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1970 Chevrolet Chevelle SS 454 — LS5 Big Block, F-41 Suspension, Clean Undercarriage Why This Car Is Special The 1970 Chevrolet Chevelle SS 454 stands at the top of the muscle car hierarchy for one simple reason: it was the most powerful production Chevelle ever built. Chevrolet introduced the 454 cubic inch big block for the 1970 model year specifically to answer the demand for more displacement, and the result was a car that Car and Driver clocked in the mid-13-second range in the quarter mile right off the showroom floor. The SS package in 1970 was not just a badge — it was a separate option that brought a specific suspension tune, unique exterior trim, and engine choices that no other Chevelle buyer could order. The VIN on this car decodes to a 1970 Chevrolet Chevelle hardtop coupe built at the Kansas City assembly plant, which was one of several facilities producing the A-body that year. The model year 1970 represented a high-water mark for the entire Chevelle SS program. Chevrolet sold roughly 53,599 SS-optioned Chevelles that model year, and of those, only around 4,475 were equipped with the LS5 454 engine. The LS5 was the more streetable of the two 454 options — rated at 360 horsepower from the factory — while its sibling, the LS6, was the all-out race version rated at 450 horsepower. The LS5 gave buyers a genuine big block experience that was somewhat more manageable on the street without sacrificing the fundamental character of the engine. This car has been built with a clear philosophy: keep the correct SS appearance and identity intact while upgrading the driveline and chassis to make it a reliable, confidence-inspiring car to actually drive. The 454 under the cowl induction hood is a 1973 GM LS5 unit — a correct-family engine swap that keeps the displacement and the character of the car true to its original specification. The suspension and braking upgrades elevate it well beyond what the factory delivered in 1970 without turning it into something unrecognizable. For a buyer who wants a 1970 Chevelle SS 454 that looks the part, sounds the part, and actually performs on the road rather than sitting behind velvet rope at a show, this is a well-considered build. Features List - LS5 454 cubic inch big block V8 (1973 GM unit) - Turbo-Jet 454 air cleaner with correct SS 454 decal - TH400 3-speed automatic transmission - GM 12-bolt rear axle with correct boxed control arms - F-41 performance suspension - Tubular front A-arms - Front and rear sway bars - Power front disc brakes - Power steering - Cowl induction hood with sealed breather - Dual exhaust with chrome tips - Aluminum radiator - Correct SS Rally wheels with radial tires - SS 454 fender badges - Black hood stripes - Chrome front and rear bumpers - SS steering wheel - Bucket seats with console - Factory tachometer - Custom audio system (installed behind factory-appearance radio opening) - Black vinyl interior - Clean undercarriage Mechanical The engine in this 1970 Chevelle SS 454 is a 1973 GM LS5 unit — a same-family, correct-displacement swap that keeps the car true to its SS 454 identity. The LS5 designation covers the hydraulic-lifter, 360-horsepower version of the 454, which Chevrolet continued producing into the early 1970s with only incremental changes. Using a 1973 block in a 1970 body is a common and well-accepted approach among Chevelle enthusiasts because the architecture is identical and the later engine often benefits from slightly updated casting quality. The Turbo-Jet 454 air cleaner sits on top, wearing the correct SS 454 decal that was original to these cars. The cowl induction hood feeds outside air directly to the carburetor through a sealed breather system — this setup was factory-available on the 1970 Chevelle SS and works by capturing the high-pressure air that builds at the base of the windshield at speed, feeding cooler, denser air into the engine than it would otherwise receive through an underhood scoop. Behind
Body Style: Coupe
Condition: Used
Certified: 0

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