Hi- I am listing some of my favorites............301 chevy 302 chevy 400 sm block chevy- 390-427 ford[solid lifter] 403 Olds is also a good one. and last but not least an engine I will use in an upcoming project-a series 1 3800 GM v6 with supercharger and a pulley/chip swap[315HP]goes up in front-traditional rear wheel drive[ with an S-10 trans from a 2.8 v6]....these are hot little engines and are vitrually INDESTRUCTIBLE...hey we gotta face reality -some of our dream engines are just out of reach price-wise and in unavailability for most of us!!