C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

Header install status...

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Old Nov 11, 2004 | 02:03 PM
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Default Header install status...

Well, here's where I'm at. I need to either 1) figure out how to get the top bolt of the cat bracket off on the driver's side (i think that's impossible without dropping the tranny/engine)... or 2) dremel off the damn thing as high as I can. I can't get the driver's side header on with that on there. Passenger side is all done (minus oil dip stick). Not going to worry about bolting it down .. my dip stick goes in so tight it will never come out.

Here are the pics:







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Old Nov 11, 2004 | 02:22 PM
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You may be able to unbolt the cat and jut leave the bracket in there. but I'm not sure if it will touch the header or not. As far as I know or can think of is to remove the c-beam and drive shaft then lower the rear end of the trans. Useing a LONG extension remove the bolt.
I will be having my trans rebuilt when I put my headers in so this wont be a problem for me.
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Old Nov 11, 2004 | 03:19 PM
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I've never heard of a cat bracket. Is that something on the newer LT-1s?
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Old Nov 11, 2004 | 03:38 PM
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Originally Posted by VictorRussell'92
I've never heard of a cat bracket. Is that something on the newer LT-1s?
That must be just germain to the LT-4? Nothing like that on my 92 when I did my headers.
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Old Nov 11, 2004 | 03:39 PM
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good pic's
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Old Nov 11, 2004 | 03:56 PM
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ok the cat bracket I know exactly what you are talking about!!!!!
on the drivers side i cut it with a saw zall! hard and scary!!!!
now the other side i managed to get a wrench up in there
thes 2 bolts you have to get off on top and on the side sticking out toward the drivers side. get the side one first and then cut the pipe with a saw zall below the precat. and if you get the other part of the header loose from it. meaning with the top bolt in it can rotate freely side to side. doing this you can move the cat to the side and reach the top bolt.
now the easiest thing to do on the drivers side is remove the inner fender panel next to the ac condensor. that way you can easily acess under the ac condensor. their are 4 bolts holding the ac in just remove them and swing the ac out of the way.
if you need anything else email me
your friend
Sean Blanton
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Old Nov 11, 2004 | 03:59 PM
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i recommend cutting right before te cat because then when you get your exhaust welded up the shop can put 3 in tubing all the way back!
def better fro hp!
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Old Nov 11, 2004 | 04:03 PM
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Sounds like another reason why I like my 92 over the later models.

I'm sure you'll figure something out though
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Old Nov 11, 2004 | 04:05 PM
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yea for 96 they changed a bunch of stuff for better and for worst. most for better though!

Sean
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Old Nov 11, 2004 | 04:29 PM
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I also hacksawed it off, still have part of it in there.
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Old Nov 11, 2004 | 04:39 PM
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haha yea there is still a piece of a mutilated bracket up there.
Sean
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Old Nov 11, 2004 | 05:05 PM
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I just bent the bracket out of the way... It was really soft metal and it tucks behind the header with no issues... I wonder how hard it is to pull a 6 speed out....

Last edited by gt306; Nov 11, 2004 at 05:05 PM. Reason: spelling
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Old Nov 11, 2004 | 05:05 PM
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Originally Posted by fsr402
You may be able to unbolt the cat and jut leave the bracket in there. but I'm not sure if it will touch the header or not. As far as I know or can think of is to remove the c-beam and drive shaft then lower the rear end of the trans. Useing a LONG extension remove the bolt.
I will be having my trans rebuilt when I put my headers in so this wont be a problem for me.

I already tried actually .. won't fit still. And half of the bracket was welded off last time i had exhaust work because the guys got so pissed at how hard it was to put the damn cat back on. I don't blame them!
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Old Nov 11, 2004 | 05:09 PM
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Originally Posted by redbullapril23
ok the cat bracket I know exactly what you are talking about!!!!!
on the drivers side i cut it with a saw zall! hard and scary!!!!
now the other side i managed to get a wrench up in there
thes 2 bolts you have to get off on top and on the side sticking out toward the drivers side. get the side one first and then cut the pipe with a saw zall below the precat. and if you get the other part of the header loose from it. meaning with the top bolt in it can rotate freely side to side. doing this you can move the cat to the side and reach the top bolt.
now the easiest thing to do on the drivers side is remove the inner fender panel next to the ac condensor. that way you can easily acess under the ac condensor. their are 4 bolts holding the ac in just remove them and swing the ac out of the way.
if you need anything else email me
your friend
Sean Blanton

YEP!! I got the passenger off after about 20 minutes of messing with the bolt and a really long 9/16ths.

I removed the a/c and all that, so i've got that covered... just that one damn bolt on the bell housing. It won't last long against my dremel though .
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Old Nov 11, 2004 | 05:09 PM
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Originally Posted by VictorRussell'92
I've never heard of a cat bracket. Is that something on the newer LT-1s?
I'll get a pic for you guys when i get home before i cut it off .
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Old Nov 11, 2004 | 05:10 PM
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Originally Posted by ittlfly
That must be just germain to the LT-4? Nothing like that on my 92 when I did my headers.
hehe... yeah, not sure why some have it some don't.
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Old Nov 11, 2004 | 05:11 PM
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Originally Posted by redbullapril23
i recommend cutting right before te cat because then when you get your exhaust welded up the shop can put 3 in tubing all the way back!
def better fro hp!
yep, having custom 3" made. Magnaflow mufflers, Magnaflow tips, magnaflow cats.
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Old Nov 11, 2004 | 05:11 PM
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Originally Posted by redbullapril23
yea for 96 they changed a bunch of stuff for better and for worst. most for better though!

Sean
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Old Nov 11, 2004 | 05:19 PM
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awesome glad I could help!
if you need anything coated I'm your man!
your friend
Sean Blanton
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Old Nov 11, 2004 | 10:41 PM
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Ok, I have the driver's side one on now. I'm not sure about how to hook up the a/c alt brackets though..
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