The 318 shares the same block as the 360 and if he goes with the max displacement of 402cu.in, which is available for that engine, he will only be short 6 cubic inches, so thats going to be within ball park too. Thats within the ball park of what he would need. You'll note that the engine is rated at 480hp. Here is a "stroker" 360 available thru Mopar with 408 cubic inches of displacement: Once the displacement is there (and he's in big block territory) it's well within the possibility to get within the 400 RWHP ballpark…. Currently several "kits" are available to stroke a 318 out to 370, 390, 396 or 402 cu.in. Anotherwords, via increased displacement. IMO the best way to get there is by building a stroker motor. I believe it's totally possible to build a 318 to make 400 "RWHP", and that such a build could be driven on a daily basis, and get "acceptable" fuel economy (If he can resist the urge to nail the throttle to the floor) I disagree in your two word response of "No way" Another thing, while that lopey cam sound is bad ass, it isn't going to be good for saving gas.Ĭlick to expand.I will agree with you that this kind of build won't be cheap. You're either building for power or economy.
![easy power upgrades for 5.9 magnum easy power upgrades for 5.9 magnum](https://www.surplussales.com/Images/Transformers/LowVoltage/tp-u2257_1_lg.jpg)
400hp out of a small displacement engine is a lot to ask for. Keep in mind as well, that your engine may not get better fuel economy. If you're in the dark as to what you'll need to reach your HP goal, either buy the book or find a local mechanic who specializes in performance engine builds, particularly those who can build a Mopar. Be prepared to answer a bunch of questions too, concerning your build.
![easy power upgrades for 5.9 magnum easy power upgrades for 5.9 magnum](https://robotbits.co.uk/wp-content/uploads/2019/08/f182-Maker-Drive-Terminal-4-1-0-2-1-800x800-768x768.jpg)
![easy power upgrades for 5.9 magnum easy power upgrades for 5.9 magnum](http://www.zcodeperformance.com/images/2012-08-08_21-55-52_87.jpg)
Never select a cam based on a sales brochure The best suggestion is to contact different cam builders and tell them what you have in mind and shop around for the best deal. Reality is, no one is going to recommend a particular cam because no one knows how you plan to build your engine. Are you building a stroker? There are tons of ways to build an engine and there no one size fits all approach to this. Will you need to anything to the bottom end? Well it depends on your build.