gtosilverado

iTrader: (3)

i get 2.0x 60ft with stock tranny, no headers, no cam... just tune, udp, and cat delete.

05$ilverado5.3

So what would be the best thing to improve my times then?

fast84

I agree it has to be maybe a tuning issue. Who tuned it? Also just curious what your 1/8 mph was. Btw where are you in Arkansas???? I'm as far southeast as you can go!! LOL.

zippy

It's hard to say what's missing, but it sounds like a tuning problem.

tommy1005

what air pressure are you running the slicks at. Have you played with the air pressure any to see if you can get it to hook better? I would advise against going to a 26" slick or putting a lower gear in it since you're already spinning out of the hole. That will just make it spin more. I think you probably need to get on a dyno and get a good tune specific to your truck to make sure that everything is set the way it needs to be.

gtosilverado

iTrader: (3)

more than likely you need a better tune, but of course u need to be able to hook out the hole... you have a posi ? or the stock g80 ?? do you heat up the tires enough ? whats your suspension look like ??

RandomHero

iTrader: (24)

If you're lowered like me then your suspension could be the root of your issues. I would say invest in some cal-tracs or longbars. I know my wheelhop was so bad I almost broke my true-trac doing a burnout in the waterbox. My mph is good for a mid 8 second 1/8th but I'm running 9.0s because of a 2.1-2.2 60'.

I have longbars which hopefully should cure the problem at least a little bit.

05$ilverado5.3

Tsp mail order tuned, probably most of my problem. Dont know on the mph. Northeast corner Arkansas, Little town called Reyno.

05$ilverado5.3

Got posi...Suspension is stock other than upgraded shocks...need cal-tracs. Tires were good and warm. Few people on track, not enough to warm it up...My slowest time was faster than all other car/trucks there.

getonit

iTrader: (3)

You need to get rid of the mail order and get a live tune it is a night and day difference. If you have a stock posi unit it might not be working right. The gears and converter is a good combo there is no need to change it. You should be in the 1.7x range. When I had the 4.8 with tune, headers, k&n cai, e-fans, Tci 3000 stall with the stock 3.42's with a powertax locker it ran a couple 8.8x and consistant 8.9x-9.1x with a 2.0 60ft on 26 dr's. Your tune might still have tourqe man. in it or You need more timing, etc. I would check it first.