Is building a stroked 318 better than a stroked 340/360?

273 said

Doesn’t quite work that way, if I built a 1.5 hp/cid 273 409 hp and swap the bottom end for a 408 I don’t gain 203 hp for 612 hp. If there is a gain don’t think anyone has prove it’s a linear gain.

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I won't argue that, but that was not what I meant. I guess I might not have said it very clearly though. What I meant was that if you built a 318 up to where it was 1.5 HP per CI you'd have 477 HP. If you built a 360 up to yield 1.5 HP per CI you'd have 540 HP. A difference of 63 HP. 1.5 HP per CI is doable in a small block Mopar. Can you imagine a 477HP 318 in a 4 door Valiant? Talk about a Sleeper.