LT1-LT4 Modifications 1993-97 Gen II Small Block V8

Get ur done! New dyno #'s

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Old 07-22-2006, 10:53 AM
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No worries Brent, your times are a great start. My first run in my SR 396 ran 12.0@118.....after more practice and better weather (no other changes to tuning/motor) it went 11.3@126 NA. I had to really baby it off the line since I had a stock 10 bolt then.

Some of those negative DAs you get at HRP in the winter will really have you flyin' soon

Congrats man!
Jason
Old 07-22-2006, 11:35 AM
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Well I think the parts are good under it, BMR Kmem, upper/lowers, QA1s, will check these travel limiters out, sheesh man I never thought to try that last night, I bogged every single time even at 4600, thanks for the advice.

Question on setting the qa1s, they are single adjustable for now (12way), I have the fronts on 2 for the track and bumped the backs up to 5 from 4. I'm thinking I want the back stiffer though maybe around 10 but someone told me to try the opposite.

After hearing this I'm contemplating going back Sunday for sure, thanks again.

Originally Posted by Ed Wright
To run quick with a stick car, you need to pretty much leave on the rev limiter. If it won't hook leaving at 6500 or so, you need to work on the car and tires. A stick car needs to turn the tires over a few times when you drop the clutch, unlike an automatic car which needs to dead hook. If you have a factory PCM you won't be able to leave much higher than 7000. After you get it hooking that way, you will need to see Madman about some travel limiters for the front end. Wheel stands will then be an issue. That is how stick cars run quick. You will need good parts under it. I used to have a stick car than ran 121 mph, it was usually good for 10.80s then. I launched that one at 8500, but it was a little 292" sbc with a 750 carb. No torque, just flywheel inertia.

Good luck, Ed
Old 07-22-2006, 11:36 AM
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Originally Posted by JasonShort
No worries Brent, your times are a great start. My first run in my SR 396 ran 12.0@118.....after more practice and better weather (no other changes to tuning/motor) it went 11.3@126 NA. I had to really baby it off the line since I had a stock 10 bolt then.

Some of those negative DAs you get at HRP in the winter will really have you flyin' soon

Congrats man!
Jason
Thanks Jason, I never checked the DA last night, maybe someone there will pipe in that knows. It was hot but humidity seemed better than it's been a little.

So what's your beast running now?
Old 07-23-2006, 04:23 PM
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Nice numbers. This thread is worthless without sounds clips...
Old 07-24-2006, 09:09 AM
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Originally Posted by Turbo_6
Apparently the AFR headed guys are able to hit the 500rwhp mark also. There was some skepticism a few months back about this. Great numbers!

I passed 500 rwhp last year with LT4 heads & intake, through a 4.30 geared 12 bolt, 4l60E and un-locked 4400 RPM TC. I know I'm not the only one. You have to remember, only maybe 5% of the people that read this stuff ever post anything, and not everybody that does access the internet ever looks here, or even knows about this board, and that not *everybody* is on the internet. Some of my fastest customers dont even have email.
Old 07-24-2006, 01:35 PM
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Originally Posted by Ed Wright
To run quick with a stick car, you need to pretty much leave on the rev limiter. If it won't hook leaving at 6500 or so, you need to work on the car and tires. A stick car needs to turn the tires over a few times when you drop the clutch, unlike an automatic car which needs to dead hook. If you have a factory PCM you won't be able to leave much higher than 7000. After you get it hooking that way, you will need to see Madman about some travel limiters for the front end. Wheel stands will then be an issue. That is how stick cars run quick. You will need good parts under it. I used to have a stick car than ran 121 mph, it was usually good for 10.80s then. I launched that one at 8500, but it was a little 292" sbc with a 750 carb. No torque, just flywheel inertia.

Good luck, Ed

listen to this crazy guy he was twisting my arm one nite at the track about leaving on the limiter and when i finally got there it was going 11.0's@122+ making 400/415 its weird how it works but it was

heres a short vid of my car leaving that day as you can see it turns the tires several times http://media.putfile.com/burnoutandlaunch
Old 07-24-2006, 02:34 PM
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Nice numbers and nice runs for the first time out. Listen to the people here on the launching of the 6 speed. One thing I can add is get a 2 step. Makes a world of difference on how you can launch these things. I started out like you on the shocks...rears on 4 fronts on 2...once I got the suspension/tire thing worked out I started tightening everything up and kept 60'n better. On a good track you want the rears as hard as you can get em and still hook without spinning too bad. I eventually had to put my fronts on 12 because it was picken up up too easy. My best run so far is a 1.42 60' leaving at 6200 on the two step and bogged. Only picked the fronts up about 6" and set em back down. On a previous run I went a 1.43 and was packin up up pretty high with the fronts on 4. I plan on next outting leaving on the 2 step at about 6600 and see what happens. Good luck with the car..it should go mid-high 10s easy once you learn how to leave on it and knock the rust off your driving.

here is the 10.49 on a 1.43 http://95formula.ls2.com/Video/10.49.wmv
Old 07-24-2006, 02:40 PM
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Appreciate the advice coming, really can't wait to get back, it rained Sunday as it turns out, supposed to rain all week here in Houston, we'll see. I've got a couple buddies who filmed Friday night with good camcorders and am waiting for the email which I'll post up.

Last edited by BRETTINATOR; 07-24-2006 at 03:43 PM.
Old 07-24-2006, 02:53 PM
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Originally Posted by BRETTINATOR
Appreciate the advice coming, really can't wait to get back, it rained Sunday as it tourns out, supposed to rain all week here in Houston, we'll see. I've got a couple buddies who filmed Friday night with good camcorders and am waiting for the email which I'll post up.

Brett, let us know how it goes.

Ed
Old 07-24-2006, 03:04 PM
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Bad *** man



Originally Posted by 95 Formula
Nice numbers and nice runs for the first time out. Listen to the people here on the launching of the 6 speed. One thing I can add is get a 2 step. Makes a world of difference on how you can launch these things. I started out like you on the shocks...rears on 4 fronts on 2...once I got the suspension/tire thing worked out I started tightening everything up and kept 60'n better. On a good track you want the rears as hard as you can get em and still hook without spinning too bad. I eventually had to put my fronts on 12 because it was picken up up too easy. My best run so far is a 1.42 60' leaving at 6200 on the two step and bogged. Only picked the fronts up about 6" and set em back down. On a previous run I went a 1.43 and was packin up up pretty high with the fronts on 4. I plan on next outting leaving on the 2 step at about 6600 and see what happens. Good luck with the car..it should go mid-high 10s easy once you learn how to leave on it and knock the rust off your driving.

here is the 10.49 on a 1.43 http://95formula.ls2.com/Video/10.49.wmv
Old 07-24-2006, 03:46 PM
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Originally Posted by 95 Formula
One thing I can add is get a 2 step. Makes a world of difference on how you can launch these things.
Boy I feel dumb here, but what is a two-step? I assumed you were talking about dual stage nitrous at first ...then I figured double-adjustable shocks....then just gave up and figured I'd just ask the stupid question and learn something new ...

Last edited by BRETTINATOR; 07-24-2006 at 04:05 PM.
Old 07-24-2006, 04:01 PM
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Originally Posted by BRETTINATOR
Boy I feel dumb here, but what is a two-step? I assumed you were talking about dual stage nitrous at first ...then I figured double-adjustable shodcks....then just gave up and figured I'd just ask the stupid question and learn something new ...

2 step rev limiters, set one step at the RPM you want to leave (switch connected to the clutch pedal), and other step (clutch pedal up) at the RPM you want to use prevent engine damage if you miss a gear, etc. With RPM limitation stock LT1 PCM, I don't see a need for a modified engine. Just more crap to mess with. I could lay a brick on my accelerator and walk of, it couldn't hurt it's self.
Old 07-24-2006, 04:01 PM
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its a box that will plug into your rev limiter on a msd 6al. it has 2 or 3 rpm rev limiters that can be set by a rpm pill. What I do is I have a micro switch on the clutch pedal. When pedal is on the floor it activates my first rev limiter(two step, some call it a studder box). I can then put my foot on the floor and it will only rev to the 2 step rev limiter..in my case on that last run 6200. when I drop the hammer on it it goes back to the 2nd rev limiter which is 7500 or whaterver your pcm is set too. Basically..you leave the same every time and don't have to watch your rpms. You also leave harder since your foot is already on the floor and your wide open throttle. Its nice for a 6 speed car to be able to bump in then mash the clutch all the way...gas all the way and watch the lights instead of the rpm to launch at. If you listen closely to my launch in the video you cna hear it right before I leave..its sounds like a rev limiter.
Old 07-24-2006, 07:24 PM
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Originally Posted by Jeremy95TA
Nice numbers. This thread is worthless without sounds clips...
ok ok I was trying, buddy just emailed me this video
http://media.putfile.com/PEPPEs-1st-track-visit

Last edited by BRETTINATOR; 07-24-2006 at 09:49 PM.
Old 07-25-2006, 09:04 AM
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Originally Posted by BRETTINATOR
ok ok I was trying, buddy just emailed me this video
http://media.putfile.com/PEPPEs-1st-track-visit

props again on the first few runs

yeah it just needs some more pratice on the driving you will get it in time
Old 07-25-2006, 11:13 AM
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Awesome numbers. Leaves my 385 LT4 behind. (432/468)

Good job.
Old 07-25-2006, 11:40 AM
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Can't see the vid bret.. But that thing is a killer.. Hopefully get some decent #'s out of my setup as well so we can keep the LT1 alive.. I'll take a gander at them vid's when iget home!! i know it's kick ***!!!... As far as suspension goes.. Play w/ it.. you have all the tool's to do the job.. now to just figure out how to use them.. read read and read..
Old 07-25-2006, 12:21 PM
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Originally Posted by BRETTINATOR
hoping 500rwhp with good driving will give me mid 10s.
I was going to say, Russ needs to be behind the wheel and it would be QUICK.

Overall NICE numbers, I know it is fun!!

And after more reading, you should be leaving way higher than 4600, we left at 6000+ and hung on, the car will not bog.
Old 07-25-2006, 12:48 PM
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Originally Posted by Ed Wright
You should be well into the tens NA. Btw, all I have ever used was a stock GM Optipsark.

That's what I think. My 385 LT4 laid down considerably less power (A4, 3500 stall, 12 bolt etc. not exactly a dyno queen) of 432/468 and I am taking aim at 10.9's NA. It ran 11.40 with wheelspin in 95* air at Clash a couple months ago. Since then I have lightened the car by 36#, and mounted fresh tires, but am waiting for the biggest difference: cooler weather.
Hell, I may even lose 10# myself. I sure need to.
Oh, and I'm running an OEM Opti with Accel ignition and coil.
Old 07-25-2006, 12:51 PM
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Originally Posted by Shon Herron
I was going to say, Russ needs to be behind the wheel and it would be QUICK.

Overall NICE numbers, I know it is fun!!

And after more reading, you should be leaving way higher than 4600, we left at 6000+ and hung on, the car will not bog.
I can't wait to hit the track again, now that I have a new game plan for launching, but it looks like we will have rain for the entire week in Houston with this junk out in the Gulf.



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