1970 Chevrolet Chevelle SS 454 LS5 Big Block, TH400, F-41
Suspension, 12-Bolt Rear Why This Car Is Special The 1970 Chevrolet
Chevelle SS 454 is widely considered the high-water mark of the
muscle car era. It was the first year Chevrolet offered the 454
cubic inch big block in the Chevelle, and it arrived in two states
of tune the LS6, rated at 450 horsepower, and the LS5, rated at 360
horsepower. The LS5 was no consolation prize. It was a
hydraulic-lifter engine built for street durability with serious
torque 500 lb-ft at 3,200 rpm and it was paired with the
Turbo-Hydramatic 400 automatic transmission, one of the strongest
units GM ever put behind a big block. That combination made the
1970 Chevelle SS 454 LS5 a practical, driveable car that could
still run mid-13s in the quarter mile in stock trim. The VIN on
this car decodes to a 1970 Chevrolet Chevelle Sport Coupe built at
the Kansas City, Kansas assembly plant, with a 454 cubic inch V8
and automatic transmission. The model line position and body style
confirm the hardtop coupe configuration the cleanest body style of
the second-generation Chevelle, with its long hood, short deck, and
frameless side glass. The 1970 model year was also the last before
federal emissions and insurance pressure began eroding factory
horsepower ratings. Engineers hadnt yet been forced to detune.
Thats a significant part of why 1970 Chevelle SS 454 values have
held so strong for decades it represents a specific moment that
cannot be replicated. This particular car is presented in red with
a black vinyl top, black hood stripes, and a black interior. It
carries correct SS badges, Rally Wheels with Firestone Wide Oval
tires, and a suspension setup that goes well beyond what most SS
cars left the factory with. Features List - 454 cubic inch LS5 V8
big block engine (sourced from a 1973 GM application) -
Turbo-Hydramatic 400 (TH400) automatic transmission - Turbo-Jet 454
air cleaner - Dual exhaust - F-41 performance suspension - Tubular
A-arms - Front and rear sway bars - Power front disc brakes - Power
steering - GM 12-bolt rear axle with correct boxed control arms -
Aluminum radiator - Sealed breather for cowl induction setup - SS
454 fender badges - SS door panel badges - SS steering wheel -
Rally Wheels with Firestone Wide Oval radial tires - Black hood
stripes - Black vinyl top - Chrome bumpers - Bucket seats - Center
console - Factory tachometer - Custom audio system - Black vinyl
interior - Clean undercarriage Mechanical The heart of this 1970
Chevelle SS 454 is a 454 cubic inch LS5 big block V8 sourced from a
1973 GM application. The 454 family carried through the early 1970s
largely intact, and a correctly built LS5 replacement presents a
reliable, torque-rich powerplant consistent with the original
character of the car. It is topped with a period-correct Turbo-Jet
454 air cleaner the kind of detail that matters to anyone who has
spent time around these cars. Backing the engine is a
Turbo-Hydramatic 400, GMs heavy-duty three-speed automatic that was
originally designed to handle the torque output of big block
engines and high-performance applications. The TH400 was used
behind everything from Chevelle SS 454s to Corvettes to commercial
trucks, and its reputation for durability is well established. The
suspension work on this car deserves close attention. The F-41
suspension was a factory option on the 1970 Chevelle that upgraded
spring rates, shock valving, and front and rear sway bars compared
to the standard setup. This car carries that package and goes
further tubular A-arms replace the factory stamped steel units,
improving geometry and reducing unsprung weight. Front and rear
sway bars are both present, keeping body roll in check under hard
cornering. Power front disc brakes provide modern stopping
confidence, and power steering keeps the car manageable at low
speeds without disconnecting road feel at highway pace. Out back,
the GM 12-bolt WeBe Autos Specializes in Marketing and Advertising
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