0HennesseyPerformance

Couple quick shots of the latest Corvette Grandsport to be upgraded by our facility in Texas to our HPE650 Engine Package. This package includes the following items:

HPE650 Supercharged Includes
• TVS2300 Supercharger System
• High Flow Air Induction System
• Stainless Steel Long Tube Headers
• High Flow Catalytic Converters
• Fuel System & Pump Upgrade
• 160 Degree Thermostat
• All Necessary Gaskets & Fluids
• Professional Installation
• HPE Engine Management Calibration
• Dyno Tuning & Road Testing
• Hennessey Exterior Badging
• Hennessey Premium Floormats
• Serial-Numbered Dash and Engine Plaques
• 3 yr / 36,000 Mile Limited Warranty

Package is also available as a Mail Out Package for those who would like to do an installation themselves. Feel free to give us a call at the office for more details.

Speak to you soon.

FloydSummerOf68

Thats a good looking car.

JoesC5

I assume the HPE650 refers to 650bhp with the E-Force. Since the 599bhp E-Force has 7.5psi boost, what boost are you running to achieve the 650bhp?

FloydSummerOf68

I would guess the boost might actually be slightly lower since they're running longtubes with the package.

599 kit plus longtubes and custom dynotuning could easily pick up the additional 51bhp

0HennesseyPerformance

That is absolutely correct.

FloydSummerOf68

Any numbers from it on your track?

0HennesseyPerformance

Not on this particular model. The vehicle is in the showroom right now waiting on the customer to arrive for delivery.

JoesC5

I saw that the car had longtubes but didn't think they would add 51 horsepower. I figured they installed a smaller pulley then what comes with the 599 kit along with the headers.

I was comparing this 650 HP setup with Lingenfelters 670 HP LS3 that has the E-Force, CNC ported heads and a GT9 cam along with the dyno tune and 160 thermostat. No headers. If headers were worth that much HP on the E-Force, I wonder why Lingenfelter didn't throw a set on and end up with 700+ HP. If you're going to open up the engine(H&C), installing headers is a piece of cake and not that much more money.

0HennesseyPerformance

Headers installed onto an Edelbrock 599 kit is not going to net you 51hp.

Without getting into technical words and descriptions, here is what happens with any Supercharger setup...

Lets say you have a supercharger kit making 7psi on a factory engine and it produces 600bhp. If you add a set of headers onto that same engine, you will make about 630bhp, however you will loose about 1-1.5psi of boost. If you change the pulley on the supercharger to bring the boost back up to 7psi, you pick up the power and are not risking damage at all with a proper tune.

FloydSummerOf68

My thought, although it could be wrong, was that Lingenfelter probably was not including headers with their packages to keep it emissions friendly.

JoesC5

That very well could be, but my point was that Hennessey only added headers and jumped 51 HP over the base E-Force. Lingenfelter added CNC ported heads and a cam and only got 71 horses more then the base E-Force. I would think a H&C job would be over double the horsepower increase vs just headers. That's why I questioned the boost. I thought that maybe Hennessey changed the pully size not only to make up for lost boost with the headers, but maybe even a little smaller pulley yet, to up the boost over the 7.5 psi to add some extra horsepower.

AirBusPilot

It just shows what a bottle neck the stock exhaust manifolds are. Put headers on the LPE car with their mods and power would jump significantly.

FloydSummerOf68

A heads/cam/blower car would pick up crazy power with a set of longtubes over the stock ls2/ls3 manifolds.

2010CRYSTALREDGSCOUPE

Thanks for all the compliments on our car! We did all our homework before deciding on Hennessey Performance and we are so happy we did! Not only are we happy with the upgrade but the service from Hennessey has been the best. Our salesman, Tico, is a delightful young man who has had the utmost patience with us throughout the upgrade. The whole experience has been a positive experience! We would recommend a Hennessey upgrade to anyone & everyone who might be contemplating an upgrade!

FloydSummerOf68

Glad to hear it worked out well

2010CRYSTALREDGSCOUPE

Thank you so much! Tell us about your car Floyd!

B y r o n

Was there a misprint or am I missing something?

I was under the impression that the "TVS2300 Supercharger System" was a Magna Charger and not the Edlebrock unit.

0HennesseyPerformance

Edelbrock unit also uses the Eaton 2300 Internals that are found in the Magnuson units, however the Edelborck unit uses 12" long intake runners with their under the hood designed plenum.

Random84

Hennessey just answered - but the TVS2300 often is a reference to the internals/rotors made by Eaton: used not only by Edelbrock, but Magnison and the ZR1 unit. They're all basically the same internals with variations in plenum volume, runner length - and consequently external dimensions relating to hood clearance.

B y r o n

Thanks for clearing things up for me.