What kind of engine does a 1973 Pontiac GTO have?
While the 455 H.O. engine disappeared from GTO availability with 1973, the Pontiac engineering department came up with an induction solution borrowed, in part, from early American aeronautics. NACA ducts were originally designed to draw in air to a jet engine without creating resistance or turbulence.
Is the 1973 Pontiac GTO a Le Mans car?
The 1973 Pontiac GTO is a one-year beast so rare that some refuse to believe it ever existed. To them, the car is a Le Mans in clever disguise, driven by a guy wearing a Nixon mask.
What was the colonnade on a 1973 Pontiac GTO?
A colonnade is a sequence of columns connected by their own entablature, the horizontal structure that runs across the top to help keep the columns from toppling. The term “Colonnade” is also used to describe a 1973 Pontiac GTO, or any intermediate GM A-body produced from 1973-’77.
Why are there two ducts in the hood of a 1973 Pontiac GTO?
NACA ducts were originally designed to draw in air to a jet engine without creating resistance or turbulence. What worked for planes might just work for cars, so Pontiac built two NACA ducts into the 1973 GTO hood. Air was supposed to pass through the NACA ducts and get forced into the carburetor via ductwork.
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.
When did the Pontiac 455 Super Duty come out?
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. By 1976, the 455 was limping along at 200 horsepower and 330 foot-pounds of torque.
While the 455 H.O. engine disappeared from GTO availability with 1973, the Pontiac engineering department came up with an induction solution borrowed, in part, from early American aeronautics. NACA ducts were originally designed to draw in air to a jet engine without creating resistance or turbulence.
The 1973 Pontiac GTO is a one-year beast so rare that some refuse to believe it ever existed. To them, the car is a Le Mans in clever disguise, driven by a guy wearing a Nixon mask.