Header Bolts or Studs?
Instructor
Joined: Jun 2022
Posts: 176
Likes: 44
I regret not putting studs, but also with the Hedman headers, it took me the better part of a day to modify and fit the ARP header bolts, especially on cyl #5, it curves too tightly right at the bolt.
I made some wrenches for tightening them, but in your case with the body off you can practically have a dance party in there.
I made some wrenches for tightening them, but in your case with the body off you can practically have a dance party in there.
Drifting
Joined: Oct 2005
Posts: 1,527
Likes: 148
From: East London/SW Essex UK
Perhaps Hotrod427 Jim can advise - seen to recall from conversations years ago that he used 'off the shelf' underfloor headers (can't recall which brand, perhaps Supercomp 2 1/8"?) but his cylinder heads had 'raised' exhaust ports - perhaps surprisingly he didn't seem to have have fitment issues?
Safety Car
Joined: Nov 2008
Posts: 3,717
Likes: 551
From: Seattle Washington
Before everyone gets carried away with header studs. We are only talking about 25 ft lbs or so of torque.
The same torque specs as what the Intake bolts get, going into that same aluminum head. (but w/o the stress of the exhaust weight)
A drawback of header studs is you have to have the clearance room past the stud to remove the header. Not always an option.
The same torque specs as what the Intake bolts get, going into that same aluminum head. (but w/o the stress of the exhaust weight)
A drawback of header studs is you have to have the clearance room past the stud to remove the header. Not always an option.
Drifting
Joined: Oct 2020
Posts: 1,566
Likes: 574
From: Wisconsin
The issue of dropping gaskets in or out with studs can be solved by clipping out the bolt holes to the lower edge of the gasket. You can then slip the gasket in or out from the top with the header just loose.
Some factory exhaust gaskets are like that, even with bolts, to make things easier to assemble.
Some factory exhaust gaskets are like that, even with bolts, to make things easier to assemble.
Racer
Joined: Mar 2021
Posts: 278
Likes: 43
From: Kansas
Someone mentioned the copper anti seize being discontinued. It is still available and I would use it on the studs
https://www.permatex.com/products/lu...ubricant-8-oz/
https://www.permatex.com/products/lu...ubricant-8-oz/
