The AMX California 500 Special was powered by AMC's 390-cid V8 engine, which produced 315 hp and 425 lb-ft of torque. The AMC AMX was introduced in 1968 as a response to the demand for lightweight ...

The optional plant was the biggest engine from AMC for that year, the ‘AMX 390’, which came onto the stage with the model’s introduction in 1968. However, in 1970, the four-barrel bog-block ...

Fine, AMC developed a swansong version of the AMX 390, dubbed the SS, or Super Stock. It wasn't road-legal, but it didn't need to be, as it was developed with the sole purpose of laying down ...

Shared with the AMC, the 390-cubic-inch (6.4-liter) V8 sent 315 horsepower and 425 pound-feet (576 Nm) of torque to the rear wheels. Lighter than the usual Rambler, it broke cover in a patriotic ...

AMC claimed a modest 340 horsepower from these motors — 25 horsepower more than a stock 390 cubic inch V8 — but subsequent dynamometer testing revealed more like 500 horsepower. As intended ...