The 340 is the biggest POS V8 Chrysler ever made.

"When Muscle Car Review named the 1970 Buick GS Stage 1 as the third-fastest muscle car of all time in a November 1984 issue, the publication received numerous phone calls and letters from angry car enthusiasts crying foul. Nobody could believe that Grandpa’s Buick was higher on the list than the GTO Judge, LS6 Chevelle, and even the fastest Hemi-powered Mopars.

But the numbers didn’t lie. After sifting through decades of road tests from the largest automotive publications, Motor Trend’s recorded 5.5-second zero-to-60 time and 13.4-second quarter-mile placed the Buick behind only the 427 Cobra Roadster and 1966 427 Corvette."

From: How the Buick GS Stage 2 Redefined Muscle Car Performance