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1961 CHEVROLET IMPALA
CAR LIFE ROAD TEST
(Published in "Car Life",
March 1961.)
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| When a car accelerates
so smoothly that the stopwatch must be consulted before you realize that
you've been driving a sparkling performer, it's a triumph of
contemporary American car design. |
The
1961 Chevrolet Impala tested for this month's issue is such a car.
Equipped with Turboglide transmission in combination with the 348 cubic
inch V-8 engine, this four-door hardtop (Chevy terminology: Sport Sedan)
was a model of inconspicuous pep. Although rated at only 250 horsepower,
the single four-barrel carburetor version of the 348 engine put out well
enough to equal the 0-40 mph performance of the 290 bhp Ford Galaxie we
tested last month. From that speed on up, the additional power of the
Ford resulted in slightly better acceleration; but, in our opinion, not
enough better to cause anyone to choose between the two on that basis
alone.
Frankly, we were surprised at the performance of our Chevrolet test car.
Never enthusiastic over the torque converter types of automatic
transmissions, our personal preference has always run toward the type
best exemplified by the Hydramatic. Yet, the smoothness of the
Turboglide immediately commanded respect. This respect was tempered with
regret that it must be bought at the price of performance-but that was
before the stopwatch revealed that in addition to its smoothness,
Turboglide was no slouch at acceleration, either. |
The figures in the
accompanying data panel tell the performance story, but we'd like to add
one footnote: so efficient was the Turboglide at the job of torque
multiplication that accelerating the car from a standstill became a
problem. Several tries had to be made before a technique avoiding
excessive wheelspin was evolved. Obviously, the Positraction
limited-slip differential option would be most desirable with this
engine-trans combo if optimum stand-start acceleration were the goal.
Fuss-less performance was not the only surprise the '61 Chevy had in
store for us-for the first time in many a moon, one of our testers, an
inveterate "do-it-yourselfer" who abhors all powerboost
accessories, did not complain about the power brakes. In fact, it was
not until we reached the stage of our test routine where under-hood
component accessibility is checked out that he spied the mechanism
concerned and realized that for once he had experienced no problems in
adapting from conventional braking.
The power steering was, as usual, devoid of road feel, a failing that's
apparently the nature of the beast, regardless of make or model. For
those who park more than they turnpike, it's a desirable option, but for
anyone intending to exploit this car's high-speed cruising ability, it
may well be a good one to skip.
We can't say too much about the handling qualities of this car, simply
because the aforementioned lack of road feel inherent in the power
steering prevents one from really knowing how close you actually are to
"losing it" in a turn until you have - lost it, that is.
Having an aversion to returning test cars to their point of origin in
bent-up, burnt-out condition, we make it a practice never to drive them
"over our head." With the Chevrolet, you can go fast enough
without exceeding this margin. Your own intestinal fortitude (or lack of
it) becomes the limiting factor long before the twistiness of the road.
For a car designed to haul people, not to win races, that should be
enough. |
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For those who want more in
the way of a "handler's handler" than the Chevrolet offers in
its strictly stock form, a switch to the 6-inch-wide rim wheels that are
standard on the 9-passenger station wagons should provide additional
resistance to tire roll-under, with attendant benefits in smoother
cornering, and audible reduction in tire squeal.
Brakes on the '61 Chevrolet are effective enough in comparison with what
competitors are offering |
| to need no further comment, but a feature
of the Turboglide transmission designed to make the brakes' job easier
certainly does. We're referring to the Grade Retarder, a function of the
Turboglide put into effect by simply moving the selector lever to a
position on the quadrant marked "G." When this is done, the
Turboglide attempts (as much as its fluid coupling will allow) to
accelerate the engine speed up to a value corresponding to 2.67 times
driveshaft speed. The retarding effect of this move caused us to refer
to that position on the selector quadrant as "G for Grab" for
the remainder of the test. The Tapley meter recorded a deceleration
reading of 300 when "G" was engaged and, although we feel that
a greater safety factor (particularly in mountain driving) would be
attained with a device giving at least twice this figure, it is
definitely a step in the right direction. |
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| The Turboglide
transmission is just one of a total of five options available to the
Chevrolet purchaser, with the other choices being 3-speed manual,
3-speed manual with overdrive, 4-speed manual, and of course the
perennial Powerglide. There are some interesting points about this
profusion of options: the 4-speed is available only with the 348 cubic
inch engines, which need its closely-spaced ratios far less than the 283
cubic inch engine; and the Turboglide is offered with engines only up to
280 bhp with a "Heavy Duty Powerglide" being the automatic
trans option in the higher-powered versions. |
A transmission modification
for '61 that makes a lot of sense is the changing of ratios in the
4-speed transmissions for passenger car installations. Instead of the
Corvette-bred 2.2:1 first, 1.66:1 second, and 1.31:1 third, these boxes
will have a 2.54:1 first, run 1.92:1 in second, and carry a 1.51:1 third
gear ratio.
Inside, the '61 Chevrolet is as imposing as ever, with this particular
series (Impala) being the most luxurious of the entire line. Addition of
a 2-door sedan to the Impala series this year gives just this one series
of Chevrolets full model coverage, almost like a make unto itself. This
is interesting sales strategy when you take into account the fact that
Pontiac's President Knudsen was quoted not |
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| so long ago as saying their most popular
car was the "economy priced" Catalina series. Perhaps
Chevrolet is reaching up a notch with this expansion of the Impala line. |
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Instruments are now contained
within a console that may be removed as a single unit for maintenance,
although retaining the option of individual instrument removal in
instances where that is more convenient. Aside from theoretically saving
the car owner some labor charges (on an actual time basis) when such
work is necessary, there's little worthy of comment about this. We'd
still prefer an ammeter and an oil pressure gauge instead of colored
lights, console or not.
Quality of fit, finish and general workmanship still seem to be
something that Chevrolet has been able to reconcile to mass production
better |
| than many of its competitors. This, along
with the "big-car feel" that always accompanies the
triumvirate of power steering, power brakes, and automatic transmission,
gave the impression that, unless you noticed the nameplate before
entering, you could just as easily be riding in one of GM's more
expensive offerings instead of one of the least. We're willing to bet
that very few average car-owners could walk down the assembly lines at
Cadillac and Chevrolet knowing which car was which until they got to the
point where the bodies were installed. Without styling clues, it could
be difficult for the layman. |
| Of primary interest only to
the ladies, to remain competitive, color-wise, in the styling
competition, Chevrolet has a total of 15 colors available for '61, of
which only five (silver, red, gray, black, white) are carryovers from
'60. A feature that's sure to be appreciated by both sexes is the
addition of an ignition switch key position marked ACC for accessory
operation with the engine shut down. |
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Aside from minor niceties
such as these and the others already enumerated, Chevrolet for '61
continues along the same lines as have the many preceding models since
days of yore - basic transportation if you so desire, yet with
sufficient options available to offer a car fulfilling the American
dream of luxury on wheels to an extent that shamelessly competes with
its higher priced cousins. |
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