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Old Jul 16, 2003 | 09:50 PM
  #1  
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From: Roscoe, IL
Car: 1991 Trans Am
Engine: LQ4
Transmission: T-56
Axle/Gears: 3.70
Header Installation

Alright, I started to pull the smog crap off tonight. From my searchs, I learned that the pump should just fall right out when I take out the two torx bolts. Wasn't the case, even with a little "convincing". Is there other bolts somewhere? I'm sure I'll have more frustrations along the way, so I'll just post 'em here.
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Old Jul 17, 2003 | 12:07 AM
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I think that there is a long bolt that runs through the length of the alternator housing. It threads through the bracket that holds the AIR check valves in place, and screws into the head.
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Old Jul 17, 2003 | 12:25 AM
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From: Roscoe, IL
Car: 1991 Trans Am
Engine: LQ4
Transmission: T-56
Axle/Gears: 3.70
Originally posted by 85qjet
I think that there is a long bolt that runs through the length of the alternator housing. It threads through the bracket that holds the AIR check valves in place, and screws into the head.
do you mean the a/c, because my alternator is on the other side of the engine?
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Old Jul 17, 2003 | 07:12 AM
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From: Naples, FL
Car: 1991 Firebird
Engine: 383 stroker
Transmission: T-56
Did you remember to take the belt off? I wish I could help you out but I took my pump off like 5 years ago and can't remember for the life of me how is was fastened on.
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Old Jul 17, 2003 | 09:58 AM
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after i took the metal tube hooked off the back of the pump, i lossened the pump pulley, then pulled the belt off, after that pulled the pulley off, then got the two long bolts holding the smog pump. i dont recall any more bolts. but it didnt really slid out, my trusty screwdriver did the trick.
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Old Jul 17, 2003 | 11:05 AM
  #6  
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From: Roscoe, IL
Car: 1991 Trans Am
Engine: LQ4
Transmission: T-56
Axle/Gears: 3.70
well, i finally got the pump off, but it took a few hard hits with a hammer, not just prying it like i tryed before. Then, look what showed up in big box marked jet-hot now my only problem is those damn clips that are on the manifold bolts, any tips on getting those off?
Attached Thumbnails Header Installation-dscn2912.jpg  
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Old Jul 17, 2003 | 12:10 PM
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From: East Tennessee
Car: 1992 Z28 Heritage Edition
Engine: L98
Transmission: T56
Axle/Gears: 3.23:1
Just work at them. I'm not 100% sure what everyone means by "clips", but whatever they are, I must have encountered them within the past week.

Anyway, just work at them. If you have any problems, post them, its been my experience that everyone here is more than willing to help.

BTW: Get some penetrating oil.

My only other suggestion, Make 100000000% sure you are fully on all of the bolts. The manifold bolts are not incredibly hard metal for some reason, they like to round off easy.
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Old Jul 17, 2003 | 01:11 PM
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From: Roscoe, IL
Car: 1991 Trans Am
Engine: LQ4
Transmission: T-56
Axle/Gears: 3.70
i sprayed everything yesterday with crc penetrating oil, made things much easier, 1 bolt was even loose, heck i got 3 of the 4 collector bolts off without heating them. o2 sensor doesnt want to go anywhere. i finally got the driver side manifold off, and i still cant get it out
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Old Jul 17, 2003 | 02:34 PM
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From: East Tennessee
Car: 1992 Z28 Heritage Edition
Engine: L98
Transmission: T56
Axle/Gears: 3.23:1
My O² sensor is STUCK in there too. Any ideas on removal?
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Old Jul 17, 2003 | 02:35 PM
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From: Ocean, NJ
Car: Check The Sig
oh boy, i cant wait to get the manifolds off... im crying on the inside already...
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Old Jul 17, 2003 | 02:37 PM
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From: East Tennessee
Car: 1992 Z28 Heritage Edition
Engine: L98
Transmission: T56
Axle/Gears: 3.23:1
I'm FINALLY making some progress today. A friend came over and we actually got the pass side on!

I'm happpppppyyyyy....

Now its just a matter of getting the other side done.
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Old Jul 17, 2003 | 03:09 PM
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From: Powder Springs, Georgia, USA
Car: 1992 Black Z28 Hardtop
Axle/Gears: 2002 10 bolt w/3:23
Originally posted by Dante93GTZ
My O² sensor is STUCK in there too. Any ideas on removal?
Replace it, only about $35.00. If it has been in the car long it is probably degrading performance.
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Old Jul 19, 2003 | 01:11 PM
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From: Roscoe, IL
Car: 1991 Trans Am
Engine: LQ4
Transmission: T-56
Axle/Gears: 3.70
update: stuck the manifold in the vise, and got the o2 out no prob. got the other collector bolt out, y-pipe was gone. then i started on the passenger side. i got the first 4 bolts (front to back) out no problem, but that 5th one didnt want to come out. after about 4-5 hours of beating the **** outta the heat shield, it finally came out. got the passenger side off finally, install starts tonight when i get home from work, hopefully it will be easier. also, i bought some moroso wire looms, the instructions say youre supposed to use the stock hardware, my stock looms were on the heat shield, so i need to know what size bolt do i need for the hole in the head? heres a pic of what im talking about
Attached Thumbnails Header Installation-dscn2969.jpg  
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Old Jul 19, 2003 | 09:53 PM
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From: kentucky
I had to grind out clearance for my Moroso looms on my hedmans before I sent them off to jet-hot... Did you position one to see if that loom mounting hole is still exposed? I can post a pic if you'd like to see....
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Old Jul 19, 2003 | 10:20 PM
  #15  
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From: Roscoe, IL
Car: 1991 Trans Am
Engine: LQ4
Transmission: T-56
Axle/Gears: 3.70
Originally posted by RICHRAD
I had to grind out clearance for my Moroso looms on my hedmans before I sent them off to jet-hot... Did you position one to see if that loom mounting hole is still exposed? I can post a pic if you'd like to see....
no, i didnt even think about that, but it only figures. i tried to test fit it on the driver side, but i couldnt even get the flange flush with the head, so it looks like im going to have to jack it up
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Old Jul 19, 2003 | 10:47 PM
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From: kentucky
With my Hedman shorties.....pass. side went in with ease if I tilted it certain ways as I lowered it in (starter out I think)..... on the drivers side, I started by taking off the steering column bolts (inside firewall ) to move it over out of the way...didn't move much and wasn't making progress, only scratching the jet-hot....so I took a break....Heard too many stories of how much these columns move so I went back inside the T/A and sure enough found a column bolt I missed.... This thing moved big time afterwards....header dropped right in, but had to bend some brake lines.......not sure if I bent them enough..... Also I had the valve covers off thinking it made a little more space.... good luck with them
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Old Jul 19, 2003 | 10:49 PM
  #17  
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From: kentucky
oh yeah ,forgot, pulled the engine mount bolt too but the block wouldn't budge...
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Old Jul 20, 2003 | 01:21 AM
  #18  
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From: Roscoe, IL
Car: 1991 Trans Am
Engine: LQ4
Transmission: T-56
Axle/Gears: 3.70
well, right after i posted the above, me and my dad went to work. we just decided to jack up the motor because it would be easier that way. pulled out the mount bolt, had to convince it with a crow bar to get them out, but they came. jacked it up a little, they still didnt want to fit, so we went higher. didnt undo the steering, or take off the valve cover, got that side in from up top with not much of a problem. went to the passenger side, no way to get it in from the top, tried the bottom. either the bellhousing or the coolant line that runs on the frame rail were in the way. went up a little higher with the motor, but the fan switch was still in the way. went up a little more, finally got it up there. now all i have to do is the plugs, wires, cap & rotor, fuel filter, and change rear-end fluid, and this project will be over. i just decided forget the wire looms, im not pulling these things out again, so anyone want to buy them? i painted them black with some high temp paint because the blue didnt really look all the good
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Old Jul 22, 2003 | 09:12 PM
  #19  
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From: kentucky
Was taking pics of the brake line / header clearance anyways so I thought i'd post this....If the looms are like these, they might still work for you by doing some trimming and using sockethead screws
Attached Thumbnails Header Installation-wire-looms.jpg  
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Old Jul 23, 2003 | 04:25 PM
  #20  
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From: Saskatoon, SK, Canada
Car: '83 Z28, '07 Charger SRT8
Engine: 454ci, 6.1 Hemi
Transmission: TH350, A5
Axle/Gears: 2.73 posi, 3.06 posi
What is that wire loom above the flange bolted to? I've never seen bolt holes there, on my 305 or 350. You drill and tap 'em yourself?
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Old Jul 23, 2003 | 09:09 PM
  #21  
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From: kentucky
Originally posted by Air_Adam
What is that wire loom above the flange bolted to? I've never seen bolt holes there, on my 305 or 350. You drill and tap 'em yourself?
factory tapped holes on my l98 alum heads they are...must have been mountings for the vette
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