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The 1969 Impala also offered a new GM-designed variable-ratio power steering unit as optional equipment along with a seldom-ordered "Liquid Tire Chain" option, which was a vacuum activated button that would spray ice melt on the rear tires [7] (UPC option code is "V75"). The standard engine was enlarged to a 235 hp (175 kW) 327 cubic-inch V8 ...
Muncie SM420 transmission — 4-speed manual used up to 1967, very similar to sm 465 except small changes to gear ratios and location of reverse. New Process Gear NP435 - 4-speed longitudinal transmission used in a select handful of 67-72 GM pickups
The Dana 70 axle only came with 5.13:1, 4.88,5.31 [citation needed] gear ratios and had a GAWR of [citation needed] these axles were rated at 7-9klbs as seen on 5500 door stickers. They differ greatly from previous Dana 70 front axles, some of the major differences being the use of 1550 Universal Joints and being a high pinion, reverse cut axle.
Identification between the two can be made by examining the hub: the protrusion of the hub through the center of the wheel denotes the preferred 10.5-inch full-floating rear axle. While the 9.5-inch rear end exhibits its own durability, it is generally considered less favorable for high-torque applications. The 9.5-inch C-clip rear differential ...
The Chevrolet Impala (/ ɪ m ˈ p æ l ə,-ˈ p ɑː l ə /) is a full-size car that was built by Chevrolet for model years 1958 to 1985, 1994 to 1996, and 2000 to 2020. The Impala was Chevrolet's popular flagship passenger car and was among the better-selling American-made automobiles in the United States.
Car and Driver tested a 1977 Chevrolet Impala with the 350 engine and 3.08:1 axle running a 9.6 second 0–60 mph time and obtaining a 117 mph (188 km/h) top speed. The 350 was available with a 2.56:1 axle ratio and a 3.08 axle ratio which may explain the difference in performance times.
The police package (9C1) B-body cars featured a First Gear Block Out (FGBO) Plate on the transmission housing to prevent drivetrain damage. The shift point for first to second gear is about 43 MPH (69 km/h) while second to third gear shift point is about 83 MPH (134 km/h) assuming a 3.08:1 differential and a 5,500 RPM engine speed limit.
Externally, it was a rebadged Chevrolet Impala (1983-84 models (and 1982 in Canada) had the Impala rear taillight panel fitted with Pontiac-spec taillight lenses, whereas the nose was borrowed from the Chevrolet Caprice fitted with a Pontiac grille). The 1985 and 1986 models resumed use of the rear-end styling from the 1980 to 1981 Bonneville.