LS1TECH - Camaro and Firebird Forum Discussion

Carbureted LSX Forum Carburetors | Carbed Intakes | Carb Tuning Tips for LSX Enthusiasts

Plug gap ??

Thread Tools
 
Search this Thread
 
Old Feb 17, 2011 | 04:21 PM
Share
  #1  
stewdy1's Avatar
stewdy1
Thread Starter
On The Tree
iTrader: (3)
 
Joined: Jan 2010
Posts: 126
Likes: 0
From: Houston
Default Plug gap ??
What should I gap my plugs to

Tr6 plugs
Lq4
Patriot 243 heads
Trex cam
Hp950 carb
200 shot
Reply
0
Old Feb 17, 2011 | 06:52 PM
Share
  #2  
xpndbl3's Avatar
xpndbl3
TECH Fanatic
iTrader: (23)
 
Joined: Dec 2006
Posts: 1,568
Likes: 2
From: orland park, IL
Default
.035 n/a


you shouldn't be running tr6 on a 200 shot, you need plugs in the 8-9 range IMO and that should be much tighter. .023-.026 for a starting point.
Reply
0
Old Feb 17, 2011 | 07:40 PM
Share
  #3  
ZONES89RS's Avatar
ZONES89RS
In-Zane Moderator
15 Year Member
iTrader: (25)
 
Joined: Jan 2007
Posts: 11,941
Likes: 33
From: Conroe, Texas
Default
Mine are gapped at .045 right now.
Reply
0
Old Feb 17, 2011 | 07:55 PM
Share
  #4  
Luke_PCScarbs's Avatar
Luke_PCScarbs
Staging Lane
 
Joined: Jan 2011
Posts: 69
Likes: 0
From: Topeka, KS
Default
Gap them .035
Reply
0
Old Feb 17, 2011 | 09:27 PM
Share
  #5  
team39763's Avatar
team39763
TECH Enthusiast
iTrader: (3)
 
Joined: Oct 2005
Posts: 726
Likes: 0
Default
.035 is good even without nitrous?
Reply
0
Old Feb 17, 2011 | 09:44 PM
Share
  #6  
Luke_PCScarbs's Avatar
Luke_PCScarbs
Staging Lane
 
Joined: Jan 2011
Posts: 69
Likes: 0
From: Topeka, KS
Default
Originally Posted by team39763
.035 is good even without nitrous?
Absolutely.
Reply
0
Old Feb 17, 2011 | 10:24 PM
Share
  #7  
stewdy1's Avatar
stewdy1
Thread Starter
On The Tree
iTrader: (3)
 
Joined: Jan 2010
Posts: 126
Likes: 0
From: Houston
Default
I did them around 30 31 should I go back or leave them
Reply
0

Trending Topics

Old Feb 18, 2011 | 06:52 AM
Share
  #8  
ZONES89RS's Avatar
ZONES89RS
In-Zane Moderator
15 Year Member
iTrader: (25)
 
Joined: Jan 2007
Posts: 11,941
Likes: 33
From: Conroe, Texas
Default
I would open them up.
Reply
0
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 Feb 18, 2011 | 06:53 AM
Share
  #9  
speedtigger's Avatar
speedtigger
Old School Heavy
15 Year Member
Photogenic
Liked
Loved
iTrader: (16)
 
Joined: May 2010
Posts: 8,835
Likes: 84
From: Florida
Default
This is interesting. Most of the EFI guys say they are running gaps from .045" to .055".
Reply
0
Old Feb 18, 2011 | 06:58 AM
Share
  #10  
ZONES89RS's Avatar
ZONES89RS
In-Zane Moderator
15 Year Member
iTrader: (25)
 
Joined: Jan 2007
Posts: 11,941
Likes: 33
From: Conroe, Texas
Default
And you see the carbs going .035, so i settled in the middle at .045, LOL.
Reply
0
Old Feb 18, 2011 | 09:29 AM
Share
  #11  
team39763's Avatar
team39763
TECH Enthusiast
iTrader: (3)
 
Joined: Oct 2005
Posts: 726
Likes: 0
Default
I've read in a few places that as long as your ignition is strong enough to handle it, you want to run the bigger gap. And like was just mentioned, the efi guys seem to be running big gaps like .055 and around there. I'll try the small gap on my next plug swap.
Reply
0
Old Feb 18, 2011 | 01:17 PM
Share
  #12  
ZONES89RS's Avatar
ZONES89RS
In-Zane Moderator
15 Year Member
iTrader: (25)
 
Joined: Jan 2007
Posts: 11,941
Likes: 33
From: Conroe, Texas
Default
Exactly, thats why i dont want to run a gap smaller than .045.
Reply
0
Old Feb 18, 2011 | 01:21 PM
Share
  #13  
speedtigger's Avatar
speedtigger
Old School Heavy
15 Year Member
Photogenic
Liked
Loved
iTrader: (16)
 
Joined: May 2010
Posts: 8,835
Likes: 84
From: Florida
Default
Might be interesting to see what MSD says.
Reply
0
Old Feb 18, 2011 | 02:28 PM
Share
  #14  
NemeSS's Avatar
NemeSS
TECH Senior Member
20 Year Member
Photogenic
Photoriffic
Shutterbug
iTrader: (127)
 
Joined: Sep 2005
Posts: 6,889
Likes: 9
From: Houston,TX
Default
I've always ran .040
Reply
0
Old Feb 18, 2011 | 03:19 PM
Share
  #15  
speedtigger's Avatar
speedtigger
Old School Heavy
15 Year Member
Photogenic
Liked
Loved
iTrader: (16)
 
Joined: May 2010
Posts: 8,835
Likes: 84
From: Florida
Default
I just spoke to MSD tech and they said that it is related to the compression ratio. He said for 10:1 compression he recommends .040" to .045". As the compression goes up, tighten it up. For example: he said if you hit 11+:1 compression you might go .035". He did indicate that this was not a specific stead fast rule but he did say never go over .060".
Reply
0
Old Feb 18, 2011 | 05:39 PM
Share
  #16  
ZONES89RS's Avatar
ZONES89RS
In-Zane Moderator
15 Year Member
iTrader: (25)
 
Joined: Jan 2007
Posts: 11,941
Likes: 33
From: Conroe, Texas
Default
Sweet, i am spot on then.
Reply
0
Old Feb 19, 2011 | 05:51 AM
Share
  #17  
six.o's Avatar
six.o
Teching In
iTrader: (1)
 
Joined: Jun 2010
Posts: 5
Likes: 0
From: ms
Default
I run .030 on my carb setup.I opened the gap up one time on spray lets just say it didnt like it thats all.
Reply
0
Old Feb 19, 2011 | 10:37 AM
Share
  #18  
3pedals's Avatar
3pedals
8 Second Club
15 Year Member
iTrader: (3)
 
Joined: Mar 2007
Posts: 1,931
Likes: 6
From: WPG MB
Default
for the guys running wide gaps: if you start having high rpm miss-fire problems, then start tightening the gap.
As cylinder pressure goes up, the resistance across the plug gap goes up, and the ignition has a more difficult time to fire the plug.
Reply
0
Old Feb 19, 2011 | 03:07 PM
Share
  #19  
six.o's Avatar
six.o
Teching In
iTrader: (1)
 
Joined: Jun 2010
Posts: 5
Likes: 0
From: ms
Default
Originally Posted by 3pedals
for the guys running wide gaps: if you start having high rpm miss-fire problems, then start tightening the gap.
As cylinder pressure goes up, the resistance across the plug gap goes up, and the ignition has a more difficult time to fire the plug.
Thats what mine was doing so i closed the gap back up
Reply
0
Tags
Back to Subforum
Carbureted LSX Forum
View Next Unread
5.3l cam question




Advanced Search

All times are GMT -5. The time now is 04:26 PM.

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 | 2026-06-09 14:55:56


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