Thread: 454 30 over not getting faster

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Originally Posted by Wanaraceme

Ok 1st pass 1/4 I ran a 12.82 @ 107 373s 125shot 28" street slicks
Now today I ran 12.77 @ 103.7 456s 250shot 31.5" true drag radials.
PLEASE HELP AND TELL ME WHATS WRONG
82 C10 5200 w me n bbc

Ambient air temps
track tempts
tire pressures
reaction times
Did you spin down the first 50 feet of the track, or hook up solid and lift the front end accordingly
What about shift points
can't just be tire size and rear gearing in this case

Originally Posted by mrmustang

Ambient air temps
track tempts
tire pressures
reaction times
Did you spin down the first 50 feet of the track, or hook up solid and lift the front end accordingly
What about shift points
can't just be tire size and rear gearing in this case

Don't know track temp
10psi
Reaction time don't matter because it was Tt and times don't start until tires move
Didn't spin hooked nice
6000 rpm

But I wana know why the whine isn't producing more power I went from 150shot to 250 and w the 31s and gear change I should b going through the traps faster

Originally Posted by Wanaraceme

Don't know track temp
10psi
Reaction time don't matter because it was Tt and times don't start until tires move
Didn't spin hooked nice
6000 rpm

But I wana know why the whine isn't producing more power I went from 150shot to 250 and w the 31s and gear change I should b going through the traps faster

If it was my truck, I'd be going back to the original gears and tires, but would leave the larger NOS shot and see how you do in a test and tune night.

Then I'd add the larger tires with the larger NOS shot, gears would be the last thing I'd touch as it will cause the engine/cam to work outside of it's sweet zone.