Generation III External Engine LS1 | LS6 | Bolt-Ons | Intakes | Exhaust | Ignition | Accessories
Sponsored by:
Sponsored by:

Help

Thread Tools
 
Search this Thread
 
Old Apr 3, 2005 | 03:38 PM
  #1  
RedWS601's Avatar
Thread Starter
TECH Apprentice
iTrader: (1)
 
Joined: Nov 2004
Posts: 354
Likes: 0
From: Boston
Default Help

OK I want to change my coolant. I know where the radiator plug is but i know there is more coolant somwhere. can someone tell me where it is? A pic would greatly help.
Reply
Old Apr 3, 2005 | 11:53 PM
  #2  
NightHawk's Avatar
TECH Fanatic
iTrader: (1)
 
Joined: Jan 2003
Posts: 1,476
Likes: 0
From: Sarasota, FL
Default

Aside from the radiator, coolant tends to hang out in the engine block, the heater core, and of course the radiator overflow resevoir. AFAIK, as long as you undo the petcock at the bottom of the radiator (I believe on the passenger side) and flush it from the radiator cap at the top, you should get pretty much everything.
Reply
Old Apr 4, 2005 | 02:11 AM
  #3  
02transhawk's Avatar
TECH Apprentice
 
Joined: Jun 2004
Posts: 399
Likes: 0
From: Dallas, TX
Default

When I change mine, I empty, fill with water, start, empty again, then refill with new product.
Reply
Old Apr 4, 2005 | 03:06 AM
  #4  
2kta--89formula's Avatar
12 Second Club
iTrader: (2)
 
Joined: Sep 2004
Posts: 366
Likes: 0
From: Deland, Florida
Default

I just flushed mine the other day....tapped into a heater hose that comes off the water pump and used a T to hook up a garden hose. Flushed it out....then filled with 50/50 mix. Some water stays in the block and heater core, you can get that out by removing the drain plugs in the block <which looked like a PITA!> I did the math based on a 12 qt. cooling system and I ended up with a 60/40 water/coolant mix by filling the radiator with 50/50.
Reply
Old Apr 4, 2005 | 05:39 PM
  #5  
RedWS601's Avatar
Thread Starter
TECH Apprentice
iTrader: (1)
 
Joined: Nov 2004
Posts: 354
Likes: 0
From: Boston
Default

Originally Posted by 2kta--89formula
I just flushed mine the other day....tapped into a heater hose that comes off the water pump and used a T to hook up a garden hose. Flushed it out....then filled with 50/50 mix. Some water stays in the block and heater core, you can get that out by removing the drain plugs in the block <which looked like a PITA!> I did the math based on a 12 qt. cooling system and I ended up with a 60/40 water/coolant mix by filling the radiator with 50/50.

where those drain plugs that you said are on the block?
Reply
Old Apr 4, 2005 | 10:26 PM
  #6  
2kta--89formula's Avatar
12 Second Club
iTrader: (2)
 
Joined: Sep 2004
Posts: 366
Likes: 0
From: Deland, Florida
Default

I saw two, one is above the starter, the other is in front of the drivers side motor mount.
Reply
Old Apr 4, 2005 | 11:01 PM
  #7  
technical's Avatar
TECH Addict
20 Year Member
 
Joined: Mar 2004
Posts: 2,336
Likes: 0
From: Fat Chance Hotel
Default

If you pull the block plugs, make sure to clean the plugs up good and put some pipe sealant or equivalent on the threads when you re-install.
Reply
Old Apr 5, 2005 | 09:00 AM
  #8  
RedWS601's Avatar
Thread Starter
TECH Apprentice
iTrader: (1)
 
Joined: Nov 2004
Posts: 354
Likes: 0
From: Boston
Default

Originally Posted by technical
If you pull the block plugs, make sure to clean the plugs up good and put some pipe sealant or equivalent on the threads when you re-install.

Anyone have pictures, it would help greatly. I don't want to just pull any bolt and do something wrong
Reply
LS1 Tech Stories

The Best V8 Stories One Small Block at Time

story-0

10 Reasons Daily Driving a Swap Project SUCKS! (& 1 Reason to Do It Anyway)

 Michael S. Palmer
story-1

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

 Brett Foote
story-2

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

 Pouria Savadkouei
story-3

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

 Verdad Gallardo
story-4

7 Most Reliable High-Performance Engines GM Has Ever Built

 Verdad Gallardo
story-5

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

 Verdad Gallardo
story-6

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

 Pouria Savadkouei
story-7

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

 Verdad Gallardo
story-8

Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked

 Pouria Savadkouei
story-9

Top 10 Most Powerful Chevy Trucks Ever Made!

 
Old May 17, 2005 | 06:53 PM
  #9  
SSmokd U's Avatar
TECH Enthusiast
 
Joined: Aug 2003
Posts: 546
Likes: 3
From: Northeast TN
Default

What I did was drained the radiator, then removed the bottom radiator hose, take a garden hose and start shooting water in there (after getting the car back up to normal operating temp!)and keep the radiator draining. By doing this, you are shooting water thru the motor to flush it out (also turn on your heat), and it is draining out. You are flushing the syst and then its ready for the 'ole 50/50 mix!
Reply




All times are GMT -5. The time now is 01:14 PM.

story-0
10 Reasons Daily Driving a Swap Project SUCKS! (& 1 Reason to Do It Anyway)

Slideshow: 10 reasons daily-driving a swap project might not be for you. Or is it?

By Michael S. Palmer | 2026-06-17 09:39:05


VIEW MORE
story-1
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-2
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 | 2026-06-18 10:26:23


VIEW MORE
story-3
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-4
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-5
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-6
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-7
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-8
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-9
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