1971 Ford Mustang Boss 351 vs 1974 Pontiac Trans Am SD 455
Here we have a drag race just like in the good old muscle car days, where at the drag strip were racing mostly stock American muscle cars. Today we have that kind of scenario, between two iconic muscle cars, the 1971 Ford Mustang Boss 351 and the 1974 Pontiac Firebird Trans Am 455 Super Duty.
First, let’s see the specifications, before watching the drag race between these two legendary muscle cars. The 1971 Ford Mustang Boss 351 it is powered by a Ford’s 351 cubic-inch, 5.8 liter small-block R-code Cleveland V8 engine. With the 4-barrel Autolite 4300D carburetor on top this engine produces 330 horsepower and 370 lb.-ft. of torque. This Mustang is equipped with a 4-speed manual transmission bolted to a 9-inch rear-end with 4.56:1 gear ratio.
On the other side the 1974 Pontiac Firebird Trans Am 455 Super Duty it is powered by a General Motors 455 cubic-inch, 7.5 liter big-block LS2 V8 engine. This engine with a Rochester 800-cfm Quadrajet carburetor is producing 290 horsepower and 390 lb.-ft. of torque. The engine is bolted to the GM’s TH400 3-speed automatic transmission, which spins 8.5-inch GM rear-end with 3.90:1 gear ratio.
The best 1/4 mile time for the Boss 351 Mustang is 13.10 seconds @ 108.26 mph, while the Trans Am 455 Super Duty had the time of 12.97 seconds @ 108.55 mph. In this race it is obvious that the Pontiac had a better time, but the Mustang with his small-block engine is held tightly against his big-block opponent.
Video source: PureStockDrags