Well I do remember hearing that name being thrown around in the 80’s.The Vortec name was first used on the V6 and I believe just indicated it was EFI. They didn't have the multi-port injection, nor the Vortec head. I beleive the OP has a V8, or at least it's assumed.
I've never heard of any Chevy Vortex outside of people that don't know, don't care what they drive.
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