1970 Chevrolet Corvette Stingray LS5 454 �€" Numbers-Correct Big
Block with NCRS Documentation Why This Car Is Special The 1970
Chevrolet Corvette Stingray is widely regarded as the high-water
mark of the C3 generation, and for good reason. It was the last
model year before emissions regulations and insurance pressures
began pulling horsepower ratings down across the industry.
Nineteen-seventy also happened to be a shortened production year
�€" the Bowling Green assembly line ran behind schedule, and total
Corvette output for the model year came in at just 17,316 units,
making 1970 one of the lowest-production Corvette years of the
entire C3 run. Within that already-limited pool, the LS5 454 was a
significant option. Chevrolet offered two big block choices in
1970: the LS5 at 390 horsepower and the top-shelf LS7 at a
factory-rated 460 horsepower. The LS7 was listed in early
literature but was never actually put into production for street
cars that year, which means the LS5 was effectively the most
powerful engine a buyer could order in a 1970 Corvette. Only 4,473
buyers checked that box. This is one of them. The VIN on this car
decodes to a 1970 Corvette coupe built at the St. Louis assembly
plant, with the 'S' engine code confirming the factory LS5 454
installation. The exterior color is documented under paint code 974
�€" Monza Red �€" and the interior carries trim code 407,
confirming the factory red leather bucket seat interior. Both codes
match what you see on the car today, which matters considerably to
NCRS judges and serious collectors alike. This car is an active
NCRS member vehicle, which means it has been submitted to the
scrutiny of the National Corvette Restorers Society �€" an
organization whose judging standards are among the most demanding
in the hobby. The odometer reads just over 78,000 miles. Features
List - 454 cubic inch / 390 horsepower LS5 Big Block V8, 4-barrel
carburetor - 4-speed manual transmission - Positraction
limited-slip rear end - 4-wheel disc brakes - Power brakes - Power
steering - Factory air conditioning - Removable T-Tops -
Tilt-telescopic steering column - AM/FM radio - Edelbrock chrome
valve covers and air cleaner - MSD ignition - Chrome side exhaust -
Chrome luggage rack - Correct paint code 974 (Monza Red) exterior -
Correct trim code 407 red leather interior - Wood-grain door panel
trim inserts - NCRS member car Mechanical The heart of this 1970
Chevrolet Corvette Stingray is the LS5 454 cubic inch big block,
factory-rated at 390 horsepower and 500 lb-ft of torque at a
10.25:1 compression ratio �€" figures confirmed by the engine data
plate visible on the center console. The LS5 used rectangular-port
cylinder heads, a hydraulic camshaft, and a single Rochester
Quadrajet four-barrel carburetor. It was a torque-heavy,
street-friendly package that could be driven daily while still
delivering serious performance. The 500 lb-ft torque figure is what
makes these cars feel so different from small block Corvettes of
the same era �€" the power comes in low and stays flat across a
wide rpm range. Behind the engine sits a 4-speed manual
transmission, the correct and desirable gearbox pairing for a car
of this specification. The Positraction rear end ensures both rear
wheels put power to the ground consistently, which is especially
relevant given the torque output of the 454. Stopping power comes
from 4-wheel disc brakes �€" a feature that set the Corvette apart
from nearly every other American production car of its time. The
factory equipped these with power assist, and the combination of
disc brakes at all four corners with a big block engine was a
genuinely capable performance package by the standards of 1970.
Under the hood, Edelbrock chrome valve covers and a matching chrome
Edelbrock air cleaner have been fitted, giving the engine bay a
clean, finished appearance without straying into outlandish
territory. An MSD ignition system has also been installed, which
improves spark c
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