Info on 74 Dart Sport

If that's a real Dart 360 Sport, with the original engine, that's a pretty nice package. It has bigger valves and better heads than other 360s. Hardened exhaust valve seats, too, ready for unleaded gas.

Agreed that it's a good combo, especially if all original and no obvious or hidden rust issues. However, starting in 1972, all 340 and 360 heads had 1.88" intake & 1.60" exhaust. The '74 360 4bbl did have better valve springs to go with the 340 cam.