367 vs 410 Engines Masters

DionR said
I am going to speculate that the 410 is faster on the drag strip even if the 367 is geared differently. I say speculate because all I have is a half ***'ed attempt at the curves and an old copy of Drag2000 to plug them into.

Here is the 367 power curve I entered:

View attachment 1716419717

And here is the 410 power curve:

View attachment 1716419712

My results using a '72 Duster and running iterations for stall, launch, shift and rear gear are as follows:

367 - 11.106@118.0
410 - 11.042@118.5

Not much faster, but still faster.

Here are the results for the 367:

View attachment 1716419722

And the results for the 410:

View attachment 1716419714

And the settings for the iterations:

View attachment 1716419716

It's far from conclusive, but more stall, higher shift points and more rear gear still weren't quite enough to catch up with the bigger motor.

Doesn't mean the premise isn't valid, but I would say for this theoretical discussion, the 410 is the faster motor. In my opinion.

Oh, and I went back and plugged in actual rear axle ratios rather than the speculative ones:

367/4.11 -> 11.106@118.0
410/3.71 -> 11.043@118.6

So the "odd" ratios didn't throw it off.

I never said 367 it's faster or even better, All I've said is the powerbands are similar, even the 323 was, so they all have similar potential, especially a lot closer then the way they read the graph in the video and how a lot of others will read it. And to me your results show similar performance, If people were racing these engines in a highly competitive heads up race class then we would know forsure which is best, but that's unlikely gonna happen :)

I imagine there's a ton of these 410 crates running around with all sorts of gears and stalls and probably a few similar 323 and 367 out there, doing the same thing, It's a bit of a crap shoot, if your gonna run one of the smaller engines you should run more gear than the average guy or "Or take solace in your compromises." or build bigger.

I'm not anti displacement just pro fair comparison.