C3 Tech/Performance V8 Technical Info, Internal Engine, External Engine, Basic Tech and Maintenance for the C3 Corvette
Sponsored by:
Sponsored by:

Cylinder Head Identification

Thread Tools
 
Search this Thread
 
Old Nov 6, 2003 | 12:51 PM
  #1  
Spook's Avatar
Spook
Thread Starter
Racer
 
Joined: Apr 2003
Posts: 486
Likes: 0
From: Point Pleasant NJ
Default Cylinder Head Identification

Can anyone hook a brother up and tell me what heads I have laying on my garage floor. I tried to find it but nadda.

The Only Markings I see on them are as follows

GM 3978493 C28 72
GM 34
Conv 4
Reply
Old Nov 6, 2003 | 02:23 PM
  #2  
stpman's Avatar
stpman
Melting Slicks
20 Year Member
 
Joined: Oct 2002
Posts: 2,865
Likes: 1
From: I may be getting old but I refuse to grow up
Default Re: Cylinder Head Identification (Spook)

Are you sure about the #? could it be
3973493

3973493 - 71-72 400 76cc

C 28 72 is the date code (month, day, year)

Steve

:steering:
Reply
Old Nov 6, 2003 | 03:22 PM
  #3  
Smokehouse69's Avatar
Smokehouse69
Le Mans Master
10 Year Member
 
Joined: Aug 2000
Posts: 9,662
Likes: 7
From: Semper ubi, sub ubi
Cruise-In VI Veteran
Cruise-In VII Veteran
Default Re: Cylinder Head Identification (Spook)

Check your 8 in the number 3978493 I beleive it is a 3
3973493....71-72...400..........76cc chamber

Fairly weak castings I believe.

From http://www.mortec.com
Reply
Old Nov 6, 2003 | 03:42 PM
  #4  
Spook's Avatar
Spook
Thread Starter
Racer
 
Joined: Apr 2003
Posts: 486
Likes: 0
From: Point Pleasant NJ
Default Re: Cylinder Head Identification (Smokehouse69)

I'd say you guys probably hit the nail right on the head. Maybe its time for me to get my eyes checked.

These probably arnt worth keeping, storing, or reusing right?
Reply

Get notified of new replies

To Cylinder Head Identification





All times are GMT -4. The time now is 07:59 PM.

story-0
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-1
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-2
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-3
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-4
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-5
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-6
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-7
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
story-8
2027 Corvette vs The World: Every C8 vs Its Closest Competitor

Slideshow: 2027 Corvette lineup vs the world.

By Joe Kucinski | 2026-04-24 16:12:42


VIEW MORE
story-9
10 Most Common Corvette Problems of the Last 20 Years!

Slideshow: 10 major Corvette problems from the last 20 years.

By Joe Kucinski | 2026-04-14 16:37:05


VIEW MORE