LS3 C6 makes 527 rwhp!
12-11-2012, 12:20 PM
#21
I refered back to my time slip when I ran the car and I was wrong. It ran 12.1 @ 121. Not sure on the DA but it was very warm that day ~30*C so around 90*F?? , and there was a headwind. Definitely not the day to be setting any records. Thats why I went out there in 100% street trim. 30 psi. Bridgestone re11's out back. stock size. All numbers aside, it does surge at parking lot speeds or during low speed manuevers, which I've learned to accept. The car pulls extremely hard in the mid-high range.. go figure. lol. Around the city I have no issues other than the 1st gear surging, but it drives very similiar to a stock vette at cruising speeds. Would recommend this cam for the serious hp enthusiast.
12-11-2012, 08:44 PM
#24
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12-12-2012, 09:18 AM
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12-12-2012, 09:38 AM
#27
You need some seat time in the car and a bunch of runs to see where it really falls. Especially given that it is a stick shift.
With that power curve, you need to be shifting at 7300 or so to wring the mph out. And not be lazy with the shifts, or short shifting due to tire spin.
DA can have a big effect.
My honest opinion is that that power curve isn't real street friendly. And you shouldn't have too live with the surge.......
Although my car is an A4, the mph doesn't change much from street rubber to drag radials. And I have to get it in 2nd early to avoid tire spin on the street rubber. Maybe 1 mph difference. The ET changes 1 second......
I'm no where near 500 RWHP, but have gone nearly 123 in 2000ft DA @ 3450lbs.
Ron
With that power curve, you need to be shifting at 7300 or so to wring the mph out. And not be lazy with the shifts, or short shifting due to tire spin.
DA can have a big effect.
My honest opinion is that that power curve isn't real street friendly. And you shouldn't have too live with the surge.......
Although my car is an A4, the mph doesn't change much from street rubber to drag radials. And I have to get it in 2nd early to avoid tire spin on the street rubber. Maybe 1 mph difference. The ET changes 1 second......
I'm no where near 500 RWHP, but have gone nearly 123 in 2000ft DA @ 3450lbs.
Ron
12-12-2012, 12:19 PM
#30
I seen a dyno sheet from the same shop on a different build, I looked at that a few times as well.If that Mustang dyno is accurately calibrated to manufacturer's spec & you dyno the same vehicle on a accurately calibrated DJ dyno. You will see a minimum of 10% higher indicated RWHP & most likely a 13% higher indicated number..........
There is one table in the Mustang calibration file that is easily changed so the DJ & Mustang numbers are similar. That table does not affect the accuracy of dyno only how the parasitic multiplier is applied. That is direct form a Mustang Engineer, I asked a few years ago.
I see no issue with doing that if it is disclosed to vehicle owner so no false hopes are generated. Also in this case it would be easier for members to discuss & more accurately determine if the track MPH makes sense.
12-12-2012, 02:39 PM
#31
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I had a friend watch one of my runs and said from start to finish the car left 11's the entire way. I can honestly say the car felt like it was putting the power down.. but from the slips, it shows otherwise. 60' were 1.9 and 2.0 all day, if not worse.
