2005 Silverado

iTrader: (19)

15.1005 @ 92.88 mph, with a 2.2113 60'

Last pass of the night was a my best pass. Shifted the best i could and the fastest i could, so there could be more in her, but until i get an auto or (never going to happen) new NV3500 and clutch. We'll never know.

GMCtrk

iTrader: (27)

Nice..! What's going on with the 4l80e swap? Is it still in the works? ...You'll really love that 6.0 when you get it in. I'd seriously kill myself if I ever had to drive a 4.8 again. The damn thing couldn't even go up a hill on the highway and hold speed without downshifting

2005 Silverado

iTrader: (19)

Yeah, i am looking for a job right now so all projects are stopped. But that is the plan, 6 liter, and 4l80, in no particular order.

2005 Silverado

iTrader: (19)

4.8 5 speed guys post up your times...i havent found any.

So im self proclaiming myself fasterest 4.8 5 speed EVER haha

Powder

iTrader: (3)

I forget the exact time, but my fastest 1/4 pass was right at 101mph.
That was last Feb and by this Feb I hope to have the 4L80E in. The nv3500 will not shift past 5400rpms w/ boost. Currently I am only running 6lbs... what a waste..

Once I get the tranny in and make a few passes I will let you know how the 4.8 does w/ 10lbs in AUTO.

custm2500

iTrader: (10)

I am thinking it would be a horible idea to put the 4l80E behind that 4.8. Going to all but stop the motor with it's weight! You said no particular order so I don't know if you plan to buy a motor and trans install as you get each, or buy them when you can afford it and istall when you have both.

outlawz2004

iTrader: (18)

LOL, and I can claim I am the fastest ext cab with only intake,exhaust, and tune. I would have figured a manual trans 4.8 reg cab would be a little faster.

AJII

iTrader: (7)

I still say the track had a malfunction when you ran haha. I'm so jealous your truck runs faster than mine and I have a cammed 5.3

RibeiroBJJ

iTrader: (17)

Congrats...For a comparison my 99 4.8 a4 rcsb GMC ran a 14.72 back in 02 . I had the same mods as you except no cam, and slp 1.85 rockers..
-should be .4 to .7 quicker with an auto...

2005 Silverado

iTrader: (19)

I dont think there will be any issues, i know its heavy, but i have seen many people swap to the 80e N/A at many power levels and they noticed slower off the line, but faster up top. Also the convertor i am going to get is the 35lb billet from circle d (when i have the cash) so that will help.

Have you ever shifted a rather worn nv3500? Enough said

Track was hooking amazing, I was on street tires, and i dont launch it hard because i dont want to break something (clutch mainly) Same night a truck that ran about .4 faster then me at the track, i had a nose on him on a highway pull...so take that as you will haha.