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

HeadGasket

Thread Tools
 
Search this Thread
 
Old Jun 22, 2008 | 06:39 PM
  #1  
Choppers's Avatar
Thread Starter
TECH Resident
iTrader: (60)
 
Joined: Dec 2006
Posts: 849
Likes: 0
From: Jacksonville, Florida
Default HeadGasket

This z28 i am looking at buying blew a headgasket. The guy said the motor will turn over but won't run anymore. I figured when they blow headgaskets they usually will lock up right? Let me know if you guys might know why it won't run. Thanks
Reply
Old Jun 22, 2008 | 06:40 PM
  #2  
Formula350's Avatar
TECH Senior Member
iTrader: (3)
 
Joined: Oct 2006
Posts: 7,564
Likes: 4
From: Decatur, TN (N-W of Athens)
Default

Originally Posted by Choppers
This z28 i am looking at buying blew a headgasket. The guy said the motor will turn over but won't run anymore. I figured when they blow headgaskets they usually will lock up right? Let me know if you guys might know why it won't run. Thanks
No, when they seize they will lock up. Or throw a rod and it gets lodged so the motor can't turn over.
Reply
Old Jun 22, 2008 | 06:53 PM
  #3  
Choppers's Avatar
Thread Starter
TECH Resident
iTrader: (60)
 
Joined: Dec 2006
Posts: 849
Likes: 0
From: Jacksonville, Florida
Default

well he said the motor is turning over but he knows for sure the headgaskets are gone
Reply
Old Jun 22, 2008 | 07:34 PM
  #4  
96capricemgr's Avatar
11 Second Club
iTrader: (1)
 
Joined: Sep 2004
Posts: 11,975
Likes: 15
Default

A cylinder can hydrolock when a head gasket blows, attempting to start a motor with a cylinder full of colant like it sounds has been done can do major extra damage, fun things like bent rods.
Reply
Old Jun 22, 2008 | 07:50 PM
  #5  
GIZMO's Avatar
TECH Addict
iTrader: (8)
 
Joined: Jan 2004
Posts: 2,780
Likes: 3
From: Shelby, NC
Default

Originally Posted by 96capricemgr
fun things like bent rods.

PM rods don't bend too good!!

Last edited by GIZMO; Jun 22, 2008 at 07:58 PM.
Reply
Old Jun 22, 2008 | 07:56 PM
  #6  
dre2013's Avatar
TECH Resident
iTrader: (7)
 
Joined: Jun 2005
Posts: 773
Likes: 0
From: Akron OH
Default

just b/c it has a blow hg doesnt mean it wouldnt start...i have a friend that still drives his intrepid with a blown headgasket...just adds water like every2 hrs lol
Reply
Old Jun 22, 2008 | 08:12 PM
  #7  
96capricemgr's Avatar
11 Second Club
iTrader: (1)
 
Joined: Sep 2004
Posts: 11,975
Likes: 15
Default

This was from a spun bearing, not coolant in the cylinder but same thing can happen when the compression stroke tries to compress water. Water does not compress.


Reply
Old Jun 22, 2008 | 08:54 PM
  #8  
BizZzatch350's Avatar
Moderator
20 Year Member
Photogenic
iTrader: (33)
 
Joined: Dec 2001
Posts: 9,793
Likes: 15
From: T E X A S
Default

I would be careful, head gaskets generally speaking don't just go out. For the most part you can read a blown head gasket and see what happened. What you think may be a blown head gasket could be a car that needs a complete rebuild. Figure out why it went, a lot of people do it by over heating.
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 22, 2008 | 09:11 PM
  #9  
96capricemgr's Avatar
11 Second Club
iTrader: (1)
 
Joined: Sep 2004
Posts: 11,975
Likes: 15
Default

Overheating can easily ruin head castings too.
Reply
Old Jun 22, 2008 | 09:13 PM
  #10  
Choppers's Avatar
Thread Starter
TECH Resident
iTrader: (60)
 
Joined: Dec 2006
Posts: 849
Likes: 0
From: Jacksonville, Florida
Default

yea i don't think i am going to mess with it because the guy said it has been wrecked. I haven't seen pics but the price is 650 for a 95 and mileage he hasn't said but says it has like new rims and tires.
Reply
Old Jun 23, 2008 | 01:59 AM
  #11  
Formula350's Avatar
TECH Senior Member
iTrader: (3)
 
Joined: Oct 2006
Posts: 7,564
Likes: 4
From: Decatur, TN (N-W of Athens)
Default

Originally Posted by 96capricemgr
A cylinder can hydrolock when a head gasket blows, attempting to start a motor with a cylinder full of colant like it sounds has been done can do major extra damage, fun things like bent rods.
Forgot about hydrolock. Always a good procedure to pull all plugs and turn it over then.
Reply




All times are GMT -5. The time now is 10:22 AM.

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