Value of a 340.....

I'd throw a number out there of round $1200-$1800 but I may be a little high.I wouldn't pay that much for one but a lot of people would. Maybe even more. Naturally the 70 would be worth a little more than the 73 but the 70 would have a forged crank. There's a fair chance the 73 does too but not an absolute. The heads would be a determining factor too. The 70 would probably have the X-heads while the 73 would have the J and have smaller valves.