94DreamGT said:There ya have it folks...straight from the mouth of a fella who works at the company who makes the chasis dyno equipment. I'm tending to believe him.
Sorry Tom...looks like STD isn't what was "actually" made...it is just another correction factor that tends not to be used anymore. Look at any magazine, visit an event, or go to any shop...people use SAE. Only benefit I would see to stating STD numbers if they were higher than SAE and you're trying to overinflate your numbers. Like I said, my STD #'s were like 310/340...but no one uses that so its pointless to compare.
Please tell me why the better dyno shops have a weather station that puts correction factors in the dyno results directly. Ed Curtis brought this up in a previous post about dyno results. What is that "calibaration" factor?
You talked to guy who is a dyno rep - how do we know he's got the straight skinny? Just cause he works for the company doesn't impress or convince me. He didn't even discuss specific correction numbers with you (see below). Ever hear of a bad recommendation from the comp cams "tech" guys? I'm not being argumentative here, I'd like to get the right info out there too - look at the two SAE correction factors below.
The J607 specification uses a temperature of 60 F as “normal” compared to J1349 (or J1985) which used 77 F. If you use both systems with the same set of data you will get higher results for HP/TRQ with the J607. That means you cannot compare corrected data from the two different systems.
If STD is never used anymore, then why is it a cal factor in every dyno out there? MANY of the dyno graphs you see on these boards are sporting the STD cal factor (I have them saved as imagein a file I keep of dyno graphs), so there are quite a few shops using it - right or wrong.
Ed Curtis, Brian, Buddy Rawls - you out there? Shed any light on this for us?