From Wikipedia, the free encyclopedia
Jump to navigation Jump to search

Ultramatic was the trademarked name of the Packard Motor Car Company's automatic transmission introduced in 1949 and produced until 1954, at Packard's Detroit, Michigan East Grand Boulevard factory. It was produced thereafter from late 1954, thru 1956 at the new Packard "Utica" Utica, Michigan facility.

1935-1948: Development[edit]

Packard's Ultramatic transmission was the creation of the company's chief engineer Forest McFarland and his engineering team. The magnitude of the accomplishment is illustrated by the fact that it was the only automatic transmission produced solely by an independent automaker with no outside help. Devices like the Ultramatic were being tested and designed by Packard from 1935 on, but none satisfied the perfectionist engineer. The Ultramatic's development was halted as was all automotive work during World War II but resumed in earnest during 1946. Packard, during this period, was suffering in competition with Cadillac thanks to their popular self-shifting Hydra-Matic which was available starting in 1941 and became popular during 1946-1948. Packard at that time only offered an Electromatic Vacuum Clutch option which required manual shifting, and as most vacuum powered shifting and clutching devices, was generally unreliable. In 1949, Packard's 50th anniversary, McFarland's Ultramatic Drive became available as a $199 option. It was first offered only on the De-Luxe Packard Customs.

1949-1954: Ultramatic Drive[edit]

The Ultramatic was a hydraulic torque converter automatic transmission with a two-speed plus reverse epicyclic geartrain and torque converter lockup, called Direct Drive by Packard. The unit was hydraulically controlled with a "valve body," like most automatic transmissions before the advent of electronic control.

The original Ultramatic did not switch automatically between high and low gearing ratios; the driver selected high or low ratio through the column shift lever. The intention was that in normal driving, the high (1:1) ratio would be selected at all times, and the two stage, dual turbine torque converter (actually a total of four turbines were employed) used to reduce gearing for starting off. At a speed of 15–56 mph (24–90 km/h) (depending on rear axle ratio which affected the rate of governor pressure rise), governor pressure overcame the opposing throttle pressure, as determined by carburetor linkage position, causing the Direct Shift Valve to apply the direct drive clutch. This "locked" the torque converter, giving direct mechanical drive from the engine to the rear wheels, eliminating the power-robbing slippage of the torque converter at cruising speeds. On the highway, the Ultramatic delivered the same economy and power as a manual transmission. With the exception of Borg-Warner, major automotive manufacturers did not generally employ a locking torque converter until nearly thirty years later.

The low ratio was available for climbing and descending hills. Using low ratio, the torque converter lockup happened at a slightly lower speed as a result of reduction in the rate of the opposing throttle advancement, eliminating torque converter overheating that plagued early automatic transmissions in such conditions.

Ratio selection was through a column shift, with a lighted selector quadrant on the steering column showing the range. The positions available were Parking, Neutral, High, Low and Reverse (PNHLR).

After its first year, the Ultramatic Drive became available on all Packard models, and was immediately popular. It continued with a Packard program of modifications to improve reliability until 1954, when it underwent a major upgrade to both the power transfer and hydraulic control components reconfigured to give low gear starts automatically in the added Drive range. Many Packard owners had complained of lackluster acceleration, and had discovered that starting off in Low ratio and switching to High while on the move gave a much brisker pickup, but the Ultramatic handled the manual shift from low to high poorly. By 1954, both the Borg-Warner and Chevrolet Powerglide in addition to the aforementioned Hydramatic and Chrysler's new PowerFlite, performed ratio switches automatically while Buick's Dynaflow continued using high gear starts until its demise after the 1963 model year.

1954: Gear-Start Ultramatic Drive[edit]

Packard's new Ultramatic model introduced in the middle of the 1954 model year, was officially called: Gear-Start Ultramatic Drive, offering a new selector sequence on the column shift: 'D', for Drive, placed in between High, now represented with a simple dot, and Low (PN•DLR). In this new DRIVE range, it would use the low ratio and torque converter to start off, switching to the high ratio and ultimately to direct drive as the car accelerated; effectively automating what many Packard drivers had been doing manually with the older Ultramatic Drive.

During 1954, and into 1955, Packard Motor Car Company, later Studebaker-Packard; went on a modernization spree of its aging facilities. It was decided by Packard President James J. Nance (1952–1956), and his manufacturing Vice-President, Ray Powers (1954–1956), ; that their East Grand Boulevard complex was no longer able, due to age and deterioration of that facility, to be further modified to handle the expected increase in production for the company in 1955 and beyond. A new facility was therefore planned and built for use by Packard as a transmission and engine facility in Utica, Michigan. This facility was actually built on the N/E corner of Packard Proving Ground Complex on Van Dyke Rd. The facility was sided by both 22 Mile Rd, and Mound. After completion, Packard moved the machinery, and production line for the Ultramatic, as well as its yet to be introduced V-8 engine during the summer and early fall of 1954. This facility therefore produced all 1954 "Gear-Start", 1955 "Twin-Ultramatic", and 1956 Ultramatic derivatives thru the fall of 1956 when this facility was deactivated and sold as part of a corporate buyout deal with the Curtiss-Wright Company.

1955: Twin-Ultramatic Drive[edit]

In 1955, Packard switched to a new V8 engine from its traditional straight-8, and launched a new evolution of its automatic transmission at the same time, the Twin-Ultramatic Drive. McFarland, his assistant John DeLorean, and their team were not satisfied with the improved pick-up of the Gear-Start Ultramatic, and modified the angle of the converter "pump" to allow a higher stall speed thus increasing the torque multiplication better suited to the torque curve of the new V8 engines. In addition, a slightly higher stall converter was produced for the sportier Caribbean model due to its use of two four-barrel carburetors. The Gear-Start's ability to start in low range and switch to high automatically was retained, but the selector quadrant indicator was altered and PN•DLR became PN'D'LR to better reflect the dual drive range capability of this transmission, all the better to compete with the Dual-Range Hydra-Matic. Functionality was the same; the first Drive position, to left of the 'D equated to High on the Gear-Start Ultramatic, while the second, situated to the right of D', was equivalent to the Drive position on the Gear-Start, giving the driver the option of starting in either High or Low with automatic upshifts, ending with Direct Drive engagement of the torque converter, thus the Twin- designation referred to this dual Drive capability.

The Twin-Ultramatic suffered many "teething problems" when introduced, which did significant damage to Packard's reputation for quality and reliability. However, over the years it's become clear that Packard's initial Twin Ultramatic problems were not out of line with any other new contemporary designs and the engineering department's program of running changes and updates greatly increased its functionality, excepting driver abuse through excessive application of the higher torque V8's power potential. Lower-powered models in the Packard range and those sold to American Motors suffered fewer problems. Exacerbating the difficulties, Packard was hemorrhaging experienced dealerships, which meant that many 1955 Packards were not being maintained to the previous high standards.

1956: Ultramatic and Touchbutton Ultramatic[edit]

The column-mounted push button selector box for the Touchbutton Ultramatic in a 1956 Caribbean.

The year 1956 saw a further development of the transmission in a major redesign of a majority of all individual transmission components, including re-calibration of the shift pattern producing an improvement of shift control. In addition there was a nomenclature change which reverted to the plain name of Ultramatic Drive. This year also saw the selector quadrant undergo yet another change to become: PNHDLR in order to further clarify the two drive ranges and accommodate the soon to be released push button control pod. In addition General Motors threatened lawsuits regarding dual "Drive" ranges, because of their "Dual-Range Hydra-Matic Drive" of 1953.

In addition to the numerous upgrading, small but important changes to shift linkages, better build quality, and stricter tolerances restored Packard levels of reliability to the 1956 transmission. Also new that year was an aluminum transmission casing, making the Ultramatic 90 lb (41 kg) lighter than its competition, including the Chrysler pushbutton PowerFlite. Future transmissions from all manufacturers were to follow Packard's lead.

Packard decided to offer a "Pushbutton Transmission Control" for the 1956 series called "Touch Button Ultramatic". This was standard on the 1956 Caribbean, Patrician, and was a $52 option on all Clipper and other Packard models. The mechanism was built by Auto-Lite, a major Packard supplier. A thick arm off the side of the steering column extended to the driver's right about 6 in (15 cm), replacing the regular shift lever, with a rectangular pod with six buttons for selection. The bottom row of buttons offered Park, Reverse and Drive, while the top row contained the Neutral, Low and High buttons.

The system was electrically actuated, rather than Chrysler's very reliable mechanical pushbuttons, and was troublesome from the beginning. The electric shift motor, essentially a modified starter motor, proved insufficient to move the car out of Park on a steep hill, and would pop the circuit breaker; electrical contact problems, wiring problems and other issues were prevalent even when new, and worsened with age. When the contract was cancelled after Packard production ceased, Auto-Lite destroyed the tooling, making spare parts for the system unobtainable.

Although true Packard production ceased after the 1956 model year, Studebaker-Packard Corporation continued to have service obligations to Packard owners, and the 1955 Twin-Ultramatic and the 1956 Touchbutton Ultramatic were a recurring problem.

Historical perspective[edit]

Packard's successful development of its own automatic transmission was unique: no other independent (non-Big Three) automaker managed such a feat. The company's worsening financial situation throughout the 1950s, however, prevented them from keeping up with the transmission development of the larger companies. Packard's attempts to update the Ultramatic were not sufficiently tested to iron out the problems, and those problems damaged the company's reputation. Some automotive historians[who?] have argued that Packard should have dropped the Ultramatic after 1954, and purchased a more modern transmission design from another manufacturer but such opinions fail to consider Packard's use of a locking torque converter was not only up to date but ahead of its time. In addition, the only truly new modern transmission (which did not appear until 1956) was the Dual Coupling Hydra-Matic but that had serious teething problems of its own. In retrospect Packard's Twin Ultramatic's most serious design flaw was the low to high shift transition, during which a poorly timed high clutch application and low band release over much of the allowable upshift range resulted in many premature high clutch failures. This situation resulted in an unusual sensitivity to individual driving habits determining useful clutch life. Therefore, while the transmission was designed to physically accept a high torque V8, its control system needed further development.

Surviving Ultramatic transmissions[edit]

Packard enthusiasts have kept many units in service since the company's demise. Better modern transmission fluids, aftermarket transmission coolers, and improved rebuild parts combine to improve the reliability of the factory originals.


  • Kimes, Beverly Rae (ed.) (1978). Packard, A History Of The Motorcar And The Company. Automobile Quarterly Publications. ISBN 0-9711468-1-0.
  • Clarke, R.M. (1958). Packard Gold Portfolio 1946-1958. Motorbooks International. ISBN 1-870642-19-8.
  • Ward, James A (1997). The Fall Of The Packard Motor Car Company. Stanford University Press. ISBN 0-8047-3165-9.
  • Adler, Dennis (2004). Packard. Motorbooks International. ISBN 0-7603-1928-6.
  • Wards Automotive Yearbook, 1955 & 1956
  • Automotive News, 1949–1958
  • Studebaker National Museum, South Bend, Indiana
  • Packard National Museum, Warren, Ohio
  • Packard Advertisements 1955-1956;

External links[edit]

  • Ultramatic Dynamics - Packard Ultramatic rebuilder, parts, images and information.
  • The Packard V8 Club - The Packard V8 Club specializes in keeping 1955-1956 Packard Powered automobiles on the road.
  • Packard Info - Free online library of Packard Information.