Are 340’s rare
I'd just freshen it up and keep it... One thing I noticed is tend to see more 340s for sale than 360s ... I think that's because people will sell them especially if they can money out of 340... (Which they can) And probably why I see less 360s for sale they just don't Garner the price so people just keep them...They will make there money and buy a 318 build on the cheap with the 340 money they made... I'd say if your looking to hotrod on the cheap selling it is what most people do... But a 340 will make your car worth more... Even in a non-matching numbers car ya stick a 340 in a slant six car and it'll be worth way more had you stuck a 318 or kept the slant six in it... People willing to pay a little more money for a car with a 340 in it But if you're looking to hot rod on the cheap that wouldn't matter to you... Kind of just on what you want with your car and what your direction is...