what's the difference in these motors
today i bought a 1990 4.3 l chevy v 6 and was under the assumption it was a vortec because thats what the man told me come to find out it isnt but i couldnt tell a difference between it and my 94 v6 thay have the same angle on the intake bolts they have the same tbi same every thing i didnt think there would be a difference so i bought it running for $250
bad idea??