Did any of you horsepower calculator guys ever use this
Mopar 380hp 360 magnum create engine makes 409 hp
360 x 5400 / 3456 = 563 cfm
563 / 1.4 = 402 hp
Not meant to be 100% accurate though that's why we have dynos, engine efficiency are all over the place. Big difference between a 15:1 solid roller big port engine and a 9:1 rv cammed stock heads no formula gonna take that into account.
To me it just a quick way to ballpark something like eg... Say some one wants 425 hp 318 plug it in and says you need to make peak at 6500 ish rpm you decide thats to high and rather a 5700 ish hp peak plug that in find you need around 361 cid to do it.
In your world you'd probably use 1.2 or 1.3 or just your knowledge from previous builds.
Mopar 380hp 360 magnum create engine makes 409 hp
360 x 5400 / 3456 = 563 cfm
563 / 1.4 = 402 hp
Not meant to be 100% accurate though that's why we have dynos, engine efficiency are all over the place. Big difference between a 15:1 solid roller big port engine and a 9:1 rv cammed stock heads no formula gonna take that into account.
To me it just a quick way to ballpark something like eg... Say some one wants 425 hp 318 plug it in and says you need to make peak at 6500 ish rpm you decide thats to high and rather a 5700 ish hp peak plug that in find you need around 361 cid to do it.
In your world you'd probably use 1.2 or 1.3 or just your knowledge from previous builds.
