i just got my car dyno tuned. i have been waiting for along to get this done just took awhile to find a shop near me that would tune my lt1. my set up is le ported heads and a custom joe overton(le2) cam. i have had this set up for about 2 years but lots of things have gone on and just know got around to getting it tuned. in addition to the heads and cam i have 1.6rr, 30pound ford injectors, a holley 52mm tb, electric wp, cold air, hooker lts, and a ported intake. i also have 9inch and a heavy .083 steeldriveshaft so i know that had to rob me of some power. and it was also 105 degrees outside today. my numbers were 382 hp and 352 tq. just wondering if that sounds about right.

 

Do you know if the dyno #'s are SAE, or standard. It should say on the dyno sheet. Either way, it looks good. That's for sure. TQ looks a little low?

Dan

 

says sae. i have seen this before what is the difference between the two?

 

SAE is corrected for humidity and temperature, so it doesn't matter if it's hot out, or humid. The SAE #'s adjust for that. Standard #'s are what your car is putting out on that particular day, in that particular weather. In your case, standard #'s would look pretty bad in that heat. If it was 50 degrees, the stardard #'s look great. Hope that helps.

The good thing about SAE is that you can compare different dyno sessions without worrying about what the weather was like each day.

Dan

 

can that really corrected the heat soak from the intake?

 

Does sae correct for elevation also?

Your numbers dont sound too bad at all. I'd like to see the dyno sheet though and see what the numbers under the peak look like.

 

dont have way to post the dyno sheet. but the power under the peak look very good. they dont spike at all. and the and the tq doesnt start to fall of until about 4800 either. it feels great.

 

If you can scan it or take a picture and email it, I can post it for you.
jmontign@yahoo.com


Nice numbers

 

• SAE (Society of Automotive Engineers), USA. Power is corrected to reference conditions of 29.23 InHg (99 kPa) of dry air and 77 F (25°C). This SAE standard requires a correction for friction torque. Friction torque can be determined by measurements on special motoring dynamometers (which is only practical in research environments) or can be estimated. When estimates must be used, the SAE standard uses a default Mechanical Efficiency (ME) value of 85%. This is approximately correct at peak torque but not at other engine operating speeds. Some dynamometer systems use the SAE correction factor for atmospheric conditions but do not take mechanical efficiency into consideration at all (i.e. they assume a ME of 100%).
• STD or STP. Another power correction standard determined by the SAE. This standard has been stable for a long time and is widely used in the performance industry. Power is corrected to reference conditions of 29.92 InHg (103.3 kPa) of dry air and 60 F (15.5°C). Because the reference conditions include higher pressure and cooler air than the SAE standard, these corrected power numbers will always be about 4 % higher than the SAE power numbers. Friction torque is handled in the same way as in the SAE standard.

 

Sounds like I was little incorrect about the SAE and Standard values. I didn't realize that standard was also corrected.

Dan