One of the best engines I ever had was the Mopar Peformance 360 crate engine that was rated at 300hp/375tq. I wish they could still offer that engine. Smooth idle cam, roller setup, and obviously underrated in both hp and torque, according to seat of the pants and dyno tests in magazines. The assembly quality was questionable but what a great engine! I'm sure those specs are still available online. I'd love to build one again. 360 block, magnum heads, M1 intake (I might consider trading the intake for a air gap).

I had two of those and they made great torque yet smoooooth idle, which made great sleepers in my old boxy Diplomat Police cars. In my Dippys, with 3.23 gears, sure-grip rears, 235/70/15's and weighing in at 3850 pounds, it would roast the tires all day long if I wanted to, and pulled hard past 100mph when I wasn't comfortable pushing the car anymore.