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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 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 ...
Most of the V8/Powerglide transmissions came with the 1.76 gear set. One notable exception was the export version of the transmission, which offered only the 1.82 ratio and was used by Holden in Australia behind their Australian built 6-cylinder and V8 engines. Holden vehicles fitted with Chevrolet V8 engines used the 1.76 ratio gear-set.
It was the most popular car in the U.S. in the 1960s and early 1970s, which, during its production, included the Biscayne, Bel Air, and Impala. Introduced in mid-1965 as a luxury trim package for the Impala four-door hardtop, Chevrolet offered a full line of Caprice models for the 1966 and subsequent model years, including a "formal hardtop ...
Roto's disadvantage was the 2-3 range or 1-2 gear change because it is not only a huge ratio jump from 2-3 range or 1-2 shift from 2.93 to 1.56, but also there is no fluid slippage in the coupling because the coupling drains (four-tenths of a second) to engage or apply the front clutch and so the trans goes to full mechanical connection.
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.
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.
For 1991 GM introduced the 4T60-E which was a 4T60 with electronic controls, first seen on the new Buick Park Avenue.One benefit was that the cruise control was integrated into the gearbox' electronic control module, improving the ability to maintain a set speed while avoiding needless shifting, thus lowering fuel consumption and noise levels. [1]