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ran my stock truck

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Old 06-18-2009, 08:58 PM
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That sounds good for a stocker!!! Now time to start THE MODS!!!!!!!
Old 06-18-2009, 09:53 PM
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not bad my old rcsb 01 5.3 went 15.6 bone stock at 89mph so its pretty good, whats your location?
Old 06-18-2009, 09:58 PM
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I was going to say the same. I went a best of 15.6 at 89mph w/my 99 stock 5.3L
Old 06-18-2009, 10:36 PM
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updated the first post with info from all 4 runs.

at 3am when i originally posted, i made a mistake, my 60ft was 2.3, not 2.2

my location is new york, the track was lebanon valley dragway, close to albany.

aside from actually counting, is there a data tag anywhere that will tell me my gear ratio?
Old 06-18-2009, 10:43 PM
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i was a bit inconsistent too, im used to running manual cars with 4 or 6 cylinders.

the first run was right off the street.

second i ran in tow/haul mode, just to see if it felt any different. i was loading up the tc and my brake foot slipped and i rolled through the light and red lit.

third run i started spinning a little. i have really shitty tires right now.

fourth run i didnt load up the converter at all and just drove away from the light.

you guys have any tips? this whole tc thing is new to me. i think im gonna try to go one more time with the truck stock to try and get some consistency, then bring on the mods.
Old 06-18-2009, 10:51 PM
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Originally Posted by D_reks{5.3}
Usually with open diff you have 3.23s or 3.42s..
My 4.8 came stock with 3.73's and an open diff.


Those aren't bad times either IMO. Mine went 14.8 with a CAI, catback, and a half assed tune. I wouldn't try much weight reduction unless its in the cab; I tried taking the spare and tailgate off with an open diff and it spun through the 1/8, lol.

Best thing to do is air down a bit and roll into the throttle; don't pay attention to the lights just ease into it at first and hit it pretty hard once you pass the tree. Its how Quicksilverado taught me how to run on street tires.......but I had to get some slicks because I never could get it right.
Old 06-19-2009, 12:31 AM
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Originally Posted by StrokerAce03
My 4.8 came stock with 3.73's and an open diff.
My bad. Most the time you see them with 3.23s or 3.42s.
Old 06-19-2009, 02:47 AM
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Originally Posted by brewster240
...aside from actually counting, is there a data tag anywhere that will tell me my gear ratio?
look at the RPO codes in the glove box

GT4 = 3.73
GT5 = 4.10
GU4 = 3.08
GU5 = 3.23
GU6 = 3.42

G80 = limited slip

Originally Posted by StrokerAce03
My 4.8 came stock with 3.73's and an open diff. ...
so did my 4.3

mine's even 4x4, manual, and has the towing package - i can't believe it didn't get a LSD
Old 06-19-2009, 03:48 AM
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The towing package didn't come with the G80's, it was a separate option. At least back in the good ole days

How come so many of you are clueless as to what gear your truck has? I would have thought you'd know details like this about your truck
Old 06-19-2009, 04:26 AM
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Originally Posted by GMCtrk
The towing package didn't come with the G80's, it was a separate option. At least back in the good ole days ...
i just meant i was surprised that box didn't get checked with everything else


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