to stroke or not to stroke?

I meant to say build two engines, one stroked, the other not and see which makes more overall power.

Please tell me how my assertion that larger displacement will make more power if all else is equal is bogus. Again, this is physics, not opinion. Maybe I am wrong. Enlighten me.

Consistency at the drags will put any combo on the trailer. Cut a perfect light and run right on your dial you win. What does it matter what the guy next to you does? People run mimivans and win races because they are consistent, has little to do with what engine is in the car.

You are wrong in two ways. Stroke length usually on affects torque output. You can add an inch of arm and the torque will go up but you wont see much power gain. The induction, rod length, LSA, duration @ .050, port cross section and a couple of other things make the power (horsepower).


Lets take a classic example...a 360 verses a 408. Same induction, same cam profile, same heads all that crap. The 408 will make the same power, but at a lower RPM. The 360 will make equal power but up the range a little.

Now, let's fix what's wrong. Since the 408 is SUBSTANTIALLY underinducted, we need a butt load @ .050 timing to get it to rev. It's now 2015.5 and with the parts and pieces out there if you can't make power at 7000 you deserve to get smoked. So now you have a big cam with lots of overlap and a bunch of .050 timing and probably a 106 LSA because , well I will keep that to myself for now. In a 3300 pound car, I say you need a 28 inch tall tire and about a 3.7 gear (even your big torque monster won't pull 3.55's that good).

Now, the lowly 360. I would order custom pistons that would let me run 6.25 long chevy rods. I could use about 12 less @ .050 on the intake and about 8 less on the exhaust so my cam is smaller (smaller is better right?). I now have the ability to run the engine to 7800 RPM with good parts and little trouble. That gives me 800 MORE RPM top work with. Now, I can run a 4.30 gear and use my mechanical leverage to leave you far behind because I have that leverage all the time.

If you think about it, it will make sense. It's way easier to get a less torque engine down a marginal track.