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

Overheating after heads cam install

Thread Tools
 
Search this Thread
 
Old Jul 16, 2006 | 03:28 PM
  #1  
ßlackßeard's Avatar
Thread Starter
Teching In
 
Joined: Oct 2004
Posts: 10
Likes: 0
From: Canada
Default Overheating after heads cam install

Hey guys / gals

Car is back together, and I cant trace down an overheating issue. The guage shows the temp is good, but the coolant starts to boil and overflow out of the reservoir. The rad cap is lined up right, the thermostat does kick on (I think) I pretty sure I got the plumbing in correctly... any ideas???

thanks
Reply
Old Jul 16, 2006 | 03:36 PM
  #2  
blkbird's Avatar
TECH Fanatic
20 Year Member
Photogenic
Liked
Loved
iTrader: (28)
 
Joined: Mar 2005
Posts: 1,678
Likes: 14
From: san antonio, tx
Default

The bubbles coming out of the radiator is all the air getting out of your system. Be sure to run it with the heater full blast.
Reply
Old Jul 16, 2006 | 04:47 PM
  #3  
TheBlurLS1's Avatar
That's what she said...
iTrader: (8)
 
Joined: Mar 2004
Posts: 7,954
Likes: 2
From: Nederland Texas
Default

^^^ ^^^

Take the cap off and put in as much water as you can. If you squeeze the radiator hose on the driver side, you can squeeze some water into the block and the level in the radiator will go down. It sometimes takes forever to get these cars full of water. You didn't plug that line running from between your heads to the throttle body then to the radiator did you? It's ok to bypass the TB, just don't plug it.
Reply
Old Jul 16, 2006 | 10:18 PM
  #4  
SUX2BU's Avatar
11 Second Club
iTrader: (14)
 
Joined: Apr 2002
Posts: 3,267
Likes: 1
From: DFW, TX
Default

air bubbles in your cooling system. fill your motor fist. pour it in thru pipe on your waterpump (by the TB) untill your motor is full.
Reply
Old Jul 17, 2006 | 09:54 AM
  #5  
BLKWS6's Avatar
TECH Veteran
 
Joined: Feb 2002
Posts: 4,049
Likes: 2
From: Loganville, GA
Default

also make sure the 2 lines at the radiator (the overlow and crossover tube for the heads) are in the right spots. if they are backwards it will cause the same problem.
Reply




All times are GMT -5. The time now is 08:08 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