: 1,726
Likes: 770
I prefer centrifugal style blowers because V8's already make plenty of torque, and I like that feeling of the car pulling harder and harder as it nears redline.
My dad had a CTSV, and I really loved the instant torque in that thing, but that's because it weighed 4300lbs. It needed it haha.
Last edited by C7pimp; Jan 16, 2014 at 01:43 AM.
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Tech Contributor
Joined: Jan 2006
Posts: 4,761
Likes: 240
From: Saint Louis MO
St. Jude Donor '14-'15
I prefer centrifugal style blowers because V8's already make plenty of torque, and I like that feeling of the car pulling harder and harder as it nears redline.
My dad had a CTSV, and I really loved the instant torque in that thing, but that's because it weighed 4300lbs. It needed it haha.
With something like the C7, it already has plenty of grunt to get to the 3000-3500rpm engagement point, and then go from there.
It's essentially like spooling a turbo (centrifugals being very similar in that regard), and yields more usable power when you already have what you need down low.
Sr.Random input generator
Joined: Jan 2008
Posts: 7,773
Likes: 2,210
From: Sammamish, WA
I wonder why noone offers a Rotrex kit for Corvettes. They are (claimed to be) quite a bit more efficient than both roots type and other centrifugal superchargers. There are Rotrex kits for many cars for use at the track, since these superchargers tend to be least affected by heat soak.
http://www.rotrex.com/Home/Technology
http://www.rotrex.com/Home/Technology
Tech Contributor
Joined: Jan 2006
Posts: 4,761
Likes: 240
From: Saint Louis MO
St. Jude Donor '14-'15
I used a Rotrex setup on my MINI for a while. The current record holder for the R53 class is a Rotrex-based platform pushing over 700hp.
Never seen it outside of that world.
Never seen it outside of that world.
Drifting
Joined: Dec 2009
Posts: 1,404
Likes: 7
From: Malverne New York
From what has been described, it sounds like the centri set-up would give me the power I enjoy most since the power of the LT1 should already be able to give me that grunt I want at the beginning. What sort of maintenance is needed with a centri set up that isn't needed for a roots style set up? Also, how is it "less" reliable?
Former Vendor
Joined: Aug 2005
Posts: 16,897
Likes: 412
From: Lewisville TX
St. Jude Donor '03-'04-'05-'06-'07-'08-'09-'10-'11-'12-'13
All depends on how you want the car to drive....personally for a street car I think the E-force systems work very well. If it is going to be a 'highway' car then the centri cars will recover much quicker and typically be able to make much more top end.
Last time I talked to Edelbrock they were taking verbal deposits so to speak on them, but nothing released on numbers; HP or $ wise. Probably won't hear anything for another month or so. They are saying first quarter of 2014 but that could be March.
Last time I talked to Edelbrock they were taking verbal deposits so to speak on them, but nothing released on numbers; HP or $ wise. Probably won't hear anything for another month or so. They are saying first quarter of 2014 but that could be March.
Sr.Random input generator
Joined: Jan 2008
Posts: 7,773
Likes: 2,210
From: Sammamish, WA
I do have a '13 Miata, on which I'll be installing such a kit soon. I'm looking forward to seeing how it works.
Melting Slicks
Joined: Sep 2004
Posts: 3,153
Likes: 114
The only issue I can see is the need for 2 units for big power. Rotrex make a 700bhp capable version now I think but you would still want 2 on a vette. This just make the packaging a little bit harder.
The former wheel to wheel Motorsport (kurt urban) did a twin rotrex LS engine and he struggled to make over 1000rwhp. Think that was on smaller units than what you can have today though.
Chris.
Tech Contributor
Joined: Jan 2006
Posts: 4,761
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From: Saint Louis MO
St. Jude Donor '14-'15
Just an update from their website:
http://www.edelbrock.com/automotive_...hicles_needed/
As of three days ago, they posted a new request for a C7 wet sump test vehicle. It says they need it for 4-5 weeks.
Anyway, that being said, I don't think we're going to see this until April at the soonest going by that new info.
http://www.edelbrock.com/automotive_...hicles_needed/
As of three days ago, they posted a new request for a C7 wet sump test vehicle. It says they need it for 4-5 weeks.
2014 CHEVY CORVETTE C7 (WET SUMP ENGINE)
Purpose: Supercharger R & D
Edelbrock Parts to be Installed: E-Force Supercharger
Drivetrain: Manual Transmission
Duration: Edelbrock will require the vehicle for approximately 4-5 weeks
Requirements: Vehicle must be stock with under (50K) miles
Deliverables: Installation, documentation, calibration, dyno graphs
Date Posted: 2-5-14
Purpose: Supercharger R & D
Edelbrock Parts to be Installed: E-Force Supercharger
Drivetrain: Manual Transmission
Duration: Edelbrock will require the vehicle for approximately 4-5 weeks
Requirements: Vehicle must be stock with under (50K) miles
Deliverables: Installation, documentation, calibration, dyno graphs
Date Posted: 2-5-14
Race Director
Joined: Dec 2004
Posts: 13,760
Likes: 75
From: Haymarket VA
I totaled my NA 427 C5 in December. That car had incredible tip in and would roast the tires from idle. It made 420 Ft/lbs of RWT at 2200RPM and peaked at 6200RPM and 576/530. It was just a blast to drive on the street where most play is below 100MPH. I want to duplicate that with the C7 so the Edelbrock will find a home under the hood of mine....when it comes in. My bud VetVetter has one on his C6 and it looks like a factory install.
Last edited by WKMCD; Feb 9, 2014 at 08:00 AM.