Ask a muscle car fan to name a big GM engine and they will picture a 454 or a 455. But those famous numbers barely scratch the surface of what General Motors actually built. Car News Central counts down six powerplants that dwarf the ones most enthusiasts consider huge, some of them living in places far from the drag strip. The list stretches the very definition of a GM engine. Watch to see how far past 500 cubic inches they went.
Ask a muscle car fan to picture a big engine and they will probably imagine a 454 or a 455, the fabled numbers that ruled the street in the golden age. But those figures barely scratch the surface of what General Motors actually built over the decades, and Car News Central assembles a countdown of six GM powerplants that dwarf the ones most enthusiasts consider huge. Some of these engines lived in places you would never expect, far from the drag strip and the show field, and their displacement figures read less like car specs and more like industrial equipment ratings. The list stretches the definition of what a General Motors engine can be, from the muscle car legends we all recognize to monsters designed to move things far heavier than a Chevelle. The fun of the video is discovering just how far past 500 cubic inches the company was willing to go.
As an Amazon Associate I earn from qualifying purchases.
For most of us, the story of big GM engines starts and ends with the classic muscle era. The 454 big-block Chevrolet and the 455 offerings from Buick, Oldsmobile, and Pontiac defined an age when displacement was king and torque was the currency that mattered. Those engines earned their reputations on the street, delivering the effortless low-end grunt that made American muscle feel invincible for a few glorious years.
What makes a countdown like this worthwhile is the way it broadens the picture beyond the usual suspects. General Motors was never only a car company; it built trucks, heavy equipment, marine powerplants, and industrial machinery, and some of those applications demanded displacement on a scale that makes a 454 look modest. When you widen the lens to include everything wearing a GM badge, the ceiling rises dramatically.
There is real value in appreciating that range. Understanding where these engines lived, and why each was built to be as large as it was, deepens the respect any enthusiast has for the engineering culture that produced our favorite muscle cars. The same company chasing quarter-mile glory was simultaneously solving problems that required brute mechanical force, and the two pursuits share more DNA than you might think.
Whether every entry surprises you or simply confirms what you suspected, this is an entertaining tour through the upper reaches of GM’s displacement history. Count them down, and see how many you can guess before they appear. Watch the full video and share your thoughts below.
Republished by Blog Post Promoter
Related posts:
1952 Indy 500 Car John Snowberger Restores His Dad Russ Snowberger’s
Teenager Drove Muscle Cars from his Grandfather’s Dealership
50’s-70’s American Street Racers. Where are they now?
2+2 = FAST! One of the Rarest Pontiac’s of the 60’s Beats 67 Barracuda w/ 383
Who is the Greatest Drag Racer of all Time? NHRA’s 50 Greatest
The Most Colorful Drag Racer,NHRA #49 Top Driver Richard Tharp
Is the Ford 427 the Ultimate Ford Racing Engine?
Float Like a Butterfly Sting Like A Superbee
The Most Embarrassing Vehicle to Drive?
Deaf Woman Roars with 1/4 MILE TIME 3.58 SECONDS @ 386 MPH
