which is faster.

We have a hundred or so 875 hp 360's at the shop. But R5 stuff might not be a fair comparison, haha. Hp numbers between the two won't be that different, but the 360 will make the power at lower rpm and you'll feel it better. Gear up the 318 and they'll feel the same. You will have to give more info on the car, but holding all other factors constant, the 360 will feel more powerful