C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

Head gasket replacement 89 vert

Thread Tools
 
Search this Thread
 
Old Mar 22, 2010 | 02:17 PM
  #1  
lbrehm02's Avatar
lbrehm02
Thread Starter
Intermediate
 
Joined: Jan 2010
Posts: 28
Likes: 0
From: Tulare Ca
Default Head gasket replacement 89 vert

New owner here and need to replace my head gasket. Wondering if anyone can share the pages of a FSM for tackling this task. I am mechanically inclined but never have done this before. Would appreciate the help and please let me know what I need to look for when I tear this down example: heads, rods and any special tools I may need, thanks. Oh and I did a compression check and test showed a range from 140-160 as it seems I have blow by because with the radiator cap off it blows coolant out and when I run the car it even blows out of the overflow tank. So I am guessing it is the head gasket. One more thing too is occasionally on start up I hear a loud knock but when I rev the engine it goes away (could this be a stuck valve? if so how do you fix), thanks for any help
Reply
Old Mar 22, 2010 | 02:33 PM
  #2  
JAKE's Avatar
JAKE
Le Mans Master
10 Year Member
 
Joined: Feb 2000
Posts: 9,715
Likes: 27
From: Kempner Texas
Default

What year? The FSM for my 96 isn't all that detailed on removing the heads to change the gaskets.

It'll say things like 'remove the valve covers', but doesn't say what size tool is needed to do that, see what I mean? It says "what" to do, but not necessarily "how".

Much of it is common sense though and for any time you get stuck, we can walk you through what needs to be done.

BTW, are you SURE you have a blown head gasket? I'd hate to see you tear apart the engine only to find the cause is a stuck thermostat.

Did you do a coolant system pressure test? If you didn't, AutoZone loans the tool.

I believe the knocking is a separate issue though.

Jake
Reply
Old Mar 22, 2010 | 03:32 PM
  #3  
Paul Ruggeri's Avatar
0Paul Ruggeri
Former Vendor
 
Joined: Nov 2006
Posts: 2,482
Likes: 3
From: Carmichael ca
Default

You can buy a block tester kit at most parts stores. That will tell you for sure if you have a bad headgasket. The job is fairly straight forward. You will need some torx sockets to disassemble the intake manifold. If you've ever done a SBC, you won't have any problems.
Reply

Get notified of new replies

To Head gasket replacement 89 vert





All times are GMT -4. The time now is 01:03 AM.

story-0
Top 10 DOs and DON'Ts for Protecting Your Convertible Top!

Slideshow: How to Protect A Convertible Top: 10 DOs & DON'Ts

By Michael S. Palmer | 2026-04-03 00:00:00


VIEW MORE
story-1
Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!

Slideshow: The 10 most explosive Corvettes ever built based on power-to-weight ratio.

By Joe Kucinski | 2026-05-20 07:23:03


VIEW MORE
story-2
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter

Slideshow: From C1 to C8 we compare every Corvette generation by the numbers.

By Joe Kucinski | 2026-05-12 16:54:12


VIEW MORE
story-3
8 Coolest Corvette Pace Cars (and Replicas) of All Time

Slideshow: Some Corvette pace cars became collectible legends, while others perfectly captured the look and attitude of their era.

By Verdad Gallardo | 2026-05-11 09:50:51


VIEW MORE
story-4
Top 10 Corvette Engines RANKED by Peak Torque (70+ Years of Muscle!)

Slideshow: Ranking the top 10 Corvette engines by torque output.

By Joe Kucinski | 2026-05-05 11:58:09


VIEW MORE
story-5
Corvette ZR1X Will Be Pacing the Indy 500, And Could Probably Race, Too!

Slideshow: A Corvette pace car nearly matching IndyCar speeds sounds exaggerated, until you look at the numbers.

By Verdad Gallardo | 2026-05-04 20:03:36


VIEW MORE
story-6
Top 10 Corvettes Coming to Mecum Indy 2026!

Among a rather large group of them.

By Brett Foote | 2026-05-04 13:56:44


VIEW MORE
story-7
Top 10 C9 Corvette MUST-HAVES to Fix These C8 Generation Flaws!

Slideshow: the top 10 things Corvette owners want in the C9 Corvette

By Michael S. Palmer | 2026-04-30 12:41:15


VIEW MORE
story-8
10 Revolutionary 'Corvette Firsts' Most People Don't Know

Slideshow: 10 Important Corvette 'firsts' that every fan should know.

By Joe Kucinski | 2026-04-29 17:02:16


VIEW MORE
story-9
5 Reasons to Upgrade to an LS6-Powered Corvette; 5 Reasons to Stay LT2

Slideshow: Should you buy a 2020-2026 Corvette or wait for 2027?

By Michael S. Palmer | 2026-04-22 10:08:58


VIEW MORE