[PIC] First Look at the Torque and Power of the 2023 Corvette Z06’s LT6 V8 Engine

By
Keith Cornett
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4
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[PIC] First Look at the Torque and Power of the 2023 Corvette Z06's LT6 V8 Engine

Photo Credit: Chevrolet


On Thursday, we sat through a fantastic closed-door virtual presentation with members of GM’s small block engineers that included Small Block Chief Engineer Jordan Lee and Corvette Executive Chief Engineer Tadge Juechter. Over the course of the three-hour seminar, we were provided an extensive background seminar on the 2023 Corvette Z06’s LT6 V8 engine.

The small block engineers named the C8 Z06’s engine as project “Gemini” and its clean-sheet design was started back in 2014. Assistant Chief Engineer of Small Blocks Dustin Gardner says there were a number of goals outlined from the beginning, first being the engine would be naturally aspirated, and second, it must put out equal or more power than the previous C7 Z06’s LT4 which stood at 650-hp.

The very first proof-of-concept motor was completed in September 2015 and was followed by refined prototype builds available to engineers in February 2017. Gardner says right from the get-go, they knew they had 650 horsepower. It was over the course of the development that Gardner says everyone on team stepped up to take it to the next level. Between the team’s engineering passion and GM’s engineering prowess, eventually, they were able to increase the power to its final SAE rated 670 horsepower.

Torque and Power of the 2023 Corvette Z06's LT6 V8 Engine


There was so much information presented and as it was very technical in nature so we’ll be looking at breaking down the information presented into easily consumable content. One of the first things we did want to share is this first look at the Torque and Power of the LT6 V8 which was revealed for the first time in the presentation.

Small Block Chief Engineer Jordan Lee called it a “very broad, flat torque curve that expands to 8600 RPM.” Regarding the chart, Jordan says that at low engine speed, they aren’t really able to tune it, so what you are seeing is the result of the 5.5-liter displacement. It then starts to move very effectively at 3000 RPM and above and with the LT6’s multi-variable intake manifolds, they are able to keep that torque curve relatively flat across the power band from 3500 RPM to 8600 RPM.

First Look at the Torque and Power of the 2023 Corvette Z06's LT6 V8 Engine


We’ll have more from the LT6 Deep Dive in the days ahead.


Source:
Chevrolet

Related:
The Secret to the 2023 Corvette Z06’s Torque Comes From a German Physicist Born 200 Years Ago
Might We See Different Colors for the LT6’s Twin Intake Manifolds on the 2023 Corvette Z06?
[VIDEO] Engineering Explained Takes a Deep Dive into the C8 Corvette Z06’s LT6 Engine

 



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4 COMMENTS

  1. Lot of moving parts and electronic gizmos to break in that beast. I would wait a couple of years to get one

  2. The Corvette LT6 5.5L V8 N/A engine is a real genius design! The flat torque curve is awesome for a 5.5L V8 N/A engine. The power curve (HP) is steeper and spot on for a N/A V8! Congratulations!

    CONCLUSION:
    Why a V8 BiTurbo engine when the example of the LT6 5.5L V8 N/A engine ingenious designers, engine builders, developers and testers represent such a positive result!
    The LT6 V8 N/A engine has to be the “Engine of the Year” engine in all areas in 2022/2023! Ferrari, who can no longer construct and build a V8 N/A, also have to admit defeat here.

  4. Last thing you want is peak tq down low. Thise comments about a flat torque curve is bad has no idea about engines. Broad flat torque that stays above 400 from around 3k rpm to redline. Torque is acceleration and hp is speed. Way better torque curve than the voodoo mushtang engine.

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