Good Cam for 318

YY1 said

I really wish those small displacement, small-ish cam dyno tests would start MUCH lower in the RPM range....

...because that's where people drive.

Obviously they had the capacity to show 2000 RPM numbers but for some reason, chose not to.

You can't "assume" the numbers below 3K were also higher.

If it were my car, I'd want off idle numbers.

Especially for a cam upgrade with an advertised power band starting at "idle" or "1500".

That's kinda the whole point of "data".

Click to expand...

You sure about that? I seriously doubt you drive around at 2000 RPM at WOT on a regular basis.

Thats exactly why most people don‘t start the pull that low. It’s exactly like being in high gear, WOT and 2000 RPM. There is no reason to do that to an engine. Ever.

So when you are cruising around at part throttle and 2k RPM, exactly how do you measure that without multi-million dollar test equipment?

That’s why they don’t get pulled down like that. You are almost certainly running into trace detonation (at the least) doing things like that.

Of course, I’ve heard it argued that if you foot brake your car you start out that low at WOT. That’s true. BUT…at the beginning of the run you are not at WOT. You only go to WOT right before the green light comes on (unless you wait for the green and then you are first round fodder) and you aren’t just holding it there at WOT. You are at part throttle.

Dyno operators aren’t stupid. There is no reason to test for WOT at that low an RPM.