Comparison 340 / 289

289 is giving up too much displacement to a 340. I have read that back in the day, the 289 K code mustang was the D/Dart's nemesis. I have had 289's, 302's and also small block mopars. A better comparo to the 289 would be a 318, and the 318 was torqueier for sure. I still like those small block Ford engines. Sure are reliable. My wife's explorer 5.0 is running strong with 210,000 miles and only a t-chain and water pump.