Im in Huntsville.


01_White_Light

 

What was you MPH? For those mods/dyno numbers/60ft times I would expect 12.4-12.5's @ 108mph ball park.

 

2 of my runs:

60' 1.887
330 5.412
1/8 8.339
mph 84.09
1000 10.873
1/4 13.013
mph 105.62

60' 1.843
330 5.322
1/8 8.220
mph 84.80
1000 10.734
1/4 12.860
mph 106.33

 

Your MPH seems down a little. Are you running those big *** wheels on the front? My best pass with a 6lb lower, filter, 80mm MAF, stock exhaust, chip, no traction bars, same Hoosier slicks, full weight (4910lbs) was 12.52 @108mph. My dyno numbers were very close to yours. Was the temp high/ Humidity or baro pressure out of whack?

 

Temp: 58
Humidity: 29
Abs. Baro: 28.62

Yes, I had those heavy wheels in the front. I knew they would slow me down but I did not think that much...

I will put the 18s back on front and loose the bed cover next time and see what happens. JL is gonna step up my race program as well, so I'm hoping for the better

Johnny said it could have something to do with the huge storm that was rolling in. It rained from the way home that night until the following night straight.

Jon

 

I run the same tires and wheels, putting down 400/472 SAE and I can only manage a best 60 of 1.88 and usually low 1.90s. my 1/8th has been about 8.1 in good air @ 85 mph. thinking hard about a converter.

 

I always ran with my bed cover in place. The baro pressure looks low. That will mess you up big time. The best 60 I managed was a 1.73 on a crappy track. To launch I would hold the RPM at 800-900rpm max then mat it and go. I tried from and idle up to 2000 rpm. The 800-900 range worked the best on my stock converter.

 

now you'll just need your dew point and elevation to calculate your density altitude. this will tell you very specifically how much effect the weather has on your truck. here is a DA calculator: http://wahiduddin.net/calc/calc_da.htm

I race at about 1900 ft elevation and 2400 ft density altitude is very good air for me.... i am usually in the 3,000+ range. some of the blistering times are guys at sea level in real good air. it makes a big difference. I've seen 1,000 ft make about .11 - .13 difference in the 1/8th.

 

if it's the vinyl cover you're talking about, you'll be better off leaving it on.

 

It is a fiberglass pro-sport lid from innovation.
I think it weighs in just over 100 lbs. Is it worth taking the tailgate off as well if I take the cover off? How much does the tailgate weigh?

 

Hey man drop me a line and well try and meet up and go to the track sometime before i sell my truck Blwntrk@charter.net