[AL427SBF]

Originally Posted by blykins

Had a flat on the way home yesterday, so that put me behind the rest of the evening...didn't really have time to expound.

But here's my thoughts on this:

You don't cruise at 3000-3500. You cruise at 1800-2500. Dynos generally won't pull down that far, so if you're wanting a good realistic view of what's going on as you're going 60-70 mph down the highway, I don't think it would be easy or prudent to go there.

If I were an independent dyno operator, I would decline at someone's request to pull it down that far, even if I were able to. As I mentioned earlier, you don't always know what the compression ratio is, what the cam is, what the timing is, etc. You get an engine pushing 11:1 with a short cam, too much total timing, and a quick curve, and I think it would be rattle city if you tried to lug it at wide open throttle at low rpms.

A pull from 3500 will tell you everything you need to know, unless you're building an engine for your RV or dump truck.

I guess we'll agree to disagree. Not all engine dyno's are created equal, nor are the latest chassis dyno's. Fortunately for me I'll have access to a Dynapack 4000 that bolts right up to the hubs and can provide a full load via calibrated EMF at any RPM you want. These guys are local and will be doing mine when the times comes, the vette vid shows just how clean a setup it actually is.
Dyno Services | Goodies Speed Shop - San Jose CA