1971 AMC Javelin data, information, pictures, VIN ID, technical and performance infoThe 1971 Javelin went through some major design changes, due in large part to declining sales and the fact that the AMX was scrapped for the 1971 model year. The 1971 Javelin grew in length and weight, the grill was new but similar the old models, and the taillights were slightly revised. The fenders and rear quarter panels had humps, which allowed thicker racing tires on the rear.
The interior went through some design changes that were pretty dramatic. The nonreclining vinyl bucket seats were still standard, with pleated vinyl, corduroy, and black or red leather as options. The dash changed significantly. The instrument panel was curved around the driver, and dropped off and disappeared for the passenger, leaving more room for the passenger. A single exterior pinstripe was standard on the base model, and the SST had twin rally stripes in black or white.
AMX Package
For the interior, the AMX package included the dash and door panels being made of smoothed aluminum. On the exterior, the same tail on the 1970 Donohue Javelin was used on the 1971 Javelin AMX. The cowl hood was raised in the middle, and the recessed grille was wire mesh. The front of the hood had a flared T painted on it, with tips running down the top sides of the hood. The final touch was Rally wheels and exterior AMX logos. An extra option on the AMX package was a front spoiler.
The standard engine on the AMX package was the 360 two barrel V8 with single exhaust, with a three speed manual floor shift transmission. The Go Package could be added to the AMX package, giving it a 360 four barrel or 401 V8 engine, dual exhaust, functional cowl induction hood, Rebel Machine wheels, a handling package, Space-Saver spare tire (a spare tire that inflated), Twin –Grip differential, power disk brakes, and Rally-Pac instruments. Although the decked out Javelin with the AMX package and Go Package combined sounds like a real street racing machine, it was hindered by it’s enormous weight. Other Detroit muscle cars were losing speed and power due to heavy weight and new emission rules, so the Javelin AMX could still hold it’s weight against other muscle and pony cars of 1971.
1971 AMC Javelin Engine Types, Specifications, and performance data Engine
The base engine of the 1971 Javelin was the 232 six cylinder, and a new six cylinder was optional, the 258. V8 choices were a 304 two barrel, a 360 two or four barrel, and the new 401 replacing the previous 390. The 401 was the same as the 390, but with a larger stroke for emission reasons, since the new EPA emission rules were coming into affect in 1971. AMC also wanted to get the engine into the 400 range, since the other auto manufacturers all had engines in this range, and AMC was lacking a 400.
A few months into production, the compression ratio was lowered on the 401 due to more emission controls, but the horsepower on the V8’s went up due to new cigar shaped manifolds, which helped the air flow much better. All Javelin models had single exhaust – only the Go package received dual exhaust.
Transmission
The three speed manual column shift was the standard with the standard 232 six cylinder engine. The 258 six cylinder had the options of a floor manual or automatic. The 360 V8 engines had options of a three speed manual floor, or an automatic either on the floor or column. An automatic on the floor or column was available on the 401, as well as a four speed manual floor shifter. This four speed manual was also available on the 360 engines.
Group 19 Options
Group 19 options were available on the 1971 Javelin - read more about these options here. | | | 232 6 Cyl | 258 6 Cyl | 304 V8 | 360 V8 | 360 V8 | 401 V8 | | Horsepower | NA | NA | NA | 245 bhp @
4400 RPM | 285 bhp @
4800 RPM | 330 bhp @
5000 RPM | | Torque | NA | NA | NA | 365 @
2600 RPM | 390 @
3200 RPM | 430 @
3400 RPM | | Performance | NA | NA | NA | NA | NA | NA | | Displacement | 232 ci | 258 ci | 304 ci | 360 ci | 360 ci | 390 ci | | Carburetor | One bl | One bl | One 2bl | One 2bl | One 4bl | One 4bl | | Compression | NA | NA | NA | 8.50:1 | 8.50:1 | 9.50:1 | | Cylinder Bore | NA | NA | NA | 4.08" | 4.08" | 4.17" | | Cylinder Stroke | NA | NA | NA | 4.08" | 4.08" | 3.68" | | # Produced | NA | NA | NA | NA | NA | NA | | Engine Code | NA | NA | NA | NA | NA | NA | | 1971 AMC Javelin Engine Number Identification | | | The engine code is stamped on a tag, located on the panel next to the distributor on 6 cylinder engines. On V8 engines the code is located on the front of the right valve cover.
13 = Year (1971)
2 = Month Built (1 - 12)
W = Engine Model (See table above for engine model code)
17 = Day Built | |
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