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-   GMT 900 Trucks General Discussion (https://www.performancetrucks.net/forums/gmt-900-trucks-general-discussion-188/)
-   -   My slowwwww 4.8 :( need help ! (https://www.performancetrucks.net/forums/gmt-900-trucks-general-discussion-188/my-slowwwww-4-8-need-help-495665/)

youngone2011 01-22-2012 05:45 PM

Thanks for your contribution.... Lol

11z71 01-22-2012 05:53 PM

I don't think that people are hatin' on them, but your already at a disadvantage with a smaller motor. Just out of curiosity, was your truck tuned with 20's? and didn't you just switch to 17's?

youngone2011 01-22-2012 06:17 PM

I had charlie switch it before I went to the track.... So it was adjusted to the smaller ones... But I think the stall is a big problem for my time I could drop .4 on the launch then a few tenths after the 1-2 shift when it's in the power band ..

Beatdown Z 01-22-2012 07:59 PM

That converter will never work good with an N/A 4.8. Get a 4000 rpm converter and go from there. When you swapped gears you should have gone with 4.56's. You're not dealing with a 5.3/6.0, the 4.8's are short stroke engines and they love rpm.

schino 01-22-2012 08:28 PM


Originally Posted by youngone2011 (Post 4852190)
why does everyone hate on these 4.8s lol

let em hate! the 4.8's are potent, they just need a little forced induction. as far as 60's go, on street tires i cant go any faster then a 2.3x 60 ft and that nets me a 12.9 @113 on slicks is a 1.67 11.8 @ 114. that start is so critical

gonzo 6.2 01-23-2012 12:20 PM


Originally Posted by pl4yboy (Post 4852233)
Look at your timeslip...



How much does one have to spend on a 4.8 just to get to a ET's of a tuned 5.3?

swingit

nonnieselman 01-23-2012 12:49 PM

have you tried flashing the converter? stall it up to 900 or 1000 and let it hit..
Stalling it up till the brakes push isnt gonna get it out of the hole hard.

youngone2011 01-23-2012 01:28 PM

I kill 5.3s all day! Lol that video in the beginning was a 5.3..... Haters....
And thanks for the tip nonnieselman...

gonzo 6.2 01-23-2012 09:49 PM

Not a 4.8 hater as much as a bang for the buck shopper,How much have you spent to beat a 5.3? isnt this post about going slowwww ? what about getting beat by hemi's?

For the up front cost of $800 more for a 5.3 ,im my mind that's the best bang for the buck.

You spend enough $$$ you could have made a 4.3 fast as hell to

06tx4.8 01-23-2012 10:55 PM

put a 100 shot on it and call it done. go see the guys at cold fusion, they are on barker cypress and 290 behind the randalls.


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