I was out at Albuquerque National Dragway with the DA reaching 7500 feet.

60 ft- 2.4x
1/8- 11.1

1/4 17.34
MPH- 80.4

I would only go through my first two gears(700R4+2.73's). I was shifting at about 4600 rpm. The car seemed to run best when it was hot about 210+ degrees.

I am not sure what the corrected times are for sea level, but I think it did ok for 164,000 miles and only mods are KN filter and flowmaster muffler, shift kit, vette servo. I was running 255/60 R 15 tires in the back with no wheel spin.

 

Did you base yur 4600 rpm shifts on the stock tach? I would take it much higher. The stock tachs are so far off you can gain so much in your ET's by letting it go a tad higher. The best way to varify how much your tach is off is with a scan tool.

 

the auto and gearing is kilin ya.

and ya tach is off, probably shifting around 4200.

i know mine is 200rpm off

 

Altitude for track: 5320

NHRA Correction factors: .9341 ET 1.0703 MPH

Corrected ET 16.20

Corrected MPH 86.05

You're running pretty good for a stock motor, stock running gear.

And you're running about the same as I do, mine wants to shift out of second right before it gets to the 1/4 mile traps.

 

my tach goes the other way. at WOT it shifts at 6800 rpm. the trans is completely stock and so is the rest of the car. so it probably shifts at 5k