We're watching as a 1971 Plymouth Duster 340 and 1970 Buick GSX duke it out on the drag strip in the following video. Which ...

The Buick offered a mere 340 horsepower and 440 lb-ft in a year ... Photo: Facebook/Frank Volks Although the GS 400 engine had more duration and a higher lift and compression ratio than the ...

Buick sold only 280 GSX Stage 1 rigs in 1970 ... the smaller and more affordable Duster wasn't available with big-block engines. The 340-cubic-inch (5.6-liter) LA-type V8 was the most potent ...