Automotive Engineering - November/December 2021 - 9

TECHNOLOGY REPORT
Ready to rip, LT6 delivers a remarkable 670 net (per SAE
Standard J1349) horsepower at 8400 rpm. The redline is
8600 rpm, while the torque curve peaks with 460 lb-ft (623
Nm) at 6300 rpm. The super-short stroke minimizes the
crank's rotating inertia, expediting the rush to the redline.
Though executive chief engineer Tadge Juechter insists the
Z06 is not a " numbers " car - its official GM-listed top speed is
actually slightly slower than that of the conventional Stingray
- he does tout a 2.6-second 0-60 mph time.
GM's all-new LT6 is the
first DOHC, 32-valve V8 in a
production Corvette since the
problematic 1990 LT5 that was
developed jointly by Chevrolet and
Lotus and assembled by Mercury Marine.
top of each cylinder, according to a GM Propulsion engineer
familiar with the LT6 who spoke privately with SAE Media. The
LT6's 3.150-in (80-mm) stroke, originally selected to duck under
the international racing displacement limit, yields a net displacement
of 5.5L (333 cu in.).
New Z07 chassis for trackaholics
A superlative chassis is an essential ally in this performance
pursuit. While the C8 aluminum spaceframe, control-arm suspensions
and magnetic-adjustable dampers are essentially
carryover, every variable has been optimized to collaborate
with the more aggressive engine and fresh tire and brake
specifications. Supplementing the base Z06 hardware, there's
a new Z07 option aimed at hard-core track use.
The Z07 package includes 20x10-in. front wheels wrapped
with 275/30ZR-20 tires and 21x13-in. rear wheels fitted with
345/25ZR-21 rubber. Base tires are Michelin Pilot Sport four
season run-flat designs while the Z07 package includes stickier
Sport Cup summer radials. Skid pad tests revealed that
these tires yield 1.22g of lateral grip, according to Chevrolet.
ICU
HV Connector
(Integrated
Central control Unit)
BFA
HV/LV Wiring Harness
Built-in Cam
Battery Disconnect Unit
(Busbar Frame Assembly)
HV Junction
Block
HV Charging
Coupler
AUTOMOTIVE ENGINEERING
Free Info at http://info.hotims.com/79446-705
November/December 2021 9
CHEVROLET

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Automotive Engineering - November/December 2021

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