1971 AMC Hornet SC/360: The Insurance-Friendly Muscle Car That Buyers Passed By

American Motors introduced the Hornet SC/360 as “a sensible alternative to the money-squeezing, insurance-strangling muscle cars of America.” That line, quoted by Old Cars Weekly, sums up the car's pitch. By 1971 the big-engine intermediates had become expensive to insure, and AMC offered a compact with a 360 V8 as the way around the problem. The sales effort was small. Old Cars Weekly quotes the observation that AMC ran a single advertisement for the car, in Motor Trend: “That's all the advertising they did for them.” AMC had a clear argument for the car and gave it very little exposure.¹

The insurance argument had real substance. Old Cars Weekly reports that the SC/360 avoided the 25 percent surcharge insurers were adding to other muscle cars, although it still drew some surcharges once insurers noticed its performance. That was the business case: a small car with a moderate-displacement V8 and a modest price, pitched to buyers who could not insure a big-engine supercar. AMC's own hopes were large. Old Cars Weekly says the company expected to build 4,000 and suggested that 10,000 sales might be possible. The SC/360 registry kept by Planet Houston AMX records the plan as 10,000. Both figures are stated plans, not production.^1,2

The SC/360 was the third car in a short series. In 1969 AMC and Hurst had put a 315-horsepower 390 into the Rambler American to make the SC/Rambler. In 1970 the Rebel Machine carried a 340-horsepower 390 in the midsize Rebel. For 1971 AMC moved to a smaller engine in its newer compact. AMC's 1971 literature identifies the SC/360 as a Hornet two-door sedan with the 360 V8, an available four-barrel and a Hurst-shifted four-speed. The registry gives it body number 7106-1, a factory price of $2,663 and a shipping weight of 3,300 pounds. The Hornet rode a 108-inch wheelbase.^2,1

The base SC/360 was relatively mild. Old Cars Weekly lists the standard two-barrel 360 at 245 horsepower, a gross-era advertised figure, with a three-speed all-synchromesh manual, D70x14 Polyglas tires, styled wheels, rally stripes and reclining seats, for $2,663. The $199 Go Package made it a muscle car. It added a four-barrel carburetor and a 285-horsepower rating, Ram Air induction through a flat-black hood scoop, dual exhaust, a handling package, a large tachometer and raised-white-letter tires. Old Cars Weekly prices a four-speed with Hurst shifter, or an automatic, at $237.85. The registry separately prices the automatic at $200 with a floor shift or $238 on the column.^1,2

The rest of the registry's price list reads like any compact of the time: Twin-Grip at $43, power front disc brakes at $84, power steering at $111, air conditioning at $399 and a Rim-Blow steering wheel at $37. The paint list runs to 21 colors, from Snow White and Canary Yellow to Wild Plum and Baja Bronze. The registry says black was a $56 extra-cost color on the SC/360. Interiors came in black, blue, green or red, in vinyl, fabric or a Serape pattern. The registry lists no production counts by color or trim. So a buyer could order an SC/360 as a flashy option-laden car or as a plain one.²

Buyers ordered 784 cars, the figure given by both the registry and Old Cars Weekly. That is less than a fifth of the 4,000 AMC expected and under 8 percent of the 10,000 it hoped for. The registry's breakdown shows who bought them. Of the 784, 578 had the four-barrel Go Package engine, about 74 percent, and 206 had the two-barrel. By transmission, 436 were automatics (187 two-barrel and 249 four-barrel), 306 were four-barrel four-speeds and only 42 were three-speeds. Wikipedia gives 304 rather than 306 four-speeds, but the registry's 306 is the figure that makes its own rows add up to 784, so it leads.^2,1,3

The transmission choices show how the SC/360 differed from AMC's 1969 compact. The SC/Rambler had come only with a close-ratio four-speed, according to AMC's foldout. The SC/360 buyer had a choice, and most chose an automatic: 436 of 784 cars, about 56 percent, by the registry's rows. The Hurst four-speed went into 306 cars, about 39 percent, and in the registry's rows it appears only with the four-barrel engine. The standard three-speed went into just 42. Even the two-barrel cars were mostly automatics, 187 of 206. The SC/360 was sold largely to buyers who wanted a quick car without a clutch pedal.²

Even those counts cannot identify an individual car. The registry says the only mark that separates an SC/360 from any other Hornet is a 1 in the sixth VIN digit. Neither Ram Air nor the Go Package appears in the VIN or on the door tag. The registry ties the four-barrel to the Go Package but gives no separate count of Go Package cars. It also says that not every SC/360 had Ram Air, so a four-barrel car cannot be assumed to have the working scoop. The registry's cars show Kenosha builds, from a model year that ran from 1 August 1970 to 30 July 1971. The SC/360 reached showrooms in October 1970.²

The car performed as promised. Hot Rod's December 1970 issue tested a virtually stock SC/360 with an automatic. As reported by Old Cars Weekly, it ran the quarter-mile in 14.80 seconds at 94.63 mph. The secondary report does not say which engine the car had or what axle ratio, and the figures belong to that one car. Can-Am driver Steve Diulo then drove it on a road-racing course. He found the steering slow but summed the car up as “really a lotta car for the money!” For a compact with a $2,663 base price, a quarter-mile under 15 seconds with an automatic was a strong result, even if the insurers were starting to notice.¹

It still lasted one year. Old Cars Weekly attributes the car's weak prospects to the insurance industry's crackdown, the same problem the car had been designed around. Ate Up With Motor notes the 784 built against an anticipated 10,000. With the SC/360, AMC's run of limited-production performance cars ended: the SC/Rambler in 1969, the Rebel Machine in 1970 and the SC/360 in 1971. The registry estimates that about 100 survive worldwide, as reported by Old Cars Weekly. The SC/360 was the most practical of the three by its own pitch, a muscle car sold on its insurance bill, and it ended the series with the smallest production run.^1,4,2