I ran a 13.4@107 with a 2.3 60' at an elevation of 4500ft and a DA of 7000ft. And full weight. Mods in sig minus H/C.


Thanks
Ever

 

I ran a 12.78 at 111 mph at Arroyo Secco on Saturday when it was around 100 degree air temperature. Not sure on density altitude but humidity was 45%, density was 30 in Hg. I think altitude at arroyo secco is around 4000 ft.

That was with a 2.0 60 ft stock engine with Incon Twin Turbo kit at 9 psi on 91 octane this was on Hoosier. Earlier this year ran a 12.39 at 114 on street tires with the same 60 ft as the hoosiers. Once I dial in my 60 ft times should drop closer to the 11's with no changes to boost or tuning.

That pretty good mph for you but most of its from the 60 ft time being so high. Is that with the big wheels

This is with an 4l60e, stock 3.23 and around 3900 lb race weight (ouch). I will be running this sunday in the morning dialing in the suspension and launch hopeing for 1.7 60 ft, which should get me close to my goal.

Gary

 

2001 Camaro SS
12.443 @ 107.91, 1.681 (best MPH = 108.15)
Pomona Fairplex
Elevation = 600
DA = ~1500
FTRA
TS&P Lid
Hooker LT & ORYP
Vig3200
ET Streets on Convo Pros
Opened cutout
3600 lbs

 

Just trying to get an idea on how much DA and elevation affect ET's. And by the looks of it, A LOT!


Peace
Ever

 

11.88@116.8 at 5100' DA stock engined. Should be able to knock a little off...

 

From my experience, disregarding baro and temp = every 500' of physical altitude ads 0.1 to your ET.

 

In my sig.DA was around 1300 at N vs S on Saturday.

 

See Sig for mods..

12.94 @ 108 with a 2.0 60' at 5488 feet DA, actual track altitude 3000 feet.

 

Info in Signature.

 

See sig, DA was about 1400 the night I ran my 13.1 pass. I have added the fan switch, & ASP pulley since then... no new times. Car is getting a 160* t-stat, LT's and a tune next.

 

13.4 @ 108.5 2004 stock Zo6 at thunder alley.
11.79 @117.9 2001 WS6 at thunder alley

 

Nice times Al! What mods did you have on the WS6? I heard about your ride.


Peace
Ever

 

times in sig were run at Moroso Motorsports Park, DA was about +72 in Feb 2002.

Usually the accepted rule of thumb for DA is every 1000 ft is a tenth of a second. This varies of course with each car and how quick they are. I've bracket raced for a while and seen my times slow down from winter air to summer air by about 3 tenths and DA around Gainesville during summer is between 2400-3200 ft.

Derek

 

all suspension except k member & a arms
12 bolt 4:30s
G5X2
TEA II 5.3 heads
all bolt ons
Spec 3
2 step
and all the usuall B.S. I had spray on it but i never got a decent pass out of it. it ran an 11.3 on the juice but i ran out at the bottom of 3rd. next pass i cut a 1.45 60' but missed fourth and rolled to an 11.6. kinda sux because i never got my 10 second slip.

 

12.97@109.2
1.92 60'
DA 8000 feet
track altitude 5350 feet

Comp Cams 216/.588/114+2
JetHot headers
Full custom exhaust
Lid & Filter
Ported TB
Tuning

 

Al, what was your race weight on those runs? And what rwhp were you at? I am going to the track next week and am hoping for some 12's on Nitto's. I could sure use your ET fronts.


Peace
Ever

 

In real life, it's more than 0.1 per 1000' with the same air temp. At least on LS1's it is. I routinely run at both 200' and 2710' feet, as well as 1100', and 2100' occasionally. I can guarantee you that 2710' feet will drop you nearly twice that much.

 

McRat,

Like I mentioned, different cars have different effects. I've also never been able to run same temps at different DA, b/c you have to figure the DA of the track (125 above for Gainesville) and then the weather, and rarely will you get the same outcome and be able to make a good comparison. I'm just comparing my 2, and I run between -500 DA (January air once or twice a year) and +3500 DA (summer air). Formula usually runs 13.30s in the summer, maybe an occasional 40s pass if really hot or muggy. In fall/winter 30-40 degree air it'll run 13.0s without problem and occasionally dip a high 12 second pass. My Nova is the same thing; best et was run in -435 DA, now I'm running 3 tenths slower and about 2-3 mph worse.

Derek

 

13.02 @ 107mph/ 2.0 60' @ Thunder Alley
Stock internals- Nitto's 555R's

 

Anybody with similiar rwhp running at a similiar DA and elevation? What are you running?

Peace
Ever