Originally Posted by carjai
As far as parts working together, do u mean rpm range. How can u figure out the rpm range of some vortecs or ported camel humps
It can get extremely complicated especially when you start trying to look at ported heads. Who ported them? Were they "Really hogged out"? Is the throat size vs. average runner CSA vs. valve diameter all proportionate and correct. There's a hell-of-a-lot more to it than 90% of the people out there know or could even comprehend.
Then comes camshaft timing. There's some real wizardry going on there as well. Start the intake charge a little too soon and you could loose the ram-fill effect, disrupt the intake charge with reversion, etc.... Start the exhaust event a bit too soon and you give up power. Start it too late and the piston will see too much heat and pressure spikes, it will be inefficient at expelling the exhaust (disrupt in the intake charge), and will totally kill any chance of using the exhaust to scavenge--or help start the intake charge.
As far as matching the components together for a good combination......that can be fairly simple. You just have to be completely honest as to where the engine is going to spend the majority
of it's time (RPM range) and shoot for the fattest torque curve and peak power.
The torque converter should "Stall" just a little below your peak torque and the rear end gearing should put you right at your red line as you cross the finish line.
Now, If it's more of a street car, then there's a long list of compromises that will hurt a little performance but make it more "Streetable" but that's completely relative!!
First, decide what the car's primary role is going to be.
Second, list out the parts you've already got.
Then you will get a lot of usable feed-back on your parts selection process.