Budget 340 Upgrades

I suspect the engine needs to be bored anyway. The car sat outside for 30 something years before I got a hold of it. The engine did not turn at first and I carefully freed it up with mystery oil. It does not smoke or use oil but when I did head gaskets it had a coating of leaded fuel and dirt baked on to the pistons and combustion chambers. The leak down test will be the deciding factor as to how far I will go with it.

It probably does, but like Rob said and I agree, tuck that original 340 numbers matching engine away, and bore the heck out of a 360 and have at it.

Ultimately it's yours to do what you wish, but if the car is in really good shape, a convertriple etc, that #'s matching 340 is an important piece of the puzzle.