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

Track results

Thread Tools
 
Search this Thread
 
Old Jul 7, 2012 | 01:39 AM
  #1  
Wicked94Z's Avatar
Thread Starter
10 Second Club
iTrader: (26)
 
Joined: Jul 2005
Posts: 3,725
Likes: 1
From: Spokane, Wa
Default Track results

New crank trigger wheel fixed my ignition issues....

Ran my car today at the track, did a best of 7.08 at 97.xx on a 1.55 60'. Only got one good pass because I broke the throttle cable right after the 330' on what would have been a 6.9x run. Data log on broken cable pass showed AFR of 13.6 (!!!) which is extremely lean for e85, and explains why the car felt pretty lazy in 1st gear.

Picking up 2 or 3 new throttle cables from the pick a part place tomorrow morning for racing again tomorrow. DA was 3500+ today and will be 4000+ tomorrow but I'll get in the 6s for sure when I get the fueling dialed in, e85 likes to be run ~11.80 indicated AFR. Suspension still needs some work, car was down on power and still spinning. Haven't played with shift points or timing, shifted at 7600 and seemed to make good power there, I think theres a lot of power on the table in the timing/AFR. Car picked up 2.5 mph open headers vs through the mufflers! Will update tomorrow...
Reply
Old Jul 7, 2012 | 08:05 AM
  #2  
Speedy's Avatar
TECH Enthusiast
 
Joined: Jun 2002
Posts: 634
Likes: 0
From: In the garage fixing LT1
Default

Good times. What was the MPH?
Reply
Old Jul 7, 2012 | 08:10 AM
  #3  
joelster's Avatar
10 Second Club
15 Year Member
Photogenic
Liked
Loved
 
Joined: Oct 2007
Posts: 2,630
Likes: 28
Default

I'm pretty sure a throttle cable from an S-10 blazer works, but check it yourself when you get to the yard. There might be a tiny difference. There will be a lot of blazers in there compared to f-bods. Good runs for first time out, plus air like that sucks.
Reply
Old Jul 7, 2012 | 08:27 AM
  #4  
trilkb's Avatar
TECH Addict
iTrader: (4)
 
Joined: Jul 2005
Posts: 2,106
Likes: 80
Default

NICE! That thing should be moving pretty good. Good luck with it. Sounds like 9 second 1/4 mile times might be in the future?


I mean...Just another slow LT1 that cant rev high.
Reply
Old Jul 7, 2012 | 10:47 AM
  #5  
Puck's Avatar
TECH Veteran
iTrader: (17)
 
Joined: Oct 2006
Posts: 4,152
Likes: 6
Default

Glad to see you making progress again.

Just getting the suspension dialed in should have you damn close to some 10-ohs at sea level as-is.
Reply
Old Jul 7, 2012 | 12:04 PM
  #6  
Birdie2000's Avatar
TECH Resident
iTrader: (15)
 
Joined: Jun 2003
Posts: 787
Likes: 0
From: Traverse City, MI
Default

Very nice! What exhaust are you running that cost you 2.5mph??
Reply
Old Jul 7, 2012 | 01:11 PM
  #7  
Wicked94Z's Avatar
Thread Starter
10 Second Club
iTrader: (26)
 
Joined: Jul 2005
Posts: 3,725
Likes: 1
From: Spokane, Wa
Default

Going to try the ram air today... I was pulling 1.5" of vacuum through the filter yesterday. Added about 15% fuel at WOT as well, should have a good result first pass. I run 3 mufflers per side for the street, full size pypes race-pros, bullets, and auger inserts.
Reply
Old Jul 7, 2012 | 04:17 PM
  #8  
94LTZ's Avatar
TECH Resident
iTrader: (5)
 
Joined: Jun 2009
Posts: 750
Likes: 1
Default

i have a cable if you need it. pm me.
Reply
LS1 Tech Stories

The Best V8 Stories One Small Block at Time

story-0

6 Gifts Neither Your Dad Nor Grad Will Shove Into the 'Trinket Drawer'

 Brett Foote
story-1

Topdon ONE vs. Artidiag 800 BT2: Which is the Diagnostic Tablet For You?

 Pouria Savadkouei
story-2

Gas Monkey Built a 6-Wheel Ferrari Testarossa With a Corvette LT4 Engine

 Verdad Gallardo
story-3

7 Most Reliable High-Performance Engines GM Has Ever Built

 Verdad Gallardo
story-4

Amazing '71 Camaro Restomod Is Modern Muscle Car Under the Skin

 Verdad Gallardo
story-5

6 Common C5 Corvette Failures and What's Involved In Repairing Them

 Pouria Savadkouei
story-6

Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph

 Verdad Gallardo
story-7

Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked

 Pouria Savadkouei
story-8

Top 10 Most Powerful Chevy Trucks Ever Made!

 
story-9

Hennessey's New Supercharged Silverado ZR2 Has 700 HP

 Verdad Gallardo
Old Jul 8, 2012 | 03:55 AM
  #9  
Wicked94Z's Avatar
Thread Starter
10 Second Club
iTrader: (26)
 
Joined: Jul 2005
Posts: 3,725
Likes: 1
From: Spokane, Wa
Default

Well it was pretty hot today, 4500 DA to start and the car was struggling for the first few passes. I was having bad stumbling issues come up on the two step, and then stumbling as the motor hit the converter. Went from mid 1.6 60' dead hooking to two 1.49s with plenty of wheelspeed and picking up the fronts 4-5". Got my 6.99 at 98mph on my 5th and last pass of the day. Still having a few issues on the two step and I feel there is a couple hundredths in 60' there. Mostly concentrating right now on getting the car to leave, then I'll work on shift points and timing to make some MPH.
Reply
Old Jul 8, 2012 | 04:06 AM
  #10  
Wicked94Z's Avatar
Thread Starter
10 Second Club
iTrader: (26)
 
Joined: Jul 2005
Posts: 3,725
Likes: 1
From: Spokane, Wa
Default

Suspension settings for last pass were full loose on front qa1s, 8 on SA rear qa1s. Neutral drag bar, -2.5° pinion, lowest LCA hole (barely uphill). 11 psi in stiffwall 28x10.5 hoosiers. A DA rear shock would help, I need more compression stiffness to control the rear wanting to unload after the initial hit, and setting them on 8 is slowing the rear planting the tire and letting it spin as opposed to 7, which planted great but bounced too much. It might be worth a try to raise the LCAs one hole, and loosen the rear shocks... mike v and joelster where are you??
Reply
Old Jul 8, 2012 | 07:58 PM
  #11  
joelster's Avatar
10 Second Club
15 Year Member
Photogenic
Liked
Loved
 
Joined: Oct 2007
Posts: 2,630
Likes: 28
Default

Try adding a little air in the rear so they don't compress as much on the hit and then have all of that stored energy. On a track that hooks good, my tires like 13lbs. Try to get someone to video a launch. It's not always easy to tell what is happening from the driver seat. 4500da is horrid, lol. Your car will be 10's easy. A 6.99 at 98 would creep in to a 10.95 even in that **** air.
Reply
Old Jul 8, 2012 | 08:13 PM
  #12  
Wicked94Z's Avatar
Thread Starter
10 Second Club
iTrader: (26)
 
Joined: Jul 2005
Posts: 3,725
Likes: 1
From: Spokane, Wa
Default

Yea had my friend getting vids from a 3/4 view, didn't think about raising tire pressure and it makes perfect sense. It seemed like tightening the rear shocks did little to control the unloading but 1 click of stiffness seemed to add 3/4-1 turns of the tire before really moving the car forward. Looser shock for more hit, more tire psi for less stored energy in the tire and more moving the car forward. Yea track temps were high, IATs were ~20° warmer than ambient temp pulling from the foglight openings, i was seeing 100-105° until the sun went down and the track consequently closed Gonna take the car out next week and add 1/2 lbs at a time without touching the tune, the car should eventually 60' at least a tenth quicker!
Reply
Old Jul 9, 2012 | 11:08 AM
  #13  
sweetbmxrider's Avatar
TECH Addict
iTrader: (13)
 
Joined: Sep 2008
Posts: 2,768
Likes: 3
From: jersey shore
Default

I thought your car was faster, all that cam and no go.....sucks.
Reply
Old Jul 9, 2012 | 02:11 PM
  #14  
Wicked94Z's Avatar
Thread Starter
10 Second Club
iTrader: (26)
 
Joined: Jul 2005
Posts: 3,725
Likes: 1
From: Spokane, Wa
Default

I'll take a 6.99 in 4000+ ft air with 6 passes on the car
Reply
Old Jul 9, 2012 | 05:34 PM
  #15  
trilkb's Avatar
TECH Addict
iTrader: (4)
 
Joined: Jul 2005
Posts: 2,106
Likes: 80
Default

No ****, those are good times!

If my car went 6.99 in 6 passes Id crap my pants. What people dont realize is that sometimes well built fast cars only get it to go down the track right 1 or 2 times a night/outing if that. Most of the other passes **** goes wrong and it just doesnt line up like it should. Getting a time that quick with that little seat time proves that its a beast.
Reply
Old Jul 9, 2012 | 06:14 PM
  #16  
joelster's Avatar
10 Second Club
15 Year Member
Photogenic
Liked
Loved
 
Joined: Oct 2007
Posts: 2,630
Likes: 28
Default

I've said it before and I'll say it again, most cars shave an honest .5 second off of their times from simple testing and tuning. Wicked's car will be rocking some 6.5's with a few tweaks here and there, spending maybe $50 on different plugs, etc. Never get let down on what a car runs fresh from a build and right off of the trailer. LOL at sweetbmxrider talking smack about a 10-second street LT1 car. What do you drive?
Reply
Old Jul 9, 2012 | 06:31 PM
  #17  
Dave357LT1's Avatar
TECH Enthusiast
 
Joined: May 2011
Posts: 531
Likes: 0
Default

What heads do you run? Why would you not tuch the tune and work on ur 60' if your saying its very lean. If you dial it in then add more power then you will be back to dialing in the 60' with the added power.
Reply
Old Jul 9, 2012 | 07:47 PM
  #18  
Wicked94Z's Avatar
Thread Starter
10 Second Club
iTrader: (26)
 
Joined: Jul 2005
Posts: 3,725
Likes: 1
From: Spokane, Wa
Default

There are some old AFR castings on it, measure about 214-216cc. The tune is safe at this point, and from 5000-6200 is pretty close, and that's where the car launches... I wouldn't waste my time otherwise. I'd like to run 6.699 NA by the end of the season (October) and 5.999 on nitrous. Not too lofty but not easy either. Need the cage installed, I let off at the 1/8 and I'm coasting to 11.70s at 80mph

Edit: Even with a 4" oval intake from fog light opening. I still saw the same 1.5" of vacuum and the car going rich above 7000 with no improvement in MPH over the filtered intake. TB might be worth a few HP I think?

Last edited by Wicked94Z; Jul 9, 2012 at 07:52 PM.
Reply
Old Jul 9, 2012 | 08:22 PM
  #19  
speed_demon24's Avatar
11 Second Club
iTrader: (6)
 
Joined: Dec 2001
Posts: 4,609
Likes: 2
From: Ocala, FL
Default

Originally Posted by Wicked94Z
There are some old AFR castings on it, measure about 214-216cc. The tune is safe at this point, and from 5000-6200 is pretty close, and that's where the car launches... I wouldn't waste my time otherwise. I'd like to run 6.699 NA by the end of the season (October) and 5.999 on nitrous. Not too lofty but not easy either. Need the cage installed, I let off at the 1/8 and I'm coasting to 11.70s at 80mph

Edit: Even with a 4" oval intake from fog light opening. I still saw the same 1.5" of vacuum and the car going rich above 7000 with no improvement in MPH over the filtered intake. TB might be worth a few HP I think?
Venturi effect.
Reply
Old Jul 9, 2012 | 08:30 PM
  #20  
Shownomercy's Avatar
Man-Crush Warning
15 Year Member
Photogenic
Photoriffic
Shutterbug
iTrader: (1)
 
Joined: Jun 2009
Posts: 3,197
Likes: 130
Default

Originally Posted by sweetbmxrider
I thought your car was faster, all that cam and no go.....sucks.
Sounds like a familiar car, all that cam, and no shifting..sucks.
Reply



All times are GMT -5. The time now is 09:21 AM.

story-0
6 Gifts Neither Your Dad Nor Grad Will Shove Into the 'Trinket Drawer'

Don't get dad new socks or a grill brush this year.

By Brett Foote | 2026-06-04 18:13:20


VIEW MORE
story-1
Topdon ONE vs. Artidiag 800 BT2: Which is the Diagnostic Tablet For You?

Slideshow: We take a close look at the ONE and Artidiag 800BT2 diagnostic tools from Topdon and the reasons to buy one over the other.

By Pouria Savadkouei | 2026-05-28 11:05:11


VIEW MORE
story-2
Gas Monkey Built a 6-Wheel Ferrari Testarossa With a Corvette LT4 Engine

Slideshow: The controversial Ferrari F6 swaps its original flat-12 for a Corvette Z06-derived LT4 V8 and sends power to four rear wheels through a custom-built drivetrain.

By Verdad Gallardo | 2026-05-26 18:23:54


VIEW MORE
story-3
7 Most Reliable High-Performance Engines GM Has Ever Built

Slideshow:These GM engines didn't just make huge power, they survived abuse, boost, track days, and six-digit mileage with a reputation for refusing to quit.

By Verdad Gallardo | 2026-05-21 16:45:27


VIEW MORE
story-4
Amazing '71 Camaro Restomod Is Modern Muscle Car Under the Skin

Slideshow: This heavily modified 1971 Camaro mixes classic muscle car styling with a fifth-generation Camaro interior and modern LS3 power.

By Verdad Gallardo | 2026-05-12 18:06:42


VIEW MORE
story-5
6 Common C5 Corvette Failures and What's Involved In Repairing Them

Slideshow: From wobbling harmonic balancers to failed EBCMs, these are the issues that define long-term C5 ownership and what repairs typically involve.

By Pouria Savadkouei | 2026-05-07 18:44:57


VIEW MORE
story-6
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph

Slideshow: A modern Camaro transformed into a retro icon, this limited-run "Bandit" build blends nostalgia with brute force in a way few revivals manage.

By Verdad Gallardo | 2026-04-21 13:57:02


VIEW MORE
story-7
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked

Slideshow: Cadillac didn't just crash the high-performance luxury vehicle party, it showed up loud, supercharged, and occasionally a little unhinged...

By Pouria Savadkouei | 2026-04-16 10:05:15


VIEW MORE
story-8
Top 10 Most Powerful Chevy Trucks Ever Made!

Slideshow: Top ten most powerful Chevy trucks ever made

By | 2026-03-25 09:22:26


VIEW MORE
story-9
Hennessey's New Supercharged Silverado ZR2 Has 700 HP

Slideshow: Hennessey has turned the Silverado ZR2 into a 700-hp off-road monster with supercharged V8 power and a limited production run.

By Verdad Gallardo | 2026-03-24 18:57:52


VIEW MORE