“Max effort daily driver” 318 build vs “Budget” 400 swap

273 said

Most would be satisfied around 10 lbs per hp give or take a lb or two, with good power idle-5500 rpm, peak around 5000 rpm which would be about 0.9-1:1 hp:cid, easy obtainable goal, 360-400 hp with a mild 400, 285-320 for a 318, mild with the right head.

Click to expand...

Just like a stock 383HP. Can you say 425 LB Ft? Even so, I still recommend warming up the 318 first. It will keep the car running and the chance for losing interest much, much lower. Then I would work on my 400 and basically build it in the same way I would a 383HP, compression and all. That would probably reach out and touch 500 LB FT.