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    • The 2019 C7 Chevrolet Corvette ZR1 brings 755 horsepower from an LT5 V8 with a bigger blower and dual fuel injection

      The new C7 generation Chevrolet Corvette ZR1 is pretty much as expected. The main change that is a pretty big deal from an enthusiast perspective is the LT5 supercharged 6.2 liter V8 receiving a dual fuel injection system.


      What does this mean? It means that it has both direct fuel injection and port fuel injection. This fueling strategy is becoming increasingly common on high performance engines as direct injection alone can create problems.

      Namely, issues with injecting enough fuel at high horsepower levels especially when ethanol is thrown into the mix. Tuners are going to be able to get a ton of fuel into the LT5 and make huge power.


      The other big change is that the tiny 1.74 liter Eaton TVS blower from the LT4 is ditched for a 2.65 liter unit. The LT4 never should have come from the factory with such a small blower in the first place. Chevrolet rectified this mistake.

      The larger blower will make more power and generate less heat plus offer far more tuning headroom. It should also lend itself to a power curve with far more top end rather than being all about torque down low which makes the Z06 a handful when trying to put the power down. Factory boost pressure on the ZR1 LT5 is only 13 psi.

      Carbon ceramic brakes are standard with 15.5 inch six-piston rotors up front and 15.3 inch four-piston rotors in back.

      Tires are Michelin Pilot Super Sports with 285/30/19 fronts and 325/35/20 rears.

      Those who want to track will opt for the ZTK Performance Package which adds increased downforce courtesy of revised aerodynamics featuring a huge wing and Michelin Sport Cup 2 tires. The suspension is also revised and much stiffer than standard.

      So how much money for this 755 horsepower and 715 lb-ft of torque beast? Chevy has yet to say but expect it to be $130k+ optioned out. A massive performance value as Corvettes always are.










      This article was originally published in forum thread: The 2019 C7 Chevrolet Corvette ZR1 brings 755 horsepower from an LT5 V8 with a bigger blower and dual fuel injection started by Sticky View original post
      Comments 11 Comments
      1. richpike's Avatar
        richpike -
        It sounds mean AF too:



        -Rich
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by richpike Click here to enlarge
        It sounds mean AF too:
        That sounds like a car that means business.
      1. inlineS54B32's Avatar
        inlineS54B32 -
        Click here to enlarge Originally Posted by richpike Click here to enlarge
        It sounds mean AF too:
        -Rich
        That is one of the best sounding cars/engines/exhausts I have ever heard. That thing gave me a bit of a chill when listening to it. Wow!

        I can't wait until this car comes out, it's going to put out some insane numbers.
      1. richpike's Avatar
        richpike -
        Click here to enlarge Originally Posted by inlineS54B32 Click here to enlarge
        That is one of the best sounding cars/engines/exhausts I have ever heard. That thing gave me a bit of a chill when listening to it. Wow!

        I can't wait until this car comes out, it's going to put out some insane numbers.
        Agreed on all counts.

        -Rich
      1. Sticky's Avatar
        Sticky -
        The only V8 that sounds better than a modern cammed Chevy small block is something from Maranello.

        It's hard to beat these for pure sound:

      1. Batman's Avatar
        Batman -
        This is what the Dodge Viper should have been. Boosted, and a mod friendly ECU. I'm willing to bet that this Vette is making closer to 800HP than it's advertised 755HP.
        Long tube headers and full exhaust, pulley change, intake / air filters, and a tune.... easy 900+ HP on pump!
      1. Batman's Avatar
        Batman -
        This is what the Dodge Viper should have been. Boosted, and a mod friendly ECU. I'm willing to bet that this Vette is making closer to 800HP than it's advertised 755HP.
        Long tube headers / full exhaust, intake / air filters, pulley change and a tune.... easy 900+ HP on pump!
      1. Surquhar's Avatar
        Surquhar -
        Click here to enlarge Originally Posted by Sticky Click here to enlarge
        The only V8 that sounds better than a modern cammed Chevy small block is something from Maranello.

        It's hard to beat these for pure sound:
        Dam that sounds mean
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by Batman Click here to enlarge
        This is what the Dodge Viper should have been. Boosted, and a mod friendly ECU. I'm willing to bet that this Vette is making closer to 800HP than it's advertised 755HP.
        Long tube headers and full exhaust, pulley change, intake / air filters, and a tune.... easy 900+ HP on pump!
        I could not disagree with you more.

        The Viper is exactly what it was supposed to be.

        First of all, it undercuts this car by 400 pounds and offers 50/50 weight distribution.

        Secondly, the Viper can easily support 1000+ whp on the stock internals. No direct injection bull$#@! either. Just 8.4 liters of 'Merica.

        The Viper is perfect. The problem is people do not want a true driver's car anymore. They say they do but they don't buy it when they get it.
      1. Batman's Avatar
        Batman -
        Click here to enlarge Originally Posted by Sticky Click here to enlarge
        I could not disagree with you more.

        The Viper is exactly what it was supposed to be.

        First of all, it undercuts this car by 400 pounds and offers 50/50 weight distribution.

        Secondly, the Viper can easily support 1000+ whp on the stock internals. No direct injection bull$#@! either. Just 8.4 liters of 'Merica.

        The Viper is perfect. The problem is people do not want a true driver's car anymore. They say they do but they don't buy it when they get it.
        The Viper was a great car but as a former two-time Viper owner (I owned a GenIV Coupe and an ACR), I disagree with you when it comes to the mod potential. You could not make serious power with those cars unless you were running a standalone. I stopped keeping up with that car when I sold mine; but the last time I checked, if you were trying to make over 750WHP, you had to go standalone. That was a deal breaker for me. You had the Mustang, Vette, and GTR guys making more power and still being able to be OBDII compliant by running the stock ECU via a Cobb with multiple tunes. Every year, they would take their 900WHP+ car and get their Texas State Inspection sticker on the same stock ECU, via a different tune (Cobb). On my Viper, I had to swap ECUs and revert to stock just to pass emissions testing and get my Inspection sticker at less than 700HP flywheel! - and I was running simple bolts-ons (full exhaust, long tubes with cats, K&N filter). If I'm paying $100K+ for a car, I want to be able to mod it the way I want to mod it. I don't want the manufacturer telling me what to do with my car, or how much power I can make with my car by putting a nuclear code on the ECU. It's a well-known fact that the Mustang, Vette, and GTR ECUs are much more mod friendly than the Viper's. I will gladly buy a car that weighs 300 pounds more and handles decent, with big time mod potential and a mod friendly ECU. Viper was a great car for those who left it stock. When I buy a car or truck, I never leave it stock.
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by Batman Click here to enlarge
        The Viper was a great car but as a former two-time Viper owner (I owned a GenIV Coupe and an ACR), I disagree with you when it comes to the mod potential.
        I have to say the Gen V is on another level in this respect.

        Plenty of 1000+ whp examples on the factory ecu: http://www.boostaddict.com/content.p...rwhp-1147-rwtq

        You are right that a standalone is pretty much the default for twin turbo kits but there are setups tuned on the factory computer. I argued with a tuner about this exact topic: http://www.boostaddict.com/content.p...hp-on-pump-gas

        1000 whp on the stock ecu on pump gas right there.

        Click here to enlarge Originally Posted by Batman Click here to enlarge
        I stopped keeping up with that car when I sold mine; but the last time I checked, if you were trying to make over 750WHP, you had to go standalone.
        I keep up as I'm a huge fan and that is simply not true. A&C Performance has NA vipers up over 700 whp on 91 octane on the stock ecu: http://www.boostaddict.com/content.p...ough-HP-Tuners

        They have it at 720 whp now. You can add a stroker crank if you want more: http://www.acperformance.net/gen5-700rwhp-package