Removing header flange??

Old Sep 7, 2016 | 07:07 PM
  #1  
cdrod's Avatar
Thread Starter
Rodney
 
Joined: Jun 2011
Posts: 2,592
From: Houston, TX
Removing header flange??

I've never run headers before, and I'm concerned about ground clearance on my '72 Cutlass daily driver project since I plan to lower it about 1-1/2". Could I cut off the 3-bolt flange that comes on the headers and use a band clamp to connect to the head pipes? This would streamline the exhaust plumbing and get rid of the pesky header flange that has a bad reputation for leaks. Is this a good idea? Bad idea? Looking forward to some good advice!

Rodney
Old Sep 7, 2016 | 08:04 PM
  #2  
cherokeepeople's Avatar
Registered User
 
Joined: Feb 2013
Posts: 1,521
i would like to see somebody make headers with the ball type end like the newer car pipes kinda like the shorty headers for like the chevy"sorry the c word" ls engines.
Old Sep 8, 2016 | 04:46 AM
  #3  
RetroRanger's Avatar
72 Olds CS
 
Joined: Jun 2011
Posts: 6,657
I saw a video on eastwoods site where they use a flex joint after they cut off the flange, might be something to look into.
Old Sep 8, 2016 | 07:10 AM
  #4  
marcar1993's Avatar
Registered User
 
Joined: Apr 2007
Posts: 279
From: CNJ
I cut my flanges and made it a slip joint like most exhaust. Its nice, BUT! in order to remove the connection, the whole exhaust needs to be dropped. I plan to either get a butt connector clamp, so I can just butt the 2 ends together, or I'll weld on some ball and socket flanges, but not until the next time I have to take it apart!
Old Sep 8, 2016 | 09:02 AM
  #5  
joe_padavano's Avatar
Old(s) Fart
 
Joined: Mar 2007
Posts: 50,841
From: Northern VA
Originally Posted by RetroRanger
I saw a video on eastwoods site where they use a flex joint after they cut off the flange, might be something to look into.
^^^This. There needs to be some allowance for movement (which is why standard collector gaskets eventually fail). The flex tube and a butt-joint band clamp are a great way to go.

Walker 51107 is a 3" flex connector that should fit most 3" header collectors.
Old Sep 8, 2016 | 02:50 PM
  #6  
oldcutlass's Avatar
Administrator
 
Joined: Oct 2009
Posts: 42,521
From: Poteau, Ok
Hedman does a ball and socket style collector.
Old Sep 9, 2016 | 06:25 AM
  #7  
Olds64's Avatar
Moderator
 
Joined: Jul 2007
Posts: 18,264
From: Edmond, OK
I was puzzled until I saw your post Eric. I run Heddman headers on my 71 98 and they have the ball and socket joint. They are excellent quality and fit perfectly (no denting with a ball peen needed). Of course my 98 is different than a Cutlass but Heddman makes a quality header.
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
Cman7713
Small Blocks
4
Jul 10, 2014 11:32 AM
Bernhard
Big Blocks
0
Dec 18, 2012 01:30 PM
64Super88
Eighty-Eight
3
Dec 7, 2009 03:24 PM
Greybeard
Parts Wanted
4
Jul 24, 2008 07:23 AM
Sangersam
Big Blocks
5
May 14, 2008 08:28 PM


Thread Tools
Search this Thread

All times are GMT -7. The time now is 05:11 AM.