Slant-6
A well known Six Cylinder engine found in Chrysler products such as Dodge Dart and Plymouth Valiant. They come in 170, 198 and 225 cubic inches. The Slant in the name comes from the 30-degree from vertical angle the cylinders are inclined at. They are very reliable.
Dad's 1976 valiant is a huge POS. The trunk, floors, fenders and rear quarter panels are rusted though despite being a southern car. It corners horrible due to torsion bar suspension. That said it's 225 Slant-6 in it ten thousand times better than the car Chrysler built for it.