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

Stock heads: Which header gaskets to use?

Thread Tools
 
Search this Thread
 
Old Apr 7, 2005 | 12:14 PM
  #1  
74FLCONV's Avatar
74FLCONV
Thread Starter
Melting Slicks
 
Joined: Oct 2002
Posts: 3,255
Likes: 0
From: Manalapan FL
Default Stock heads: Which header gaskets to use?

Stock '74 350...factory shorty headers.

Square port, oval port, round port, d-port?

1.36", 1.5", 1.75"?

3/4" bolts, 1" bolts?



D. Ocean
Miami, FLA

Last edited by 74FLCONV; Apr 7, 2005 at 12:37 PM.
Reply
Old Apr 7, 2005 | 12:46 PM
  #2  
comp's Avatar
comp
Team Owner
10 Year Member
 
Joined: Sep 2003
Posts: 88,393
Likes: 2
From: eville in
Default

factory shorty headers ?????
Reply
Old Apr 7, 2005 | 09:09 PM
  #3  
74FLCONV's Avatar
74FLCONV
Thread Starter
Melting Slicks
 
Joined: Oct 2002
Posts: 3,255
Likes: 0
From: Manalapan FL
Default

Yes. I believe they were available in '81? I'm fitting them on my '74.

D. Ocean
Miami, FLA
Reply
Old Apr 8, 2005 | 08:24 AM
  #4  
comp's Avatar
comp
Team Owner
10 Year Member
 
Joined: Sep 2003
Posts: 88,393
Likes: 2
From: eville in
Default

i'd only seen iron manifold's
Reply
Old Apr 8, 2005 | 09:40 AM
  #5  
74FLCONV's Avatar
74FLCONV
Thread Starter
Melting Slicks
 
Joined: Oct 2002
Posts: 3,255
Likes: 0
From: Manalapan FL
Default

OK...allow me to re-phrase the question:

Stock '74 350...shorty headers.

Square port, oval port, round port, d-port?

1.36", 1.5", 1.75"?

3/4" bolts, 1" bolts?


D. Ocean
Miami, FLA
Reply
Old Apr 8, 2005 | 10:26 AM
  #6  
Z-man's Avatar
Z-man
Race Director
25 Year Member
Conversation Starter
All Eyes On Me
 
Joined: Nov 1999
Posts: 10,643
Likes: 8
From: Foxfield CO 1970 Convertible
Default

There were no gaskets from the factory...do you need them now?
Reply
Old Apr 8, 2005 | 10:53 AM
  #7  
Contrail's Avatar
Contrail
Racer
 
Joined: Jun 2004
Posts: 322
Likes: 0
From: The Dirty, Dirty South
Default

Square port will only seal on square port heads, round port will seal on just about anything.
Reply
Old Apr 8, 2005 | 11:21 AM
  #8  
1970-Bronze's Avatar
1970-Bronze
Burning Brakes
15 Year Member
 
Joined: Nov 2003
Posts: 990
Likes: 0
From: North Texas
Default

I only use copper gaskets.
Reply
Corvette Stories

The Best of Corvette for Corvette Enthusiasts

story-0

Top 10 Corvette Engines RANKED by Peak Torque (70+ Years of Muscle!)

 Joe Kucinski
story-1

Corvette ZR1X Will Be Pacing the Indy 500, And Could Probably Race, Too!

 Verdad Gallardo
story-2

Top 10 Corvettes Coming to Mecum Indy 2026!

 Brett Foote
story-3

Top 10 C9 Corvette MUST-HAVES to Fix These C8 Generation Flaws!

 Michael S. Palmer
story-4

10 Revolutionary 'Corvette Firsts' Most People Don't Know

 Joe Kucinski
story-5

5 Reasons to Upgrade to an LS6-Powered Corvette; 5 Reasons to Stay LT2

 Michael S. Palmer
story-6

2027 Corvette vs The World: Every C8 vs Its Closest Competitor

 Joe Kucinski
story-7

10 Most Common Corvette Problems of the Last 20 Years!

 Joe Kucinski
story-8

5 MOST and 5 LEAST Popular Corvette Model Years in History!

 Joe Kucinski
story-9

2027 Corvette Buyer's Guide: Everything You Need to Know!

 Joe Kucinski
Old Apr 8, 2005 | 10:52 PM
  #9  
74FLCONV's Avatar
74FLCONV
Thread Starter
Melting Slicks
 
Joined: Oct 2002
Posts: 3,255
Likes: 0
From: Manalapan FL
Default

Originally Posted by Z-man
There were no gaskets from the factory...do you need them now?
Aren't gaskets required when installing headers?

D. Ocean
Miami, FLA
Reply

Get notified of new replies

To Stock heads: Which header gaskets to use?





All times are GMT -4. The time now is 12:58 PM.

story-0
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-1
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-2
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-3
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-4
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-5
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-6
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-7
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
story-8
5 MOST and 5 LEAST Popular Corvette Model Years in History!

Slideshow: 5 most and least popular Corvette model years.

By Joe Kucinski | 2026-04-08 13:25:01


VIEW MORE
story-9
2027 Corvette Buyer's Guide: Everything You Need to Know!

Slideshow: 2027 Corvette buyer's guide

By Joe Kucinski | 2026-04-17 16:41:08


VIEW MORE