CI big-block V8s in the late 1960s and early 1970s, one each from Oldsmobile and Pontiac. But how did these two engines ...

We build-up an Oldsmobile 455ci motor for more power. Find all the details inside Popular Hot Rodding Magazine.

Both Oldsmobile and Pontiac had a V8 engine called the 455. Even though both were owned by General Motors, the engines are similar, but not the same.