Drag Racing Tech - New best with stock converter.

No changes since I ran 12.62 @ 110.11 mph w/ 1.92 short with a set of '99 Z28 wheels and bald BFG drag radials, except new rear Convo Pros with Hoosier drags. <img border="0" title="" alt="[Big Grin]" src="gr_grin.gif" /> My friends were telling me the drags would slow me down but I did not expect them to slow me down as much as they did.

Here's my runs:
Run1
.546
2.004
5.478
8.298
87.89 MPH
10.727
12.796
108.95 MPH

Run 2
.594
1.993
5.484
8.303
87.76 MPH
10.736
12.809
108.72 MPH

Now, both of those runs were with DA around 0 feet. Last time I was running 12.6s @ 110 mph all night long with the BFG's and DA around 800 feet. So, the slicks were slowing me down nearly .25 ET and 2 MPH if you consider the correction for DA!. <img border="0" title="" alt="[Sad]" src="gr_sad.gif" /> But I thought a few changes could improve my times so here's what I did...
After logging my second run with EFILive I noticed my 1-2 shift was @ 6250 rpms but my 2-3 shift was only @ 6070 rpms. So with LS1Edit I bumped the 2-3 shift up 1 mph from 78 to 79. My friend also used Edit to lock my converter @ 95 mph. Then, I raised the slicks from 14psi to 25psi. Finally, I took all the crap out of my car (about 50 to 70 pounds worth) and put it in my friend's car.

Run 3
.578
1.945
5.375
8.149
89.22 MPH <img border="0" title="" alt="[Eek!]" src="gr_eek2.gif" />
10.542
12.580
110.54 MPH <img border="0" title="" alt="[Eek!]" src="gr_eek2.gif" />

Woah! I can understand the ET somewhat, since my 60 foot was better but I didn't expect those MPH's?!? <img border="0" title="" alt="[Confused]" src="images/icons/confused.gif" /> . I was going to leave after my third run but now I had to make one more pass just to back it up for peace of mind.

Run4
.515
1.962
5.396
8.173
89.08 MPH
10.569
12.610
110.43 MPH

Well, a little slower but at least I backed up the 12.58 pass. <img border="0" title="" alt="[Smile]" src="gr_stretch.gif" /> BTW, EFILive was showing my 2-3 shift @ 6230 rpms, right where I wanted it.

Well, now the Yank PT4400 that's sitting in my garage can go in. <img border="0" title="" alt="[Big Grin]" src="gr_grin.gif" /> That will be my only change for the next time I go to the drag strip. It should give me a good me a good indication of how much the converter is worth. I can't wait! <img border="0" alt="[Burnout]" title="" src="graemlins/burnout.gif" />

Derrick

<small>[ October 17, 2002, 01:18 PM: Message edited by: PewterZ28 ]</small>

Damn, those are some kick ass ET's for a stock converter! You should be knocking on the 11 sec. door with the PT4400 in there. Maybe you can make better use of the Hoosiers then. <img border="0" title="" alt="[Smile]" src="gr_stretch.gif" />

When is the yank going in? <img border="0" alt="[Camaro]" title="" src="graemlins/camaro.gif" />

Dude

Your car is flying. Mid 12s withstock converter. Thats amazing.

Muchas Gracias amigos! <img border="0" title="" alt="[Big Grin]" src="gr_grin.gif" /> It's amazing how much the little things like tire pressure and weight can effect performance. But you're right, George, I'm not getting much use out of the Hoosiers with the stock converter. I wanted to see how much the PT4400 would drop my ETs by itself. <img border="0" title="" alt="[Wink]" src="gr_images/icons/wink.gif" />

Shawn, I need to talk to the owner of my dealership to see if he will let me use an engine bay next Saturday, the 26th or the following Saturday, the 2nd of November. I hope to go to MAR on the 3rd. It's the last day of the season. <img border="0" title="" alt="[Sad]" src="gr_sad.gif" /> I still have to send my converter to Yank to have them look at it and make sure all of the foamies are out of it. <img border="0" title="" alt="[Roll Eyes]" src="images/icons/rolleyes.gif" />

Derrick <img border="0" title="" alt="[Cool]" src="gr_images/icons/cool.gif" />

awesome ET's for the stock converter. Any 3200+ stall will probably have you knocking on 11's for sure!

a 3600+ and you will have 11's

dont yank it.. vig it <img border="0" title="" alt="[Big Grin]" src="gr_grin.gif" /> hahaa, but truthfully yank or vig and you will have 11's <img border="0" alt="[cheers]" title="" src="graemlins/gr_cheers.gif" />

I found the same to be true w/my 26-8.5x15 ET Drags w/my stock converter and 3.23's, you have to run the tires hard. At 28 psi, I run 12.80's-12.82's w/ 1.91 sixtys all day long. Less than 1500 mi. on '02 345hp w/dual-dual SS. My mph's are in the 108+ range. Best wishes. WJ. <img border="0" title="" alt="[Wink]" src="gr_images/icons/wink.gif" />

</font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif"> I hope to go to MAR on the 3rd </font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">Derrick mar close on the 29th and gateway on the 2nd

what do you mean by DA?

you'll need to lower your shift points with the verter...

in good weather with stock vert (no EDIT done) i ran 12.59 @ 109.4 with a 1.87 60'

Street tires
SLP y-pipe & LM
lid
gutted maf
skinnes and took out all the weight. I weighed about 3550 with me in it.

Now I have a 4000 stall
So far I've only made 2 passes on slicks. I need to play with edit a little. best so far is 12.40 @ 109 with a 1.66
that's with normal tires up front.

</font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by Lane:
<strong>Pull your interior and throw on a short-belt and you'll do even better. I ran low 12.7's with full interior and no short belt, but a buddy did and went 12.4's on the stock TC. <img border="0" title="" alt="[Smile]" src="gr_stretch.gif" /> </strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">Mucho more than that. Think hasta luego sway bar, adios power steering and air pump, hasta lavista front bumper support and wiper reservoir, hasta mananna passenger seat. <img border="0" title="" alt="[Big Grin]" src="gr_grin.gif" /> Then say hello skinnies wrapped around Convo Pros and welcome lightweight battery. <img border="0" title="" alt="[Big Grin]" src="gr_grin.gif" /> All of that should drop my front another 150+ lbs and the total weight of my car about 180 lbs. <img border="0" title="" alt="[Eek!]" src="gr_eek2.gif" /> Then throw on the short belt and 12.3s seems attainable with the stock converter. The PT4400 would just be icing on the cake. But screw all of that, I'm putting in the Yank first! <img border="0" title="" alt="[Big Grin]" src="gr_grin.gif" /> I'll do all that other shtuff over the winter. <img border="0" alt="[chug]" title="" src="graemlins/gr_chug.gif" />

Derrick <img border="0" alt="[Burnout]" title="" src="graemlins/burnout.gif" />

P.S. Faisal, MAR's website says Sunday November 3rd T&T only. <img border="0" title="" alt="[Confused]" src="images/icons/confused.gif" />

Pull your interior and throw on a short-belt and you'll do even better. I ran low 12.7's with full interior and no short belt, but a buddy did and went 12.4's on the stock TC. <img border="0" title="" alt="[Smile]" src="gr_stretch.gif" />