brewster240

couldnt find any stock numbers to compare to, just wondering if this is good.

01 silverado, rcsb, 4.8, 2wd, auto, bone stock, dirty air filter, worn spark plugs, bald tires, and some of my junk and tools in the cab.

1st run
r/t - .286
60ft - 2.322
15.96 @ 85.57mph

2nd run
redlight
60ft - 2.523
16.3 @ 84.64

3rd run
r/t - .188
60ft - 2.379
16.128 @ 85.25

4th
r/t - .436
60ft - 2.383
16.050 @ 85.91

first time at the track this year, and first time running an auto down the strip.

corrected to 15.8 according to this:
http://www.dragtimes.com/da-density-...ect+ET+and+MPH

m3srt

iTrader: (2)

not bad for a stock 4.8 , let me guess u have a 3.73 gear ?



my truck ran like a 5.3 or a 15.6 bone stock , ... i forgot , it diddnt stay like that for long ....

brewster240

i actually dont know what gears it has, but i can verify the diff is open, lol.

the truck also has 159k miles on it.

m3srt

iTrader: (2)

ok would you say you have a better low end or a better top end ??

D_reks{5.3}

iTrader: (13)

Usually with open diff you have 3.23s or 3.42s..

GMCtrk

iTrader: (27)

2.2 is a great 60'

00ChevyScott

iTrader: (10)

the MPH is decent too in my opinion.

jaegmc99

thats pretty close to what i ran with an intake and muffler. I think its running great for a lil 4.8. Ima guess 3.42 gears. You can drop a couple tenths by dropping the spare, pulling the passanger seat and a new filter. keep running her!!

JoeGibbSilverado

iTrader: (9)

i would say great, i watched a silver gmc rc/sb run consistent 16.50's, went up to talk to him, he told me 4.8 stock as a rock

25006.0

I would have guessed 16.5 at best