Edelbrock E-Force?
Race Director
Joined: Jul 2000
Posts: 16,499
Likes: 2,384
From: Out Where the Buses Don't Run, Eglin AFB/ Niceville FL
2025 C8 Z06/7/E-Ray of the Year Finalist - Unmodified
2022 Corvette of the Year Finalist -- Modified
2021 C6 of the Year Winner - Modified
2020 C7 of the Year Finalist -- Modified
2020 C6 of the Year Finalist - Modified
Advanced
Joined: Jul 2004
Posts: 58
Likes: 24
From: Macedonia Ohio
Hello, this thread has provided a lot of great info. I am also considering installing one on my 2006 LS2 automatic coupe. Question I have not seen discussed a lot here... in reviewing the online installation guide, the last page "recommends" installing Edelbrock IAS shocks since "the addition of the E-Force Supercharger System may affect the weight distribution and subsequently the handling characteristics of your vehicle." Anyone notice any issues? One of the very early posts made mention about a lower ride height but I think the owner had a lowered car. Mine is stock ride height.
Thread Starter
Safety Car
Joined: Sep 2007
Posts: 3,502
Likes: 82
As far as ride height goes...The C6 Vette has an adjuster on either side of the front of the car that takes a 10mm wrench. I installed another Edelbrock last month for a gentleman and put 4.5 turns in those two adjusters and restored his ride height back to it's original factory position.
Here is the link to that second install... http://forums.corvetteforum.com/c6-f...ll-for-me.html
You are adding weight to the nose of the car and upgrading the shocks would be a sound upgrade. There are a lot of quality aftermarket shocks for the Vette.
Here is the link to that second install... http://forums.corvetteforum.com/c6-f...ll-for-me.html
You are adding weight to the nose of the car and upgrading the shocks would be a sound upgrade. There are a lot of quality aftermarket shocks for the Vette.
Last edited by Motorhead-47; Dec 12, 2010 at 07:13 AM.
Advanced
Joined: Dec 2009
Posts: 52
Likes: 0
From: ione CA
My corvette (2005) is also stock. I had the eForce installed on my LS2. The front end is a little lower and I have noticed tht the steering is a little "heavier", if that makes any sense. The S/C is great though and I will probably install some heavier shocks after I have made up my mind on any other body conversions that I am considering. Hope this helps.
Advanced
Joined: Jul 2004
Posts: 58
Likes: 24
From: Macedonia Ohio
My corvette (2005) is also stock. I had the eForce installed on my LS2. The front end is a little lower and I have noticed tht the steering is a little "heavier", if that makes any sense. The S/C is great though and I will probably install some heavier shocks after I have made up my mind on any other body conversions that I am considering. Hope this helps.
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
How Much Horsepower Every Corvette Engine "LOST" in 1972
Joe Kucinski
Top 10 DOs and DON'Ts for Protecting Your Convertible Top!
Michael S. Palmer
Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!
Joe Kucinski
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter
Joe Kucinski
8 Coolest Corvette Pace Cars (and Replicas) of All Time
Verdad Gallardo
Top 10 Corvette Engines RANKED by Peak Torque (70+ Years of Muscle!)
Joe Kucinski
Corvette ZR1X Will Be Pacing the Indy 500, And Could Probably Race, Too!
Verdad Gallardo
Top 10 Corvettes Coming to Mecum Indy 2026!
Brett Foote
Top 10 C9 Corvette MUST-HAVES to Fix These C8 Generation Flaws!
Michael S. Palmer
Le Mans Master
Joined: Oct 2009
Posts: 5,000
Likes: 2,261
Upgrading from 52lb Bosch to 65lb FAST injectors and moving from the 3.5" pulley down to a 3.25" pulley.
Thread Starter
Safety Car
Joined: Sep 2007
Posts: 3,502
Likes: 82
I don't think Edelbrock's decision to use 52lb injectors was a cost decision. There isn't much if any cost difference between the different size injectors from the same company. The injectors in the 1591 kit are sized for the 1591 kit's intended performance level. It's when you start modifying outside of the intended configuration that you'll need to make changes. In Edelbrock's defense, they do offer the 1592 tuner kit which sells without injectors, without a pulley and without a calibration.
Those same 52lb injectors are in the ZR1 and I'm told they are what is sold (unconfirmed) with the Maggie.
Those same 52lb injectors are in the ZR1 and I'm told they are what is sold (unconfirmed) with the Maggie.
Thread Starter
Safety Car
Joined: Sep 2007
Posts: 3,502
Likes: 82
Safety Car
Joined: Aug 2004
Posts: 4,067
Likes: 62
From: Houston Texas
If you are able, when you dyno the car again I would like to see the duty cycle of the injectors with 65# inj. I spoke with Jon at FIC and at 10psi he recomended the 72#ers, but that is to keep my duty cycle at 80%. I would imagine with the 65# inj. it would not be much higher than that.
Thread Starter
Safety Car
Joined: Sep 2007
Posts: 3,502
Likes: 82
If you are able, when you dyno the car again I would like to see the duty cycle of the injectors with 65# inj. I spoke with Jon at FIC and at 10psi he recomended the 72#ers, but that is to keep my duty cycle at 80%. I would imagine with the 65# inj. it would not be much higher than that.
Safety Car
Joined: Aug 2004
Posts: 4,067
Likes: 62
From: Houston Texas
From what I gather 80% is the accepted "safe range" but many go well above 90% without any issues. Jon felt either would work fine but it just made more sense to me with the manifold pressure at 10psi would drop the 72#ers to 62#, so I figured it was best to be safe. Bill (5 liter eater) explained to me that all the guys runing "60#ers" are actually 69# because they are rated at 3 bar not 4 bar, except for (as you know) the FAST injectors. All that said I figure if I am going to upgrade I may as well have plenty of injector to cover my a$$.
Here is the calculator from his site
http://www.corvetteinjectors.com/calculator.html
Here is the calculator from his site
http://www.corvetteinjectors.com/calculator.html
Last edited by vertC6; Dec 24, 2010 at 12:40 PM.
Thread Starter
Safety Car
Joined: Sep 2007
Posts: 3,502
Likes: 82
No real technical value but here is a shot of the 3.875", 3.50" and 3.25" pulleys. As you go smaller each one represents about 45 flywheel horsepower. Edelbrock also offers 3.00" and 2.75" pulleys.
3.875" Pulley Part # 15824
3.50" Pulley Part #15820
3.25" Pulley Part # 15821
3.00" Pulley Part # 15822
2.75" Pulley Part # 15823
- 3.875" = ~5.5psi 554fwhp 515fwtq (#1590 kit)
- 3.5" = ~7.5psi 599fwhp 547fwtq (#1591 kit)
- 3.25" = ~9.5psi
- 3.00" = ~11psi
- 2.75" = ~13psi
3.875" Pulley Part # 15824
3.50" Pulley Part #15820
3.25" Pulley Part # 15821
3.00" Pulley Part # 15822
2.75" Pulley Part # 15823
- 3.875" = ~5.5psi 554fwhp 515fwtq (#1590 kit)
- 3.5" = ~7.5psi 599fwhp 547fwtq (#1591 kit)
- 3.25" = ~9.5psi
- 3.00" = ~11psi
- 2.75" = ~13psi
Last edited by Motorhead-47; Dec 24, 2010 at 05:43 PM.
Burning Brakes
Joined: Mar 2006
Posts: 790
Likes: 63
From: Ft Worth TX
Come on Ken, put on your Grinch hat and get out your computer!
Let us know how much boost you really see and if it feels much different. With the 3.5" pulley I'm seeing 6Lbs until pretty close to shift point where it creeps up to 7 or so.
Let us know how much boost you really see and if it feels much different. With the 3.5" pulley I'm seeing 6Lbs until pretty close to shift point where it creeps up to 7 or so.
Burning Brakes
Joined: Aug 2007
Posts: 962
Likes: 0
From: SPRING HILL FL
Thread Starter
Safety Car
Joined: Sep 2007
Posts: 3,502
Likes: 82
I just drove a GS with the E-force on it. I am about sold on this unit. He is running 599 RWHP with an A6, but he has meth. My goal is 600 RWHP without meth. This thread has help alot. Thank you for your indepth results. I was going to go with a NA motor, but this unit has alot of positive features to it. Will be waiting for new results after Christmas.
As for my upgrade...I'm at 611rwhp (MN6) and would expect to see at least another 35rwhp out of this pulley change.
Last edited by Motorhead-47; Dec 24, 2010 at 09:17 PM.