Drag Racing Tech - Shakedown run with Grotts and ST3500...!

View Full Version : Shakedown run with Grotts and ST3500...!

INSSANE

09-02-2002, 12:01 AM

Bear in mind that all I ran with was BFG DRs on 16x8 rims, Grott 1 3/4 LTs wide open B4 the cats, a ST3500, shift kit on Level 2, D-Flow lid, and a poly trans mount. Not too much. No weight reduction beyond !spare and ! back seat. No tuning and NO suspension beyond what stock on an SS.

With a 1.79 60ft the car ran a 12.58 @ 107.8 and that's with bouncing off the rev limiter on the 2-3 shift.

I did manage a 1.62 60ft, but on the 2-3 shift I hit the rev limiter for more than a full second and the car only ran a 13.2 @ 102. DAMN!

I will raise the shift points, bump the limiter, have TQ management removed and my ASP UD pulley will go in.

As is, with that 1.62 I should have been 12.30s. With the tiny tuning and pulley and a similar 60 ft to the 1.6, I'm hoping for the 12.10s!!! If not better.

OK. Analyze my run and tell me if my predictions are correct.

Thanks!
Nick

[ September 02, 2002, 12:02 AM: Message edited by: INSSANE ]

CHRISPY

09-03-2002, 10:03 AM

Good runs! <img border="0" alt="[cheers]" title="" src="graemlins/gr_cheers.gif" />
Get your shiftpoints figured out and you should go a lot quicker <img border="0" title="" alt="[Smile]" src="gr_stretch.gif" />
Cheers,
Chris

INSSANE

09-03-2002, 11:15 AM

Do you think my "guesstimates" are correct?
Nick

NASSty01

09-03-2002, 11:36 AM

ST3500 ROCKS!!!

I hit the limiter my 2-3 shift too, but only if I hook decent. Bouncing the limiter well before the line at my 1/8 track trapping 89.8mph'ish.

My 10.5" ET Streets can't hang with my ST3500. Going to 10" rims and 11.5" slicks next year for the track. I'm tired of losing because of my inconsistant launches. See my SOB thread (http://www.ls1tech.com/ubb/ultimatebb.php?ubb=get_topic;f=5;t=002332)

When my track is hooking decent, I get 1.60-.61 60fts run after run.

Rick

sweetTA

09-04-2002, 04:00 PM

I have no clue how you guys 60' so well with this thing. I cant 60' better than a 1.70 <img border="0" title="" alt="[Roll Eyes]" src="images/icons/rolleyes.gif" />

INSSANE

09-04-2002, 04:52 PM

Practice and a well prepped track.
Nick

CamaroCain

09-04-2002, 07:24 PM

<blockquote>quote:<hr />Originally posted by sweetTA:
I have no clue how you guys 60' so well with this thing. I cant 60' better than a 1.70 <img border="0" title="" alt="[Roll Eyes]" src="images/icons/rolleyes.gif" /> <hr /></blockquote>Same here, low 1.7's but that is with 265/40-17 tires on the front with those Z06 wheels and some 16" ET Streets on the rear on firebird wheels. Have some convo pro fronts on the way, hoping that will help out a bit, but who knows, maybe i just SUCK <img border="0" title="" alt="[Sad]" src="gr_sad.gif" />

Lynda

TanRchy

09-04-2002, 07:37 PM

<blockquote>quote:<hr />Originally posted by INSSANE:

With a 1.79 60ft the car ran a 12.58 @ 107.8 and that's with bouncing off the rev limiter on the 2-3 shift.
<hr /></blockquote>Dude?! Hey thats a good run. But my question is: How did you E.T. so low with only 107.8MPH? The reason i ask is that i ran a 13.22@109 with my car with only a lid, springs and DR's and no launch (still have a 10 bolt, dont want to break anything) my 60ft was 2.1 i think. So if i launch better and get lets say a 1.7 60ft i can be in the 12's or run faster than you? <img border="0" title="" alt="[Confused]" src="images/icons/confused.gif" /> Sorry im new to drag racing. <img border="0" title="" alt="[Smile]" src="gr_stretch.gif" />

sweetTA

09-04-2002, 08:19 PM

<blockquote>quote:<hr />Originally posted by CamaroCain:
Same here, low 1.7's but that is with 265/40-17 tires on the front with those Z06 wheels and some 16" ET Streets on the rear on firebird wheels. Have some convo pro fronts on the way, hoping that will help out a bit, but who knows, maybe i just SUCK <img border="0" title="" alt="[Sad]" src="gr_sad.gif" />

Lynda<hr /></blockquote>Basically the same thing I'm doing, 17" aftermarket wheels up front, ET's on 'stock bird wheels in the rear....

MysticZ28

09-04-2002, 08:27 PM

12.3s ... definitely. You'll need to find about 3 more mph to put you in the 12.1 range - get your pully and tuning should do it ... welcome to bolt-on 11s hunt. <img border="0" alt="[cheers]" title="" src="graemlins/gr_cheers.gif" />

[ September 05, 2002, 12:55 AM: Message edited by: MysticZ28 ]

INSSANE

09-04-2002, 08:42 PM

Tan...do you have an M6? If so, that's why the MPH is higher.

Yeah, with the quick tune, the pulley, and a super sucker or FTRA, I'll prob. find the MPH.
Thanks for the good words!
Nick

TanRchy

09-04-2002, 09:37 PM

yea i have a M6

98TAauto

09-04-2002, 10:12 PM

<blockquote>quote:<hr />Originally posted by TanRchy:
yea i have a M6<hr /></blockquote>M6's usually always trap better.. M6's rule on the street, and A4's rule from dead stop dragging <img border="0" title="" alt="[Big Grin]" src="gr_grin.gif" />

but back to the first post..

for stock internals dont raise the limiter above 6300! Its not gonna help you do squat. You need to lower your 2-3(not raise) shift points.

I had to lower mine -4 to get off the limiter with my vig3600.

Just lower by one untill you get off of it, and riase the limiter to 6300(6200stock)

awesome 60 though!!

wait till you cut a 1.5 or so <img border="0" title="" alt="[Wink]" src="gr_images/icons/wink.gif" /> and BTW, it can be donw on drag radials. Ive been 1.58 on 245/50/16 nittos, while others have been 1.55's <img border="0" title="" alt="[Smile]" src="gr_stretch.gif" /> So BFG's will hold for those 60's also

INSSANE

09-05-2002, 12:27 AM

Yeah...Speed Inc will work their magic.
Nick

NASSty01

09-05-2002, 11:28 AM

<blockquote>quote:<hr />Originally posted by TanRchy:
Dude?! Hey thats a good run. But my question is: How did you E.T. so low with only 107.8MPH? The reason i ask is that i ran a 13.22@109 with my car.....my 60ft was 2.1 i think. <hr /></blockquote>He had a better ET because of his better 60ft. Most of your ET is made up in your first 60ft.

Same mph + little better 60ft = alot better ET.

I haven't run the 1/4 with current setup, but I'm guessing I'd go thru the traps about 109-110, but since my 60ft is 1.60, I'd run a 12.2-12.3 or so. Given my POS trans shifts 2-3.

HOW TO LAUNCH YOUR ST3500: Brake the car to 3000rpm at the line and let her eat. Traction is a must! Disclaimer : If you're stalled at 3000+RPM for more than 3 seconds, you will go into Limp-Home Mode.

1.60 60ft ROCK! I can't wait for the 1.5's and 1.4's! <img border="0" title="" alt="[Smile]" src="gr_stretch.gif" />

[ September 05, 2002, 02:07 PM: Message edited by: NASSty01 ]

XFiveLiter

09-05-2002, 06:08 PM

<blockquote>quote:<hr />Originally posted by INSSANE:

I did manage a 1.62 60ft, but on the 2-3 shift I hit the rev limiter for more than a full second and the car only ran a 13.2 @ 102. DAMN!
<hr /></blockquote>Thats an awsome 60ft on drag radials <img border="0" alt="[hail]" title="" src="graemlins/gr_hail.gif" /> My best 60 on a DR is 1.67. Was this done at 41 or GLD? What was your 1/8 ET and MPH on that run? Just tryin' to figure out what I would run if I could get my 60s down that low. Thanks

INSSANE

09-05-2002, 09:50 PM

Just smoke the tires literally until you see smoke for about 5 seconds or so and let off the brake and ease the gas so you roll out of the water box. Stop the car and give it a nice punch to make sure you'll hook.

That's how I cut the good 60ft. My 1.62 was done by stalling the car at 900RPMs. This was done at US41.

My 1/8 on the 1.62 run was 7.991 at 85.41mph but that may be a little inaccurate because of the shifting prob.
The 1.79 60 got me a 8.014 at 85.87mph. That was the 12.5 run which is much more accurate.
Nick

NASSty01

09-05-2002, 11:50 PM

<blockquote>quote:<hr />Originally posted by INSSANE:
Just smoke the tires literally until you see smoke for about 5 seconds or so and let off the brake and ease the gas so you roll out of the water box. Stop the car and give it a nice punch to make sure you'll hook.

<hr /></blockquote>You do your burnout IN the water? If so, do you realize that all you're doing is throwing water up into your wheel well? I'm talking a shitload of water. You burn 'em out of the box, and the water drips right back down onto your tire.

I sit right behind the burnout box for atleast 2 hours practicing my lights in between runs every Saturday. I watch all kinds of burnouts and the ones that throw water all over the place aren't pretty.

Dry hops will take the good coating of hot rubber off the tire. Just pull to the line.

Rick

[ September 05, 2002, 11:55 PM: Message edited by: NASSty01 ]

INSSANE

09-05-2002, 11:53 PM

Well if that's the case I must be making up my 1.62 60ft. Ask a tech why they spray the water. They don't do it for fun and if you do it the right way...ie how I do it, water won't drip.
Nick <img border="0" title="" alt="[Roll Eyes]" src="images/icons/rolleyes.gif" />

[ September 05, 2002, 11:59 PM: Message edited by: INSSANE ]

NASSty01

09-06-2002, 12:01 AM

I didn't say you were lying. I also didn't say you could never possibly hook doing your burnout that way.

I watch atleast 100 burnouts every Sat. night. I'm about 5-8ft from the car, behind/on the side of the Burnout backstop.

Every guy that starts his burnout IN the water, when he's done I watch the water RUN, not drip, but run off his fender.

If you don't believe me, have somebody watch you do your burnout.

[ September 06, 2002, 12:02 AM: Message edited by: NASSty01 ]

INSSANE

09-06-2002, 12:03 AM

I never have a problem if I roll out of the box after burning out. It's the people that burnout and stop the rear wheels while still in the water and then move out that have the problem.
Nick

NASSty01

09-06-2002, 12:13 AM

<blockquote>quote:<hr />Originally posted by INSSANE:

With a 1.79 60ft the car ran <hr /></blockquote>So, you never have a problem huh?

Look man, I'm just tryin to help a brother out.

I've seen all kinds of burnouts up close. I'm talking within 10ft from the car. I don't care what you do, if you start your burnout while IN the water, you're going to throw water into your wheelwell. Period..no if's, and's or but's about it.

<img border="0" alt="[cheers]" title="" src="graemlins/gr_cheers.gif" />

sweetTA

09-06-2002, 12:41 AM

I ususally do a quick spin in the water to get the tires wet, pull forward 3 or 4 feet and do my burnout...

My ST3500 wants to push the front tires at about 2800...

My best 60's seem to come on a 2000-2200 launch, but they are still quite a bit behind everybody else's

98TAauto

09-06-2002, 07:39 AM

i only back into like like 2 inches of the water box. Just where its damp and not water standing

then i start spinning for like 3 seconds, let off brake and roll ahead like 4 ft outta all water for sure and continue to brake and heat the tires up for 4-5 seconds, then let off brake again and burn them as close to the tree as i can <img border="0" title="" alt="[Big Grin]" src="gr_grin.gif" />

John force here <img border="0" title="" alt="[Wink]" src="gr_images/icons/wink.gif" /> LOL

but doing any burnout in the water box does sling water on the wells which will drip on the tires. Its a big reason why many people cant hook on drag radials and wonder why. As long as you keep doing your burnout when your outta the water up to the tree then you are probably fine.

then you get the smart ones that drive threw it and do no burnout <img border="0" title="" alt="[Eek!]" src="gr_eek2.gif" />

CamaroCain

09-06-2002, 08:39 AM

<blockquote>quote:<hr />Originally posted by INSSANE:
Yeah...Speed Inc will work their magic.
Nick<hr /></blockquote>I love those guys, Tom and Larry are the best <img border="0" title="" alt="[Big Grin]" src="gr_grin.gif" />

XFiveLiter

09-06-2002, 07:01 PM

<blockquote>quote:<hr />Originally posted by INSSANE:
Just smoke the tires literally until you see smoke for about 5 seconds or so and let off the brake and ease the gas so you roll out of the water box. Stop the car and give it a nice punch to make sure you'll hook.

That's how I cut the good 60ft. My 1.62 was done by stalling the car at 900RPMs. This was done at US41.

My 1/8 on the 1.62 run was 7.991 at 85.41mph but that may be a little inaccurate because of the shifting prob.
The 1.79 60 got me a 8.014 at 85.87mph. That was the 12.5 run which is much more accurate.
Nick<hr /></blockquote>Thanks, it looks like our cars run very similar. Wednesday night I went to 41 and my best run was a 12.33 @ 111.95 (1.74) 1/8 was 7.90 @ 87.38.

When you get your shift points sorted out and stop hitting the rev limiter, w/that 1.62 60 you should run 12.2s.

41 does zero track prep on T&T nights thats why my 60s sucked. Would have had a new best w/a better 60. I always go around the water, back into it, roll about a foot past the edge of the water and start my burnout. I watch the mirrors 'till I see 'em smoke and hold it for a couple seconds.

INSSANE

09-06-2002, 10:52 PM

Can you PM or post your mods so I can compare?
I'll look at my 1/8 later, but I think it was VERY close to the one you posted.
Nick

XFiveLiter

09-07-2002, 10:18 PM

No problem, mods are...

Vig3200, lid (no kidding), FRA, SFCs, LCAs, !swayar, Macs w/orp, SS catback w/QTP cutout, 3.73s, Nittos and skinnies. Race weight is about 3475# or so. Thats all I can think of right now.

Today at Byron the best I could do in 95 degree heat and high humidity was 12.63 @ 108.45 (1.70) on ET Streets <img border="0" title="" alt="[Sad]" src="gr_sad.gif" />

F8L Z71

09-10-2002, 01:25 AM

You want to know how to keep the ST3500 off the limiter durring 2-3rd shift?

Get rid of any ported MAFs and go back to stock or use a calibrated MAF. And/or leave it in OD durring the run. If I left it in 3rd I would hit the limiter, but in OD it would not.

INSSANE

09-10-2002, 03:00 AM

Don't have a ported maf, only descreened. I'll try the OD though. Some have said that even in OD they get it.
Nick

F8L Z71

09-10-2002, 08:57 AM

Can't hurt to try. This is obviously when you are for sure that your RPM is correct shift point wise. Horked for me though. It just sucked when you forget to put in OD and start slamming the limiter again. <img border="0" title="" alt="[Sad]" src="gr_sad.gif" />

Only did it with my ST-3800 too, never with my PT-4400. <img border="0" title="" alt="[Confused]" src="images/icons/confused.gif" />

Good luck bro

Supertrapped

09-11-2002, 09:36 AM

Awesome times. Gotta love the ST3500. I gained a whole second with that converter, and I still have the 2:73s in it. <img border="0" title="" alt="[Big Grin]" src="gr_grin.gif" />