Headers No matter the Brand!
Former Vendor
Joined: Sep 2007
Posts: 5,511
Likes: 22
From: Southern MD
Team Owner
Joined: Aug 2003
Posts: 38,314
Likes: 35
http://forums.corvetteforum.com/show...ht=header+bolt
http://forums.corvetteforum.com/show....php?t=1660507
I would not go beyond 18 ft/lbs and even less than that with a greased bolt.
Last edited by '06 Quicksilver Z06; Nov 15, 2007 at 08:43 PM.
Tech Contributor
Joined: Mar 2003
Posts: 12,094
Likes: 197
From: Colorado Springs, CO
St. Jude Donor '08-'09-'10-'11
Shows how often I drive my car. Since the install of the new headers, I havent been in the car. Thats right, I drove it home and parked it. Sits there in a sleep state. Thanks for the reminder.
Le Mans Master
Joined: Jan 2003
Posts: 8,596
Likes: 19
From: Portland Oregon
I retorque after three over night cool downs. After that I check them a couple times a year and never had one work loose.
I looked at those other threads concerning broken bolts and torque wrenches. No one mentioned what brand or type of torq wrench they were using. Most of the 3/8" wrenches have a range starting at 10 ft/bs to 100 ft/lbs and they are inherently inaccurate at the lower end of the scale. Also I have found Sears Craftsman to be a POS, and then there are the Harbor Freight JUNK. All of my wrenches are Snap On, some are the beam and lever a couple spring click type but all my current wrenches has been replaced with their new electronic wrenches. These are by far the most accurate TQ wrenches I have ever used and they are repeatable from day to day.
I can't even tell you how many headers I have installed here in my shop, and using my trusty Snap On electronic TQ wrench I have never ever broken a GM exhaust manifold bolt.
The only TQ wrenches I recommend are those made by Precision Instrument who makes them for Snap On, Cornwell and others and their own name brand. Yes they cost a heck of a lot more than Sears or Harbor Freight, but for me there is no other wrench!
I looked at those other threads concerning broken bolts and torque wrenches. No one mentioned what brand or type of torq wrench they were using. Most of the 3/8" wrenches have a range starting at 10 ft/bs to 100 ft/lbs and they are inherently inaccurate at the lower end of the scale. Also I have found Sears Craftsman to be a POS, and then there are the Harbor Freight JUNK. All of my wrenches are Snap On, some are the beam and lever a couple spring click type but all my current wrenches has been replaced with their new electronic wrenches. These are by far the most accurate TQ wrenches I have ever used and they are repeatable from day to day.
I can't even tell you how many headers I have installed here in my shop, and using my trusty Snap On electronic TQ wrench I have never ever broken a GM exhaust manifold bolt.
The only TQ wrenches I recommend are those made by Precision Instrument who makes them for Snap On, Cornwell and others and their own name brand. Yes they cost a heck of a lot more than Sears or Harbor Freight, but for me there is no other wrench!
Team Owner
Joined: Feb 2000
Posts: 45,383
Likes: 892
From: Texas
CI 1-4-5-8-9-10 Vet
St. Jude Donor '03 thru '10, '17
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