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

Adding Mechanical Coolant Temp Gauge...HELP

Thread Tools
 
Search this Thread
 
Old Jun 24, 2009 | 10:23 AM
  #1  
Formulized94's Avatar
Thread Starter
TECH Enthusiast
iTrader: (68)
 
Joined: Nov 2004
Posts: 707
Likes: 0
From: Cleveland, TN
Default Adding Mechanical Coolant Temp Gauge...HELP

I am adding a mechanical coolant temp gauge to a 1997 LT1. I have good access to the plug that is in the passenger side head. However, it looks like you could stick a 3/8" ratchet in it and crank it out like on a rear end fill plug. That is not the case. The 3/8" ratchet is too big and a 1/4" ratchet is too small.

Is there a socket set I can buy to get this plug out?

Thanks,
Ryan
Reply
Old Jun 24, 2009 | 10:40 AM
  #2  
shbox's Avatar
TECH Veteran
15 Year Member
Liked
 
Joined: Dec 2008
Posts: 4,145
Likes: 61
From: Little Rock, AR
Default

It's a 5/16 square drive.
Reply
Old Jun 24, 2009 | 10:44 AM
  #3  
Formulized94's Avatar
Thread Starter
TECH Enthusiast
iTrader: (68)
 
Joined: Nov 2004
Posts: 707
Likes: 0
From: Cleveland, TN
Default

thank you sir.
Reply
Old Jun 24, 2009 | 11:45 AM
  #4  
Formulized94's Avatar
Thread Starter
TECH Enthusiast
iTrader: (68)
 
Joined: Nov 2004
Posts: 707
Likes: 0
From: Cleveland, TN
Default

That socket is proving difficult to find...
Reply
Old Jun 24, 2009 | 12:39 PM
  #5  
shbox's Avatar
TECH Veteran
15 Year Member
Liked
 
Joined: Dec 2008
Posts: 4,145
Likes: 61
From: Little Rock, AR
Default

You could try a quality piece of 5/16" square stock in a 5/16, 8 point socket.
Reply
Old Jun 24, 2009 | 02:38 PM
  #6  
Formulized94's Avatar
Thread Starter
TECH Enthusiast
iTrader: (68)
 
Joined: Nov 2004
Posts: 707
Likes: 0
From: Cleveland, TN
Default

Originally Posted by shbox
You could try a quality piece of 5/16" square stock in a 5/16, 8 point socket.
Just picked some square stock up...I think it is going to work good.
Reply
Old Jun 24, 2009 | 09:11 PM
  #7  
Formulized94's Avatar
Thread Starter
TECH Enthusiast
iTrader: (68)
 
Joined: Nov 2004
Posts: 707
Likes: 0
From: Cleveland, TN
Default

It worked out like a champ. Thanks
Reply
Old Jun 25, 2009 | 08:12 PM
  #8  
Razor_Blade's Avatar
TECH Resident
iTrader: (8)
 
Joined: Jul 2006
Posts: 826
Likes: 0
From: Florida
Default

Good post. I just had the same problem.
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 Jun 25, 2009 | 09:29 PM
  #9  
shbox's Avatar
TECH Veteran
15 Year Member
Liked
 
Joined: Dec 2008
Posts: 4,145
Likes: 61
From: Little Rock, AR
Default

Originally Posted by Formulized94
It worked out like a champ. Thanks
Reply
Old Aug 6, 2009 | 08:41 PM
  #10  
integraxtc's Avatar
TECH Resident
iTrader: (11)
 
Joined: Jun 2007
Posts: 790
Likes: 0
From: Chicago, northside
Default

so this plug is on the passenger side head, just the opposite of the ect sensor on the driver side head??

What thread and pitch is the adapter needed for this?
Reply
Old Aug 6, 2009 | 10:20 PM
  #11  
shbox's Avatar
TECH Veteran
15 Year Member
Liked
 
Joined: Dec 2008
Posts: 4,145
Likes: 61
From: Little Rock, AR
Default

Originally Posted by integraxtc
so this plug is on the passenger side head, just the opposite of the ect sensor on the driver side head??

What thread and pitch is the adapter needed for this?
It's near the rear, since the heads can be used on either side.

3/8-18 pipe thread.
Reply
Old Aug 7, 2009 | 01:07 AM
  #12  
integraxtc's Avatar
TECH Resident
iTrader: (11)
 
Joined: Jun 2007
Posts: 790
Likes: 0
From: Chicago, northside
Default

yeah, between #6 and #8. I felt down there, but I didn't feel any plug. I did feel a "hole" w/ possible threads, but it was nowhere near as big as the one on the driver side.

What gives? I definitely didn't feel a square plug.
Reply
Old Sep 15, 2009 | 04:24 PM
  #13  
integraxtc's Avatar
TECH Resident
iTrader: (11)
 
Joined: Jun 2007
Posts: 790
Likes: 0
From: Chicago, northside
Default

SHBOX can you tell me which Autometer adapter I need so I can hook up my sensor to the passenger cylinder head.

Autometer atm-2263

atm-2271

atm-2370
Reply




All times are GMT -5. The time now is 04:25 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