The 1974 Grand Prix received a revised split grille with vertical bars that was entirely above the bumper.
Out back, the boattail effect was softened somewhat due to a new federally mandated 5 mph (8.0 km/h) bumper that was added to the similar mandated front bumper introduced in 1973.
The license plate and fuel filler were moved above the bumper and taillight lenses were revised.

The interior trim remained virtually unchanged from 1973, with standard seating choices, including Strato bucket seats with center console or notchback bench seat with an armrest and cloth or Morrokide upholstery.
The bucket seats were available with optional recliners and adjustable lumbar support.
However, the real African Crossfire Mahogany trim was replaced by a simulated material for the instrument panel due to splintering problems on 1973 models; the "real" wood was continued on the console and door panels for another two years.
Also, a new cut-pile carpeting replaced the nylon loop rugs of previous years.

Also new for 1974 was a federally mandated interlock system that required the driver and front-seat passenger to fasten their seat belts in order to start the car.
This regulation, which was very unpopular with the buying public, was offered only this one year and on some early 1975 models.
It was rescinded by Congressional action.

Engines were carried over from 1973, including the 400 cu in (6.6 L) V8 (standard on the Model J) and 455 cu in (7.5 L) (standard on the Model SJ, optional on the Model J).
A Turbo Hydra-Matic transmission, variable-ratio power steering, and power brakes were standard equipment on both models.
In addition to the 455 V8, the Model SJ also added a Rally Gauge Cluster, "SJ" identification, and a radial-tuned suspension similar to Pontiac's Grand Am.
Radial tires were also a new option on the Model J this year.

Sales of Grand Prixs for the 1974 model year dropped from 1973's record of around 150,000 units to just under 100,000 units primarily due to new competition in the intermediate personal-luxury car market from a new upsized Mercury Cougar XR-7 coupe and Ford Elite, both based on the Dearborn's intermediate Torino/Montego platform.
Still, 1974 was the third best-selling year to date for the Pontiac Grand Prix.
The 1974 Grand Prix received a revised split grille with vertical bars that was entirely above the bumper. Out back, the boattail effect was softened somewhat due to a new federally mandated 5 mph (8.0 km/h) bumper that was added to the similar mandated front bumper introduced in 1973. The license plate and fuel filler were moved above the bumper and taillight lenses were revised.
The interior trim remained virtually unchanged from 1973, with standard seating choices, including Strato bucket seats with center console or notchback bench seat with an armrest and cloth or Morrokide upholstery. The bucket seats were available with optional recliners and adjustable lumbar support. However, the real African Crossfire Mahogany trim was replaced by a simulated material for the instrument panel due to splintering problems on 1973 models; the "real" wood was continued on the console and door panels for another two years. Also, a new cut-pile carpeting replaced the nylon loop rugs of previous years.
Also new for 1974 was a federally mandated interlock system that required the driver and front-seat passenger to fasten their seat belts in order to start the car. This regulation, which was very unpopular with the buying public, was offered only this one year and on some early 1975 models. It was rescinded by Congressional action.
Engines were carried over from 1973, including the 400 cu in (6.6 L) V8 (standard on the Model J) and 455 cu in (7.5 L) (standard on the Model SJ, optional on the Model J). A Turbo Hydra-Matic transmission, variable-ratio power steering, and power brakes were standard equipment on both models. In addition to the 455 V8, the Model SJ also added a Rally Gauge Cluster, "SJ" identification, and a radial-tuned suspension similar to Pontiac's Grand Am. Radial tires were also a new option on the Model J this year.
Sales of Grand Prixs for the 1974 model year dropped from 1973's record of around 150,000 units to just under 100,000 units primarily due to new competition in the intermediate personal-luxury car market from a new upsized Mercury Cougar XR-7 coupe and Ford Elite, both based on the Dearborn's intermediate Torino/Montego platform. Still, 1974 was the third best-selling year to date for the Pontiac Grand Prix.
Pontiac Grand Prix