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

Header bolts and gasket???

Thread Tools
 
Search this Thread
 
Old Nov 15, 2011 | 08:51 PM
  #1  
crzydrumer14's Avatar
crzydrumer14
Thread Starter
Racer
 
Joined: Oct 2007
Posts: 321
Likes: 0
Default Header bolts and gasket???

Just got some new longtube headers. Looking for some header bolts a single piece gasket. What are you guys running? What is the correct size for the bolts? And what am I going to have to do about the AC brackets that go to a couple of the bolts? Spacer?

Thanks. Guys.
Reply
Old Nov 16, 2011 | 06:42 AM
  #2  
c4speed's Avatar
c4speed
Pro
 
Joined: Jul 2011
Posts: 544
Likes: 0
From: Atco Raceway in between Pa & Nj 13.073 @ 106 MPH
Default

Stage 8 bolts 3/4" , The headers from what I see always come with a gasket, one piece is not really needed.
Reply
Old Nov 16, 2011 | 07:41 AM
  #3  
1963SS's Avatar
1963SS
Drifting
10 Year Member
 
Joined: Dec 2007
Posts: 1,647
Likes: 4
From: Argillite KY
Default

The length will depend on your header flange. If it's around 3/8" you probably need 1" header bolts. I always use the Earl's Pressure Master gaskets and Percy's split lock header bolts. That's the only way for sure that they won't need re-torqued.
Reply
Old Nov 16, 2011 | 10:04 AM
  #4  
engle1147's Avatar
engle1147
Le Mans Master
Supporting Lifetime
 
Joined: Jul 2007
Posts: 5,043
Likes: 8
From: Tampa Florida
Default

Originally Posted by 1963SS
The length will depend on your header flange. If it's around 3/8" you probably need 1" header bolts. I always use the Earl's Pressure Master gaskets and Percy's split lock header bolts. That's the only way for sure that they won't need re-torqued.
the thickness of the header flange and the gasket you choose may also affect your bolt length selection. I run some soft aluminum gaskets that are pretty thick. I also run stainless steel Percy split lock bolts but they are a bit longer than an inch. I also reused a few of the stock bolts with the use of spacers to remount the accessory brackets.
All this stuff's been done before I recommend doing a "search" here on the CF and look info about header installation and fabricating the associated brackets/spacers.

Reply
Old Nov 16, 2011 | 10:27 AM
  #5  
pipe's Avatar
pipe
Drifting
20 Year Member
 
Joined: Jan 2003
Posts: 1,894
Likes: 3
From: Reading PA.
Default

I run Fel Pro's with a bead of red silicone on both sides of the port and Totally Stainless locking header bolts. Pipe
Reply
Old Nov 16, 2011 | 10:58 AM
  #6  
c4speed's Avatar
c4speed
Pro
 
Joined: Jul 2011
Posts: 544
Likes: 0
From: Atco Raceway in between Pa & Nj 13.073 @ 106 MPH
Default

Originally Posted by 1963SS
The length will depend on your header flange. If it's around 3/8" you probably need 1" header bolts. I always use the Earl's Pressure Master gaskets and Percy's split lock header bolts. That's the only way for sure that they won't need re-torqued.
Used 3/4 bolts on my OBX 3/8 flange, why pay extra for 1'' unless your gaskets are a 1/4" thicker ? Maybe if you have some threads stripped in the head 1" would be better.
Reply

Get notified of new replies

To Header bolts and gasket???





All times are GMT -4. The time now is 12:35 PM.

story-0
5 Best & 5 Most Overrated Corvette Track Packages of All Time!

Slideshow: The 5 best and 5 most overrated Corvette track packages ever.

By Joe Kucinski | 2026-06-09 12:46:45


VIEW MORE
story-1
Every 2027 Corvette Engine Explained

Slideshow: Every 2027 Corvette engine explained

By Joe Kucinski | 2026-06-09 12:16:31


VIEW MORE
story-2
Designer Imagines A Corvette That Looks More Like a Corvette Than the Corvette

Slideshow: A Jaguar designer's personal project imagines what a modern front-engined Corvette might look like if Chevrolet revisited the golden age of the Stingray.

By Verdad Gallardo | 2026-06-08 19:53:43


VIEW MORE
story-3
10 Ugly Corvettes That We Still Kinda Love

Slideshow: 10 ugly Corvettes that we still kinda love.

By Joe Kucinski | 2026-06-03 10:34:17


VIEW MORE
story-4
Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer

A lot of money has changed hands at the online auction house over the years.

By Brett Foote | 2026-06-03 10:21:50


VIEW MORE
story-5
10 Things Every Corvette Owner Needs (2026 Edition)

Slideshow: 10 great gifts Corvette enthusiasts actually want for Father's Day!

By Michael S. Palmer | 2026-06-03 15:43:40


VIEW MORE
story-6
8 Most "Only Corvette Owners Understand" Quirks and Problems

Slideshow: These are the quirks, annoyances, and oddly lovable problems that every Corvette owner eventually learns to live with.

By Pouria Savadkouei | 2026-05-28 09:31:39


VIEW MORE
story-7
10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years

Slideshow: 10 reasons why the C6 Z06 is still a performance benchmark after 20 years.

By Joe Kucinski | 2026-05-27 17:20:09


VIEW MORE
story-8
How Much Horsepower Every Corvette Engine "LOST" in 1972

Slideshow: How much horsepower every Corvette engine lost in 1972.

By Joe Kucinski | 2026-05-27 16:54:53


VIEW MORE
story-9
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