Stop discarding good 340 engines ! !

The only old school engine Chrysler ever made as a true high performance engine was the 426 hemi. Everything else had a basis, first and foremost, in practicality. They needed reliable, reasonably powerful engines for mass-produced cars. These were the small blocks and wedge BB engines.

Yes there were performance variants, notably the Max wedge, and to a degree, the 340TA variants. Yeah I know that there were some fast 440s but they were all pretty handicapped by their heads.

But all suitably modified small blocks can be made to haul ***, doesn't really matter whether you are talking about 318/340/360. I do feel the 273 is pretty handicapped by the very small bore which limits valve sizing and compression, but I'm sure you can still make a lot of power with one of these as well.