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

header torque

Thread Tools
 
Search this Thread
 
Old Jan 13, 2006 | 04:24 PM
  #1  
71redskin's Avatar
71redskin
Thread Starter
Burning Brakes
20 Year Member
Conversation Starter
All Eyes On Me
 
Joined: Feb 2005
Posts: 977
Likes: 1
From: wash. dc
Default header torque

just installed headers with stage 8 bolts, what should i torgue these bolts to....thanks guys and gals
Reply
Old Jan 13, 2006 | 05:15 PM
  #2  
Entropy's Avatar
Entropy
Team Owner
20 Year Member
Conversation Starter
All Eyes On Me
Photogenic
 
Joined: Feb 2005
Posts: 32,519
Likes: 1
From: central America
St. Jude Donor '08-'09
Default

Gosh, I just did the old quarter past tight when I put my headers on. I can't tell if the leak, cause with open headers I can't hear a darn thing.
Hopefully someone will chime in, and I may be out in the shop retightening them.


trw
Reply
Old Jan 13, 2006 | 06:42 PM
  #3  
lowbuck72's Avatar
lowbuck72
Drifting
20 Year Member
Liked
Loved
Community Favorite
 
Joined: Jun 2005
Posts: 1,950
Likes: 498
From: Chino Hills CA
Default

Header bolts are so hard to install even with a wrench, impossible with a socket, how could you possibly get a torque wrench on them. Anyway, 3/8" bolts in cast iron is usually 30 to 40 ft-lb.
Reply
Old Jan 13, 2006 | 06:51 PM
  #4  
71redskin's Avatar
71redskin
Thread Starter
Burning Brakes
20 Year Member
Conversation Starter
All Eyes On Me
 
Joined: Feb 2005
Posts: 977
Likes: 1
From: wash. dc
Default

the only bolts i couldn't get a socket on were on #1 and #2 closest to the firewall....anyway, thanx lowbuck
Reply
Old Jan 13, 2006 | 07:40 PM
  #5  
MartyW's Avatar
MartyW
Burning Brakes
Supporting Lifetime
 
Joined: Nov 2005
Posts: 832
Likes: 1
From: Breckenridge Colorado
Default

Originally Posted by lowbuck72
Header bolts are so hard to install even with a wrench, impossible with a socket, how could you possibly get a torque wrench on them. Anyway, 3/8" bolts in cast iron is usually 30 to 40 ft-lb.

I used a torque wrench on mine and got them all at about 35. Easiest way I could detect leaks there were to start the car and I used a spray bottle and just sprayed a little water on the header gasket area as I would pull back on the throttle and I just looked for small bubbling (obviously I had to do this when the car was cold). I did have a slight leak on one and just torqued it down a bit harder and it stopped leaking.
Reply

Get notified of new replies

To header torque





All times are GMT -4. The time now is 01:40 PM.

story-0
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-1
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-2
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-3
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-4
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-5
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-6
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-7
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-8
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-9
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