1970 CHEVELLE LS5 UPGRADED TO LS6 NO 68
Engine: 450 CU – 450 HP LS6 400 Turbo Hydra-Matic Transmission
Cowl induction F-41 suspension
Wheel Base: 112 in (2845 mm) Weight: 2845 lbs (1597 kg)
Power Steering Power Brakes
Power top 12 Bolt Rear end
This convertible has had a frame-off, nut and bolt, rotisserie restoration to the highest standards. Due to a crack in the original LS5 block that could not be saved, a LS6 block was used as a replacement under Warranty. This undocumented SS is a desirable color match, the correct factory Cranberry Red and black stripe car is equipped with a 454/450hp 512 block LS6 drivetrain, 291 heads, 3.73 differential ratio, full gauge package, 780 Holley carburetor, complete smog system, Gardiner exhaust with resonators, power roof, AM/FM radio and Strato interior.
Having this much horsepower in this light a car makes this Chevelle LS6 a real screamer on the highway.
Of the 4,475 LS6 Chevelles originally produced, only 137 are currently registered on the National Chevelle LS6 Registry.
1970 Chevelle SS LS6
The big news for the 1970 Chevelle SS was RPO Z15. “The mighty SS454 became available in two flavors, the LS5 with 360hp, and the ground-shaking, earthquake-inducing LS6 with 450hp. One can’t underemphasize the significance of the LS6. There are just a handful of true Mega-Motors from this era: Ford’s 427 Side-Oiler, the 426 Hemi, the Corvettte L88… and the LS6. If the small block was “The Mouse that Roared” (hence the `Mouse Motor), then the big block must be the rat, a mighty big rat, hence the nickname `Rat Motor.’ The LS6… at 450hp was its ultimate manifestation and just in time too, as 1970 turned out to be the peak of the first Great American Muscle Car Era. From 1971 on, rising gas prices, increased pressure from insurance companies, and government mandated smog equipment crippled performance and horsepower dropped steadily, year-by-year well into the 1980’s when technology finally began to catch up. The LS6 was a 1970-only option, gone by `71 when the only 454 was the 360hp LS5 (still a heckava motor).
“In 1970, an LS6 equipped Chevelle SS454 could burn through a quarter- mile in the low 12’s at 112 mph+. The 450 claimed horsepower was actually grossly underestimated by Chevrolet (like all the big blocks of the era) for `political reasons’, and was probably more like 500hp.” As of 2017 there were only 137 registered LS6’s in the National Chevelle LS6 Registry. Truly a rare car!
The 1970 Model Chevelle featured an all new exterior giving it a much more muscular look. The four headlights were flared into the front fascia on either side of a big formal grill separated by the horizontal Chevy Bar. The tail lights were square set in the rear bumper with horizontal chromed strips running across their lenses.
The interiors were also completely revamped for the 1970 models. Whereas the `69 models had a dash board with two large dials with a smaller on in the center. The new models had three large dials flanked by two smaller ones. Also, in the `69 models had a dash pad that stretched side to side in one sweeping surface, the 1970 had a raised portion around the instrument cluster and the heater controls, and a dropped section over the glove box.
The Lang Collection is proud to feature so many of these classic big-block engines powering some of the most beautiful vehicle designs ever built.