[tt335ci03cobra]

I actually wanted to point out altitude correction as up here in slc Utah, no zl1 will run a 12.9 stock nor will a 2013 gt500 run a 12.4 stock, (a zr1 went 12.5@115 here bone stock with a decent driver, 4300ft of altitude.

I sincerely hope the 13.1@113 run by automible magazine was uncorrected because that's about what a zl1 will run up here at 4300ft.

I know the gtr was able to turn about the same time as it does at sea level because it's turbo so the compressors make up for the thin air by spinning faster to keep the same oxygen count on the air/fuel side. The motor is down by the natural losses though so assuming the vq motor makes 320hp na, it's down about 12% of that which comes out to 38hp and tells part of why the car ran an 11.3~ instead of a 10.8 like the corrected numbers. That plus the surface was cold/dusty but awd puts power down well enough.

On a side; this fun fact about turbo's is one of the reasons I hope the next gen pony kings get turbo mills vs these sc mills. That plus the awesome top end and midrange, cooler inlet air temps etc etc etc. A big reason I went turbo vs 4.0 whipple on my 5.4 is the altitude I'm at.

Guys up here with "750whp" (corrected) whipples are much slower than my uncorrected 650whp 10psi tune; and they are running 20psi... My 16psi tune keeps liter bikes well at bay up here and I'm still on 91 octane with 16psi (850~whp). Also, turbos spread the power very flat because they dont experience parasitic drag. Compare my graph to most sc cars making 800whp and it's easy to see that the average hp from 4-6500rpms is why I can walk cars with "900+whp" especially at this altitude.



Ignore the 1st half of the graph because turbo cars don't feel load on a dyno until the mid range. I've seen 8psi on my truboost at just 2500rpms and that's easily enough for 650wtq and believe me, it pulls like a freight train even at 2500 in 6th gear after half a second of wot to spool the turbos.

Literally brake boosted, 80-120 in 5th gear is as fast as my buddies cammed c6 z on kill. (again altitude though, at sea level he'd walk me a little in a similar race as he'd be back up from 440whp uncorrected to 525~whp). In 6th, I've walked out on ss's and 5.0's in a similar style race. those trap 105 up here, srt8's run 14.0@103.


All that said; I hope I got a few of you on the band wagon for turbo 6th gen zl1/zr1/gt500's on the next go around.

Imagine a zl1 that on the just 8psi made 650hp from 5000-6200rpms. Ford could easily take the lightweight 5.0 coyote, stuff it with forged bits, and with just 10psi make the same or more power than the 5.8 sc mill makes at 15psi. Safety, reliability, less strain it's all something I hope to see especially since it'll make the cars much more consistent against turbo imports like the gtr and built Sti/Evo's when altitude comes into play. Gas mileage to but that's a story for another day.

A turbo zr1 would easily make 750hp with just 10psi on that ls9 mill. Probably from 5000-6750rpms no less. And again, gas mileage could increase because you could safely lean out the lower rpm fuel tables.