The PLymouth Barracuda of 1972 to 1974 :

1972 :

The Barracuda received a blow in 1972 when the insurance companies and gas crisis combined inadvertently to kill the musclecar craze.

The car's grill changed back to reminiscent of 1970's while the tail lights changed to 4 circles, much like the Corvette's or the 68 Charger.

The mighty Hemi and the 383 and the 440 engines were retired because they couldn't meet the new emission standards. So this was the first year you could not get a big block in you Barracuda or 'Cuda since 1966.

Also, for the first time since 1966, you could not get a convertible. Also, this is the year the 340 got a cast crank.

1973 :

1973 was a middle ground year as the Barracuda did not change much. Only two real changes. The 225 was dropped from the engine lineup. And the bumpers were now 5mph crash test mandatory. Optional was the 340 V8 which came standard on the 'Cuda. In mid year, the 340 was replaced by a new 360 cid V8, although performance didn't improve.

1974 :

It essentially looks the same as the 1972 with only minor changes to the drive train and options.

The only big change from 73 to 74 was that the 340 was dropped from the lineup and replaced with the 360.

And an another little difference between the 1973 and 1974 Barracuda was the seat belt arrangement in the back. In 73 both end of the belts came up between the top and bottom of the. In 74 the bottom came true a hole cut in the rear side panel.

About the engine, the Barracuda continued with a 318 and a 360 engines. The Barracuda would never return again as a true performance vehicle

The Barracuda was canceled after the 1974 model year.