318 to 340

We have one. It's a 68 318 block bored out to a 340. If I remember correctly, it has stock 340 heads on it and a Mopar 484 cam in it. The thing runs awesome. It came in a parts car and the guy told us what it was and we didn't believe him, until we tore it done and sure enough it was a stock 340 bore. We put it in a 68 Dart and beat the piss out of it and it stayed together with no problems really. We had no clue how many miles were on it when we got the motor, but we put about 30k on it, changed the crank bearings once at some point and put it back together. It's not a chance most people would take, but to all you haters out there, it can be done, I have seen it and driven it and I wouldn't hesitate to put it back into another car tomorrow! :-)