I heard the LS1 borrowed from other brands which came before

[Tuner]

The underlying harmony in the melody in "I put a spell on you" by Screamin' Jay Hawkins, Buddy Guy, Creedence Clearwater, et al, is borrowed from Beethoven's "Moonlight Sonata". So?

[Racer71]

I know sbf headers with a flange change bolt to a ls engine, same spacing, I’ve done it personally to several cars. The ls smells suspiciously familiar to a sbf. Even the firing order is the same if you number the cylinders the same.

[SchmidtMotorWorks]

I know sbf headers with a flange change bolt to a ls engine, same spacing, I’ve done it personally to several cars. The ls smells suspiciously familiar to a sbf. Even the firing order is the same if you number the cylinders the same.

Do you seriously think that engine designers in the modern era are reverse engineering junk designed before CAD and CAE?

[Truckedup]

I believe the 1949 Caddy and Olds were the first mass produced wedge head V-8's ? So everything that came after is a copy of these two engines...