i went to the track about a week ago and tell me if this sounds right? i was thinking it should be faster my best run was a 15.74@89mph i have cai, tbs, no cats, flowmaster single in duel out, tune, 20's stock gears trans is 15.7 right?

 

For a tuned extended cab on 20's I'd say yes. The MPH is decent, I was hitting 14.9's and 15.0's @ 90 & 91mph on a mail order tune, so I think you have some more E/T judging by your MPH. If you have stock wheel/tires I'd toss them on and see how you run. Another big factor is your stock gears, what are your gears? I'm guessing 3.42. Lastly were are you located? If your somewhere like Colorado for example your altitude isn't helping.

 

Just so you know Throttle Body Spacers are pointless! unless it duals as a nitrous plate

Dustin

 

Not bad at all.....swap those heavy wheels for alloy stockers and go run again!

 

i live in oklahoma and iknow its pointless i did notknow it was till after i got it but owell im going ot get some stock 16's and run and my slip says 15.7 @89 do yall have any tips on lowering my times?

 

Long tube headers,cam, and stall will drop you down quite a bit!

 

stall and 4.10's will make your truck a whole new beast with those 20s

 

im getting 4:10's in about a week then headers then cam and stall

 

4.10's would be a good start. If you have a G80 locker you might want to ditch it while your in there. Pick up an Eaton or Detriot Tru Trac.

 

thats what im doing my g80 is broke so im going big so i need the good stuff so detriot it will be