What kind of horsepower does a Pontiac 400 have?
In the 1968 Pontiac GTO, the 400 cubic-inch V-8 was tuned to deliver 360 horsepower and 445 foot-pounds of torque, or pulling power. The engine had a bore and stroke, or size of the cylinder and distance it travels, at 4.125 and 3.75 inches.
What kind of engine was in a 1973 Pontiac Grand Prix?
Powertrain offerings for the 1973 Pontiac Grand Prix were a virtual carryover from the year before. The Grand Prix’s base engine was the familiar 400-cubic-inch Pontiac V-8. Equipped with a Rochester Quadrajet four-barrel carburetor, it was rated at 230 net horsepower at 4,400 rpm, with 325 pound-feet of torque at 3,200 revs.
When was the last Pontiac 400 V8 made?
At the start of the 1970s, the 400 V8 generated more than 300 horsepower, but decreased to 180 horsepower by the time the last 400 engine was produced in 1978.
Why was a four barrel carburetor used in the Pontiac 400?
A four-barrel carburetor allowed the engine to have more air, and that resulted in more horsepower for speed. Valve angles and diameters were also adjusted according to the way the engine would be used. Higher performance engines had valve intakes at 2.11 inches and exhaust valves at 1.77 inches.
In the 1968 Pontiac GTO, the 400 cubic-inch V-8 was tuned to deliver 360 horsepower and 445 foot-pounds of torque, or pulling power. The engine had a bore and stroke, or size of the cylinder and distance it travels, at 4.125 and 3.75 inches.
At the start of the 1970s, the 400 V8 generated more than 300 horsepower, but decreased to 180 horsepower by the time the last 400 engine was produced in 1978.
A four-barrel carburetor allowed the engine to have more air, and that resulted in more horsepower for speed. Valve angles and diameters were also adjusted according to the way the engine would be used. Higher performance engines had valve intakes at 2.11 inches and exhaust valves at 1.77 inches.
What was the horsepower of a 1973 Pontiac 455?
In 1973, a 250-horsepower 455 with 370 foot-pounds of torque surfaced along with a 455 Super Duty, which provided 310 horsepower and 390 foot-pounds of torque.