Last friday just before the shootout, i got my posi and gears installed. I went with a Auburn posi unit and GM 4.10 gears.
Off the line acceleration is awesome, the truck finally hooks and grabs like it's supposed to. However, i can spin the tires thru first and most of second depending on the surface/asphalt. The posi seems real strong and the gears are very quiet. I was originally going to go with 3.73's but the guy had a set that looked questionalbe, so he put in the 4.10's.
Driving conditions are very noticalbe. The 3.42's were very nice on the highway and the 4.10's are ok, just becuase i'm used to going 80mph everywhere i go. I now have to go 65mph just so i don't use a lot of gas. The 4.10's sping about 2000rpms at 60mph, the 3.42's spun about 2000rpm at 80mph.
From a roll, the truck it badass, not much can hang with it, at least what i've run across. About 55 on the highway, going into second, it pulls awesome too, i'll pull a stock fbod easily, and very hard.
At the track i wasn't very impressed with my times, although i wouldn't doubt it was 90+ humidity that night either, dew was rolling off the cars. My best was a 13.8 at 98 i think. I lost a lot of mph on the top end in the 1/4 but the new slicks and posi hook badass. I think I'll go with a 3000 yank stall next.
If wednesday or friday is cool, i'll be back out there to bust out a 13.5. I know it's in there!!
later,
allen