Question: Hacking stock 98-02 manifold
#1
Question: Hacking stock 98-02 manifold
I have two questions below - but a little inside info before you answer...
I am swapping '01 LS1/T56 into my '68 Chevy stepside C-10 truck. I had been told by some people the stock WS6 headers wouldn't fit, but I found the manifold and cat slip right in, no problem! More info on that:
https://ls1tech.com/forums/showpost....5&postcount=71
Anyway, long story short here is my problem. See the little flange that sticks out of the heat shield on the passenger side manifold?
http://satellitehead.com/uploads/ls1headers001.jpg
Well, I need to grind it down to clear the engine mount and frame, but I have tow questions:
1) What the heck is it for? Looks like it was designed to be tapped for something?
2) IS it safe to grind, and if yes, how much can be safely ground down? I'm assuming it's hollow on the other side.
Thanks!
I am swapping '01 LS1/T56 into my '68 Chevy stepside C-10 truck. I had been told by some people the stock WS6 headers wouldn't fit, but I found the manifold and cat slip right in, no problem! More info on that:
https://ls1tech.com/forums/showpost....5&postcount=71
Anyway, long story short here is my problem. See the little flange that sticks out of the heat shield on the passenger side manifold?
http://satellitehead.com/uploads/ls1headers001.jpg
Well, I need to grind it down to clear the engine mount and frame, but I have tow questions:
1) What the heck is it for? Looks like it was designed to be tapped for something?
2) IS it safe to grind, and if yes, how much can be safely ground down? I'm assuming it's hollow on the other side.
Thanks!
#3
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I have some 98 manifolds that I just pulled off (camaro). They don't have that tab. I've heard that they're a bit more restrictive, but I don't know for sure. I'll post a pic if ya like? I'd sell them for cheap!!! if you want 'em!
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Not sure about that. I haven't noticed those on my '01, but I haven't looked real closely either. About being told they wouldn't fit, I was told the same thing about using the manifolds in my '69, so I dished out $500 for S&P headers, then I find out later that the factory manifolds would have fit
#6
Anyone know how far down I can safely grind that thing? I am amazed how cleanly and nicely these fit into my truck. Plan on posting a huge "HowTo" thread once this is all done. Any advice anyone gives RE: header modifications is going into it for the entire community to benefit from.
Glad to hear I'm not the only one that had this problem
Glad to hear I'm not the only one that had this problem
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#9
Ok, the '01-'02 is a no-go on the passenger side. In addition to that little jut-out being in the way, I notice the flange is rubbing the frame as well when bolted all the way down. I'm just gonna contact ashape about his I guess. Hopefully I'm not aimlessly dropping cash on something that doesn't work.
Not sure what the heat shield on the outside of this guy is good for :\
Anyways, some pics for reference - will be removed eventually, so if this is of interest you, right click and "save as"
Before grinding:
http://satellitehead.com/uploads/ls1headers2001.jpg
After grinding:
http://satellitehead.com/uploads/ls1headers2002.jpg
http://satellitehead.com/uploads/ls1headers2003.jpg
http://satellitehead.com/uploads/ls1headers2004.jpg
Fitment post-grind (note the heat shield touches):
http://satellitehead.com/uploads/ls1headers2005.jpg
Flange touches framerail when bolted in:
http://satellitehead.com/uploads/ls1headers2006.jpg
Full overhead view w/dipstick inserted - Tight fit when using the truck oil dipstick (I converted to a truck pan/pickup/tube for xmember clearance):
http://satellitehead.com/uploads/ls1headers2007.jpg
http://satellitehead.com/uploads/ls1headers2008.jpg
I hope this might help someone in the future?
Not sure what the heat shield on the outside of this guy is good for :\
Anyways, some pics for reference - will be removed eventually, so if this is of interest you, right click and "save as"
Before grinding:
http://satellitehead.com/uploads/ls1headers2001.jpg
After grinding:
http://satellitehead.com/uploads/ls1headers2002.jpg
http://satellitehead.com/uploads/ls1headers2003.jpg
http://satellitehead.com/uploads/ls1headers2004.jpg
Fitment post-grind (note the heat shield touches):
http://satellitehead.com/uploads/ls1headers2005.jpg
Flange touches framerail when bolted in:
http://satellitehead.com/uploads/ls1headers2006.jpg
Full overhead view w/dipstick inserted - Tight fit when using the truck oil dipstick (I converted to a truck pan/pickup/tube for xmember clearance):
http://satellitehead.com/uploads/ls1headers2007.jpg
http://satellitehead.com/uploads/ls1headers2008.jpg
I hope this might help someone in the future?
#11
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Originally Posted by shifty`
Anyway, long story short here is my problem. See the little flange that sticks out of the heat shield on the passenger side manifold?
http://satellitehead.com/uploads/ls1headers001.jpg
Well, I need to grind it down to clear the engine mount and frame, but I have tow questions:
1) What the heck is it for? Looks like it was designed to be tapped for something?
2) IS it safe to grind, and if yes, how much can be safely ground down? I'm assuming it's hollow on the other side.
Thanks!
I have no idea how much of it you can cut off before poking a hole in the manifold.
Ken
Last edited by Kenova; 02-26-2006 at 10:54 PM.
#12
I just wanna say thanks again to everyone who's repsonded in this thread.
How bad do you think it would it be if I removed the heat shield on the manifolds? What kind of problems will it cause with surrounding components like plug wires, engine mounts, etc? I'm assuming GM put the heat shields on them for a reason. Was it something as stupid as just keeping people from touching the things, or more in depth than that?
Did you simply torch/plasma/cut it out and weld a cap over it? Just curious.
How bad do you think it would it be if I removed the heat shield on the manifolds? What kind of problems will it cause with surrounding components like plug wires, engine mounts, etc? I'm assuming GM put the heat shields on them for a reason. Was it something as stupid as just keeping people from touching the things, or more in depth than that?
Originally Posted by patrick_rodgers
On the 2000 Camaro, it is for part of the air injection system. Mine has been removed, and the hole filled up.
Last edited by shifty`; 02-27-2006 at 12:55 PM.
#13
Launching!
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Originally Posted by shifty`
How bad do you think it would it be if I removed the heat shield on the manifolds? What kind of problems will it cause with surrounding components like plug wires, engine mounts, etc? I'm assuming GM put the heat shields on them for a reason. Was it something as stupid as just keeping people from touching the things, or more in depth than that?
Ken
#14
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Looks to me like you have enough room. You could take a cutoff wheel and take some metal off of the lower flange without impacting the strength. I agree with Ken on removing the heat shields, then clean them up and ceramic coat them. Also what is that piece on the frame the you are touching with the upper manifold? Could that be notched to give you a little more clearance?
Pat
Pat
#15
Originally Posted by Stu Cool
Also what is that piece on the frame the you are touching with the upper manifold? Could that be notched to give you a little more clearance?
I looked at my friend's 2000 Camaro SS last night to see the hydraulic actuator location and the passenger side header. He has the same flange on his header, but it's being used, looks like by the AIR/EGR setup. Very interesting. So, for the record, it's used in the 2000 modem Camaro if nothing else.
I'd honestly prefer to plasma this section out, sand, refinish and JetHot coat them, but I mean ... at that cost, may as well buy new ones, right?
#17
Man I love that Chevelle.
Good news. The stock '98 manifolds fit like they were meant for my truck. Thanks ashade98 for the quick, cheap sale.
Pics and more info here:
https://ls1tech.com/forums/showpost....3&postcount=80
Thanks to all who contributed with this thread.
Good news. The stock '98 manifolds fit like they were meant for my truck. Thanks ashade98 for the quick, cheap sale.
Pics and more info here:
https://ls1tech.com/forums/showpost....3&postcount=80
Thanks to all who contributed with this thread.