Its funny on paper that makes sense, but I ran into a guy who had a 69 Z and said when the 70 Z came out he thought it would be awesome to put the 70Z LT1 motor in it ( for the power). So he found a guy who wrecked one, and bought the motor. Installed it, and while he said it ran "good", he also said it never put out the same power or had the same pull as the 302. He shook his head and said he knew it didn't make sense, and he went over the 350 and brought it to a friend who was a mechanic by trade, and the mechanic said it was running fine. So for what its worth....