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

Does anyone know the stock timing...

Thread Tools
 
Search this Thread
 
Old Aug 29, 2008 | 01:40 AM
  #1  
LM97Z's Avatar
Thread Starter
TECH Fanatic
iTrader: (4)
 
Joined: Feb 2008
Posts: 1,291
Likes: 0
From: S.W. Missouri
Default Does anyone know the stock timing...

on an LT1 engine, its a 97 if that matters, just curious what it is on a stock PCM.
Reply
Old Aug 29, 2008 | 05:39 PM
  #2  
96capricemgr's Avatar
11 Second Club
iTrader: (1)
 
Joined: Sep 2004
Posts: 11,975
Likes: 15
Default

At what parameters? Timing is scaled off things like rpm, MAP, temp. There are 20 tables in tunercat that allow you to modify timing in some way. Things like decel fuel cutoff, EGR, low octane retard etc.
Reply
Old Aug 29, 2008 | 05:58 PM
  #3  
hyperzone's Avatar
TECH Fanatic
 
Joined: Jan 2005
Posts: 1,162
Likes: 0
From: St. Augustine, FL
Default

^^^ true.. If you can narrow it down to which one your looking for, I can check my stock tune file and try to get the values for ya. (using LT1edit here)
Reply
Old Aug 30, 2008 | 12:51 AM
  #4  
LM97Z's Avatar
Thread Starter
TECH Fanatic
iTrader: (4)
 
Joined: Feb 2008
Posts: 1,291
Likes: 0
From: S.W. Missouri
Default

Ok, i guess scatch it then lol, i'm old school, i was just curious for when i get the nitrous installed, but with all the tables, i'll just get it tuned.
Reply
Old Aug 30, 2008 | 07:16 AM
  #5  
wrd1972's Avatar
TECH Veteran
20 Year Member
Photogenic
Photoriffic
iTrader: (12)
 
Joined: Mar 2006
Posts: 4,668
Likes: 5
From: Central Kentucky
Default

Yup, the timing bounces all over the place from 22-42 degrees.
Reply
Old Aug 30, 2008 | 07:49 AM
  #6  
leadfoot4's Avatar
TECH Veteran
20 Year Member
iTrader: (1)
 
Joined: Sep 2005
Posts: 4,621
Likes: 11
From: Webster, NY
Default

Originally Posted by wrd1972
Yup, the timing bounces all over the place from 22-42 degrees.

Roger that!!
Reply
Old Aug 30, 2008 | 08:36 AM
  #7  
96capricemgr's Avatar
11 Second Club
iTrader: (1)
 
Joined: Sep 2004
Posts: 11,975
Likes: 15
Default

For nitrous I would strongly recommend an aftermarket ignition box with on demand retard and rev limiter at the very least and a window switch would bve a very good idea too. Mallory 685 is a good choice, some guys like MSD, whatever just use something.

Have the pcm based rev limiter set a good bit higher than you will set the box. The stock rev limiter cuts fuel which is instant death for the motor if that happens while spraying.
Reply
Old Aug 30, 2008 | 09:58 AM
  #8  
LM97Z's Avatar
Thread Starter
TECH Fanatic
iTrader: (4)
 
Joined: Feb 2008
Posts: 1,291
Likes: 0
From: S.W. Missouri
Default

Originally Posted by 96capricemgr
For nitrous I would strongly recommend an aftermarket ignition box with on demand retard and rev limiter at the very least and a window switch would bve a very good idea too. Mallory 685 is a good choice, some guys like MSD, whatever just use something.

Have the pcm based rev limiter set a good bit higher than you will set the box. The stock rev limiter cuts fuel which is instant death for the motor if that happens while spraying.
Glad you told me that about the fuel , theres a few running with no window switch or retard box, just slap it on & go.
Reply
LS1 Tech Stories

The Best V8 Stories One Small Block at Time

story-0

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

 Verdad Gallardo
story-1

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

 Pouria Savadkouei
story-2

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

 Verdad Gallardo
story-3

Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked

 Pouria Savadkouei
story-4

Top 10 Most Powerful Chevy Trucks Ever Made!

 
story-5

Hennessey's New Supercharged Silverado ZR2 Has 700 HP

 Verdad Gallardo
story-6

Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes

 Verdad Gallardo
story-7

Awesome K5 Blazer Restomod Comes With C7 Corvette Power

 Verdad Gallardo
story-8

10 Camaros You Should Never Buy

 
story-9

10 LS Engine Myths That Refuse to Die

 Verdad Gallardo
Old Aug 30, 2008 | 10:00 AM
  #9  
96capricemgr's Avatar
11 Second Club
iTrader: (1)
 
Joined: Sep 2004
Posts: 11,975
Likes: 15
Default

Yes you can run without safeties BUT it is very easy to lose a motor doing so.
Reply




All times are GMT -5. The time now is 04:03 PM.

story-0
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-1
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-2
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-3
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-4
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-5
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
story-6
Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes

Slideshow: A one-off sports car that looks like a vintage Italian exotic-but hides a C6 Corvette underneath-just sold for the price of a new mid-engine Corvette.

By Verdad Gallardo | 2026-03-23 18:53:41


VIEW MORE
story-7
Awesome K5 Blazer Restomod Comes With C7 Corvette Power

Slideshow: A heavily reworked 1972 K5 Blazer swaps its off-road roots for a low-slung street-focused build with modern V8 power.

By Verdad Gallardo | 2026-03-09 18:08:45


VIEW MORE
story-8
10 Camaros You Should Never Buy

Slideshow: There are thousands of used Camaros on the market but we think you should avoid these 10

By | 2026-02-17 17:09:30


VIEW MORE
story-9
10 LS Engine Myths That Refuse to Die

Slideshows: Which one of these myths do you believe?

By Verdad Gallardo | 2026-01-28 18:10:11


VIEW MORE