367 vs 410 Engines Masters
I get and agree with lot of what you said, you made a lot of interesting points.
And if you want to play the "perfect gearing/rpm" setup for a drag race,
It's not necessary about perfect gearing, but people are acting like I'm nuts for suggesting engines of similar power the smaller engine will probably need deeper gearing to be in it's powerband.
the one that gets more area under the power curve will always win.
This is one where people always assume the larger engine will always have the better under the curve like in this 367 vs 410 and even if they do it's not as great as people make it look like by comparing torque instead of the actual under the curve of each engine.
For example here's the 431 hp - 410 vs 423 hp - 367 and 425 hp - 323 (post 28), I took 4 data points from each (Best I could), Peak hp, 500 rpm, 1000 rpm and 1500 rpm under peak should be a decent take of under the curve wish they had 500 rpm after peak to add but 1500 rpms is the meat of each engines powerband.
And yes the best average curves in this case went from largest to smallest cid but was a 15 hp average difference between the 323 vs 410 and a 6 hp average between 367 vs 410, to me that's very similar power curves.
410,
403 hp average, 1.17 lbs-ft per cid
431 hp @ 5500 rpm, 420 hp @ 5000 rpm, 395 hp @ 4500 rpm, 365 hp @ 4000 rpm
367,
397 hp average, 1.21 lbs-ft per cid
423 hp @ 5800 rpm, 415 hp @ 5300 rpm, 395 hp @ 4800 rpm, 355 hp @ 4300 rpm
323,
388 hp average, 1.19 lbs-ft per cid
425 hp @ 6200 rpm, 405 hp @ 5700 rpm, 378 hp @ 5200 rpm, 345 hp @ 4700 rpm
And yep, I love my 408 "tractor motor" in the avatar. That's why I built it when I put this car together. Much broader operation range to get performance out of and don't have to have some theoretically perfect setup to get the most. 6200 rpm shift point suits me just fine. Now if only I had some TF heads instead of those Eddies.....haha
FWIW!
Why people build them now matter what rpm your at power is just a foot step away.