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LS1 swap for my '89 GTA

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Old Feb 26, 2014 | 10:30 AM
  #651  
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Re: LS1 swap for my '89 GTA

keep plugging along! it makes the end result that much better when you get all the bugs sorted out.

and as we both know, these cars are never "finished".
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Old Feb 26, 2014 | 11:01 AM
  #652  
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Car: 1989 Pontiac Trans Am GTA
Engine: cammed LS1
Transmission: Monster SS 4L65E
Axle/Gears: 9 bolt posi w/ 3.70 gears
Re: LS1 swap for my '89 GTA

Originally Posted by STREETDEMON
keep plugging along! it makes the end result that much better when you get all the bugs sorted out.

and as we both know, these cars are never "finished".
Thanks for the words of encouragement. I sure hope this fixes the problem.

Yeah, that's true, they are never finished. I am looking forward to the day that mine is "finished" enough that I can drive it again!
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Old Feb 26, 2014 | 01:03 PM
  #653  
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Re: LS1 swap for my '89 GTA

I so hope it works out for you this time. You've certainly earned it to get her back on the road.
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Old Feb 26, 2014 | 01:25 PM
  #654  
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Car: 1989 Pontiac Trans Am GTA
Engine: cammed LS1
Transmission: Monster SS 4L65E
Axle/Gears: 9 bolt posi w/ 3.70 gears
Re: LS1 swap for my '89 GTA

Originally Posted by NCC-2569
I so hope it works out for you this time. You've certainly earned it to get her back on the road.
Thanks Antony! I am keeping my fingers crossed.
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Old Mar 3, 2014 | 08:32 AM
  #655  
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Car: 1989 Pontiac Trans Am GTA
Engine: cammed LS1
Transmission: Monster SS 4L65E
Axle/Gears: 9 bolt posi w/ 3.70 gears
Re: LS1 swap for my '89 GTA

From an idea... to the "drawing board"
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To reality!
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I think it turned out really awesome. Next step is to have it powder coated. I am thinking either black or hammertone gray/black to match the BMR STB.

Here are a few more pics of it
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Front view. Added some nice black fasteners for when it's powder coated.

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Side view. As you can see, I still need to seal-up the box from removing the side tabs.

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Back view. I wanted it to cover most of the box. Mission accomplished.

Here's what it used to look like
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Last edited by dprest68; Mar 3, 2014 at 08:56 AM.
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Old Mar 3, 2014 | 08:41 AM
  #656  
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Re: LS1 swap for my '89 GTA

...

Last edited by LHernandezJr; Jul 18, 2014 at 01:32 PM.
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Old Mar 3, 2014 | 08:43 AM
  #657  
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Car: 1989 Pontiac Trans Am GTA
Engine: cammed LS1
Transmission: Monster SS 4L65E
Axle/Gears: 9 bolt posi w/ 3.70 gears
Re: LS1 swap for my '89 GTA

I got the RH head torqued down, RH rocker arms adjusted and RH valve cover installed yesterday. I wanted to knock that difficult side out first. It was definitely a challenge.

Here's the $57 bastard-sized thread chaser
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Feeling a little raped on this one, but it was needed to do the job correctly.
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Old Mar 3, 2014 | 08:43 AM
  #658  
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Re: LS1 swap for my '89 GTA

Very nice!
Regarding the box.

Regarding the chaser:
That's just how I feel with everything car-related I buy over here
Hopefully it's well-invested.
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Old Mar 3, 2014 | 08:49 AM
  #659  
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Car: 1989 Pontiac Trans Am GTA
Engine: cammed LS1
Transmission: Monster SS 4L65E
Axle/Gears: 9 bolt posi w/ 3.70 gears
Re: LS1 swap for my '89 GTA

Originally Posted by motobooks
That piece turned out AWESOME! I also like it in silver.
Thanks Luis! Yeah, it's kind of like a brushed aluminum as it is now and it does look pretty decent like that. I will probably keep it like this for awhile. I still have a little while before I will need to do anything with it.
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Old Mar 3, 2014 | 08:53 AM
  #660  
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From: Apopka, Florida
Car: 1989 Pontiac Trans Am GTA
Engine: cammed LS1
Transmission: Monster SS 4L65E
Axle/Gears: 9 bolt posi w/ 3.70 gears
Re: LS1 swap for my '89 GTA

Originally Posted by NCC-2569
Very nice!
Regarding the box.

Regarding the chaser:
That's just how I feel with everything car-related I buy over here
Hopefully it's well-invested.
Thanks Antony!

Yeah, I bet you do. It seems to be quite expensive to have one of these cars over there. Well, to do the job right, you sometimes have to invest in quality tools. So that is how I am looking at it.
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Old Mar 3, 2014 | 10:53 AM
  #661  
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Re: LS1 swap for my '89 GTA

Why not cut flutes in an old bolt with a cutoff wheel?

Cost $0
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Old Mar 3, 2014 | 11:25 AM
  #662  
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From: Apopka, Florida
Car: 1989 Pontiac Trans Am GTA
Engine: cammed LS1
Transmission: Monster SS 4L65E
Axle/Gears: 9 bolt posi w/ 3.70 gears
Re: LS1 swap for my '89 GTA

Originally Posted by Pocket
Why not cut flutes in an old bolt with a cutoff wheel?

Cost $0
Now you tell me! You always have good ideas Pocket.
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Old Mar 3, 2014 | 02:30 PM
  #663  
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Re: LS1 swap for my '89 GTA

Lol I did the same... work out great

Sweet airbox setup
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Old Mar 3, 2014 | 02:59 PM
  #664  
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Car: 1989 Pontiac Trans Am GTA
Engine: cammed LS1
Transmission: Monster SS 4L65E
Axle/Gears: 9 bolt posi w/ 3.70 gears
Re: LS1 swap for my '89 GTA

Originally Posted by Zach/90\irocZ
Sweet airbox setup
Thanks Zach!
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Old Mar 11, 2014 | 11:57 AM
  #665  
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Car: 1989 Pontiac Trans Am GTA
Engine: cammed LS1
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Axle/Gears: 9 bolt posi w/ 3.70 gears
Re: LS1 swap for my '89 GTA

YAY! I finally got mostly back together last night.
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I still have to get the battery back in it along with a few other odds and ends. Under the driver's side coil cover you can see the new fuel pressure gauge. I made a few other improvements while I had it all apart too. I left the rear bolt off of the coil bracket on the passenger's side when I put it all back together. It's just impossible to get to it back in that hole!

I love it when a plan comes together!
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I have to get the bottom air cleaner box finished now that the top is done.

Ran into this problem last night...
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I am going to buy two 5/8" rubber caps for the bolts, but I think I am going to cut the lower radiator hose back at the radiator. I'm hoping that will pull the hose away from the bolt some. Any input?

Last edited by dprest68; Mar 11, 2014 at 12:14 PM.
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Old Mar 11, 2014 | 01:36 PM
  #666  
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Re: LS1 swap for my '89 GTA

dprest68,
I had the same clearance problem with the radiator hose on my 84 Camaro(silverado lower hose). I cut the end of the bolt off so its even with the nut. I also put a sleeve over the hose for a little extra protection.

My 91 has a similar clearance issue but its not nearly as severe as yours(2002 Camaro hose).
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Old Mar 11, 2014 | 04:11 PM
  #667  
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Re: LS1 swap for my '89 GTA

You could put a guard around the hose, also. I usually just cut some old hose, and zip tie it to the outside of the hose.
Coupled with cutting the hose back to fit better, you have reasonable protection.

Like Zach, below, I also cut both ends of hose for better fit.

Last edited by Flip 2; Mar 11, 2014 at 04:34 PM. Reason: Add last line
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Old Mar 11, 2014 | 04:19 PM
  #668  
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Axle/Gears: 10 Bolt
Re: LS1 swap for my '89 GTA

I had issue as mention above and did what you plan I believe I cut on both ends for clearance
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Old Mar 11, 2014 | 06:41 PM
  #669  
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Car: 1989 Pontiac Trans Am GTA
Engine: cammed LS1
Transmission: Monster SS 4L65E
Axle/Gears: 9 bolt posi w/ 3.70 gears
Re: LS1 swap for my '89 GTA

Thanks for the input guys! I am going to go out and mess around with it now. I'm sure I can come up with a reasonable fix using your input.
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Old Mar 12, 2014 | 09:10 AM
  #670  
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Car: 1989 Pontiac Trans Am GTA
Engine: cammed LS1
Transmission: Monster SS 4L65E
Axle/Gears: 9 bolt posi w/ 3.70 gears
Re: LS1 swap for my '89 GTA

It took me a little while to get it right. I cut like a quarter of an inch off of the hose at a time until I got it to this...
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I ended up taking a quarter of an inch off of the top (water pump end) and a half inch off of the bottom. I used a 5/8" bypass cap over the nut. I trimmed that back about a quarter of an inch as well. Thanks for the help guys.

I also got the battery back in the car and a few other things taken care of. I will be tackling the K-member issue next.
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Old Mar 14, 2014 | 08:21 AM
  #671  
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Re: LS1 swap for my '89 GTA

I believe I had to modify my lower hose as well, and I still ended up wrapping an extra piece of hose around that area for an extra bit of comfort... lol

Glad to see that you're still plugging away at it.
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Old Mar 15, 2014 | 10:06 AM
  #672  
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From: Apopka, Florida
Car: 1989 Pontiac Trans Am GTA
Engine: cammed LS1
Transmission: Monster SS 4L65E
Axle/Gears: 9 bolt posi w/ 3.70 gears
Re: LS1 swap for my '89 GTA

Originally Posted by Jaysz28
I believe I had to modify my lower hose as well, and I still ended up wrapping an extra piece of hose around that area for an extra bit of comfort... lol

Glad to see that you're still plugging away at it.
Thanks for the input Jason. I appreciate it as always.

Yep, still plugging away at it. I am trying to have the car ready to take to the F-body Gathering on May 23rd in Atlanta. So I have to really focus on it to meet this deadline. I want to have it back on the road by April so that I have plenty of time to get the Y-pipe built & get it tuned and stuff.

Would you be interested in going to the F-body Gathering?
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Old Mar 15, 2014 | 10:27 AM
  #673  
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Car: 1989 Pontiac Trans Am GTA
Engine: cammed LS1
Transmission: Monster SS 4L65E
Axle/Gears: 9 bolt posi w/ 3.70 gears
Re: LS1 swap for my '89 GTA

I decided this week to switch over to a different heater control valve since I hadn't filled my cooling system back up yet. I figured it was better to do it now then to create a big mess later. I used the same valve that Ghettocruiser used. Here's his thread: https://www.thirdgen.org/forums/ltx-...-valve-ls.html

Just FYI, the valve flows coolant to the heater core when NO vacuum is applied. When vacuum is applied it loops the coolant back to the water pump. I wanted to make sure I knew how it worked before I installed it.

Here are a few pics...
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I retained the factory hard line. I had to put a ¾" bypass cap on the end of it.

Adapting the vacuum hose:
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Here's the stock end that comes on the vacuum hose. It doesn't fit the new valve.

I didn't have any hose that small that would fit the outlet on the new valve so I had to improvise. I took a vacuum cap that fit the valve and snipped the end off.
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Then I removed the stock end and installed the new end
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It worked like a champ.

After getting that all wrapped-up yesterday, I added coolant back in, double checked everything, then fired that puppy back up. VAROOOOM! And no leaks!!! YAY! It even ran better. I let it idle for about 5 minutes. It still pressurized the cooling system somewhat, but I haven't bled the air out of the cooling system yet, so I'm sure that was the cause of that.

Last edited by dprest68; Mar 15, 2014 at 10:34 AM.
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Old Mar 15, 2014 | 04:36 PM
  #674  
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Great news, Dave!
I hope that's it and we're going to get some nice videos soon
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Old Mar 15, 2014 | 07:39 PM
  #675  
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Re: LS1 swap for my '89 GTA

Car detailers used sulpheric acid on aluminum wheels years ago, I`m not sure what they use now. It worked great, but not good to breathe.
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Old Apr 3, 2014 | 02:13 PM
  #676  
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Re: LS1 swap for my '89 GTA

...

Last edited by LHernandezJr; Jul 18, 2014 at 01:32 PM.
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Old Apr 3, 2014 | 03:04 PM
  #677  
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From: Apopka, Florida
Car: 1989 Pontiac Trans Am GTA
Engine: cammed LS1
Transmission: Monster SS 4L65E
Axle/Gears: 9 bolt posi w/ 3.70 gears
Re: LS1 swap for my '89 GTA

Thanks for your help today Luis. It needs a tune, but I think it sounds awesome! Of course I am biased!

Here's what Luis and I accomplished this morning...
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Booyah!
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The first time the car has had four wheels on it in four years! I am dying to get all fours wheels on the ground to see what it looks like, but I have a lot to do to it before that happens.
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Old Apr 3, 2014 | 03:10 PM
  #678  
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Re: LS1 swap for my '89 GTA

...

Last edited by LHernandezJr; Jul 18, 2014 at 01:32 PM.
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Old Apr 3, 2014 | 03:19 PM
  #679  
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From: Apopka, Florida
Car: 1989 Pontiac Trans Am GTA
Engine: cammed LS1
Transmission: Monster SS 4L65E
Axle/Gears: 9 bolt posi w/ 3.70 gears
Re: LS1 swap for my '89 GTA

I got the k-member issue resolved by purchasing new rubber motor mounts. That was my last option, so I decided to give it a try. Here's the difference between the stock and poly motor mounts
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I put the driver's side motor mount on first since it was the side that was giving me troubles. As you can see, the holes all finally aligned. I never really even got close to that point before with the other mounts.
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I'm not sure what the real deal was with the poly mounts, but I sure am glad it's finally all back together and I can finally finish.
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Old Apr 3, 2014 | 03:32 PM
  #680  
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Car: 1989 Pontiac Trans Am GTA
Engine: cammed LS1
Transmission: Monster SS 4L65E
Axle/Gears: 9 bolt posi w/ 3.70 gears
Re: LS1 swap for my '89 GTA

I finally finished the ram air box as well
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Here are some progress pics that I took along the way...
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I had to trace out the metal pieces that I needed to fill-in the sides of the box.

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All traced, just had to cut them out after that with metal shears

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I cut them a little big, then had to trim them back to fit.

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Then I epoxied them in place

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Then came the body filler and lots of sanding

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Then came the glazing putty and some more sanding. After I had it the way I wanted it, I shot some bed liner paint on it to give it texture, then hit it with some SEM paint to finalize it.

Last edited by dprest68; Apr 3, 2014 at 03:34 PM. Reason: wrong picture
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Old Apr 3, 2014 | 03:36 PM
  #681  
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From: Apopka, Florida
Car: 1989 Pontiac Trans Am GTA
Engine: cammed LS1
Transmission: Monster SS 4L65E
Axle/Gears: 9 bolt posi w/ 3.70 gears
Re: LS1 swap for my '89 GTA

Oh, and I forgot to show you guys the wheels I finally ended up with on my G8
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Firehawk wheels
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Old Apr 3, 2014 | 04:09 PM
  #682  
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Car: 1989 Pontiac Trans Am GTA
Engine: cammed LS1
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Axle/Gears: 9 bolt posi w/ 3.70 gears
Re: LS1 swap for my '89 GTA

Oops... I forgot to add what we did with the springs. First I replaced the stock insulators that were shot with heater hose.
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Of course a liberal coat of grease is important to this task.

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The springs fit up into the spring pockets on the k-member perfectly with the hose on there. It was a nice snug fit.

I cable tied the spring to the upper spring pocket just to keep it in place. After indexing the spring properly in the a-arm I added a chain around everything just to be safe. Initially I tried lifting the a-arm up into place like this, but it wasn't working. It was just lifting the car up.
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Next I installed the spindle assembly in the strut camber plate, then on the a-arm ball joint.
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Then we decided that using two jacks was going to be necessary to get the a-arm up into place correctly. We actually needed a third bottle jack on the passenger side.
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From that point we just slowly worked the a-arm up into place making adjustments along the way until we were finally able to get the a-arms bolts into place. Done!

We did try the spring compressor before, but the results weren't very good. I found another thread on this site where one of the member tried it this way, so I thought it would be worth a try if I can avoid using that darn spring compressor.
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Old Apr 3, 2014 | 04:11 PM
  #683  
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From: Danville, IN
Car: 1991 Camaro Z28
Engine: LS1
Transmission: 4L60E
Axle/Gears: Strange 12 Bolt, 3.42
Re: LS1 swap for my '89 GTA

Glad to see that your car is running, always a sense of accomplishment when you get to hear it run. Great choice on the wheels for the G8!
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Old Apr 3, 2014 | 08:27 PM
  #684  
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From: Apopka, Florida
Car: 1989 Pontiac Trans Am GTA
Engine: cammed LS1
Transmission: Monster SS 4L65E
Axle/Gears: 9 bolt posi w/ 3.70 gears
Re: LS1 swap for my '89 GTA

Originally Posted by jbenge
Glad to see that your car is running, always a sense of accomplishment when you get to hear it run. Great choice on the wheels for the G8!
Thanks J'! Yeah, I knew I had to have those wheels as soon as I saw them.
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Old Apr 4, 2014 | 12:43 AM
  #685  
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Car: 1990 Trans Am
Engine: 305 TPI
Transmission: Auto
Axle/Gears: Stock
Re: LS1 swap for my '89 GTA

Definitely needed to hear the vid clip over my sound system.
A phone speaker can't do this engine justice

Very glad to hear things are coming together. Good job, guys!

About the engine mounts, who manufactured them?
They way I see it, they won't fit even a regular engine if they give you so much trouble.
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Old Apr 4, 2014 | 07:03 AM
  #686  
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Car: 88 iroc vert
Re: LS1 swap for my '89 GTA

what all did you order from bigbrake and what was your total? im thinking of sending my spindles to them. i think my buddy can modify my hubs?
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Old Apr 5, 2014 | 01:15 PM
  #687  
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From: Apopka, Florida
Car: 1989 Pontiac Trans Am GTA
Engine: cammed LS1
Transmission: Monster SS 4L65E
Axle/Gears: 9 bolt posi w/ 3.70 gears
Re: LS1 swap for my '89 GTA

Originally Posted by NCC-2569
Definitely needed to hear the vid clip over my sound system.
A phone speaker can't do this engine justice

Very glad to hear things are coming together. Good job, guys!

About the engine mounts, who manufactured them?
They way I see it, they won't fit even a regular engine if they give you so much trouble.
Thanks Antony!

They are Prothane poly mounts. You would think that, but they worked fine with the stock k-member for whatever reason.
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Old Apr 5, 2014 | 01:20 PM
  #688  
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From: Apopka, Florida
Car: 1989 Pontiac Trans Am GTA
Engine: cammed LS1
Transmission: Monster SS 4L65E
Axle/Gears: 9 bolt posi w/ 3.70 gears
Re: LS1 swap for my '89 GTA

Originally Posted by Gecz28
what all did you order from bigbrake and what was your total? im thinking of sending my spindles to them. i think my buddy can modify my hubs?
I had Bigbrake modify my spindles & install the brackets, I bought new braided lines and solo bleeders and I had him powder coat everything including my calipers. My spindles came back assembled and ready to put on the car. I can't remember how much it cost me, but it was well worth it. I definitely recommend Bigbrake.com. Give them a call, they can give you a quote for what you need done.
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Old Apr 5, 2014 | 01:27 PM
  #689  
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From: Apopka, Florida
Car: 1989 Pontiac Trans Am GTA
Engine: cammed LS1
Transmission: Monster SS 4L65E
Axle/Gears: 9 bolt posi w/ 3.70 gears
Re: LS1 swap for my '89 GTA

I had to put it on the ground today. Not by choice though. The spring broke on my garage door yesterday, so I had to move the car forward to give the guy room to fix it.

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As you can see, the front end still needs to settle-in. And it needs an alignment real bad

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The back looks perfect though! The car has been sitting on the rear springs for quite awhile. So I suspect they have already settled back there. The gap around the tire seems pretty even all the way around. I am real happy with it.
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Old Apr 6, 2014 | 04:55 AM
  #690  
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Car: 91 Firebird
Engine: 6.0
Transmission: T56
Axle/Gears: 3.73
Re: LS1 swap for my '89 GTA

rear gap is perfect

front gap will change with some miles, and most obviously with an alignment
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Old Apr 6, 2014 | 09:19 AM
  #691  
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From: Apopka, Florida
Car: 1989 Pontiac Trans Am GTA
Engine: cammed LS1
Transmission: Monster SS 4L65E
Axle/Gears: 9 bolt posi w/ 3.70 gears
Re: LS1 swap for my '89 GTA

Originally Posted by Jaysz28
rear gap is perfect

front gap will change with some miles, and most obviously with an alignment
Yep. The front has already settled a little since I took that picture.
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Old Apr 6, 2014 | 09:27 AM
  #692  
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From: Apopka, Florida
Car: 1989 Pontiac Trans Am GTA
Engine: cammed LS1
Transmission: Monster SS 4L65E
Axle/Gears: 9 bolt posi w/ 3.70 gears
Re: LS1 swap for my '89 GTA

Luis is coming over today to help me bleed the brakes and get the hood back on it. I order the rest of my exhaust pieces (electric cut-out & some band clamps). They will be in this coming week. I plan on getting the car over to my mechanic this week to get the A/C working, align the front end, work out a few bugs and double check everything for road-worthiness. After that it will be heading to the exhaust shop to have the y-pipe made. Then it will be off to the tuner. That's the plan at least.
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Old Apr 6, 2014 | 10:41 PM
  #693  
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Re: LS1 swap for my '89 GTA

...

Last edited by LHernandezJr; Jul 18, 2014 at 01:33 PM.
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Old Apr 6, 2014 | 11:15 PM
  #694  
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From: Apopka, Florida
Car: 1989 Pontiac Trans Am GTA
Engine: cammed LS1
Transmission: Monster SS 4L65E
Axle/Gears: 9 bolt posi w/ 3.70 gears
Re: LS1 swap for my '89 GTA

^ You and your candid videos! Glad I didn't do anything embarrassing!

Having to two-foot drive it was no fun. It will be resolved once I get it tuned I'm sure. I was being very cautious backing it out of the garage since that was the first time it had moved under its own power and my driveway is on an incline. I wanted to make sure I was going to be able to stop the car going down it. The LS1 brakes are awesome even though they aren't completely bled properly.

Oops. Left some rubber in front of the neighbors house.
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Started to spin the tires, then it down-shifted into first and spun them some more. From inside the car it didn't seem like the tires were spinning.

Can't wait for that front suspension to settle.
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Old Apr 6, 2014 | 11:52 PM
  #695  
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From: gladstone
Car: 72 nova/ 90 camaro rs,04 suburban
Engine: blown 327/ 355/306/355/5.3
Transmission: muncie 4 speed/T5/powerglide,4l80e
Axle/Gears: 342/411/456/ moser axles
Re: LS1 swap for my '89 GTA

nice job!
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Old Apr 6, 2014 | 11:53 PM
  #696  
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From: Apopka, Florida
Car: 1989 Pontiac Trans Am GTA
Engine: cammed LS1
Transmission: Monster SS 4L65E
Axle/Gears: 9 bolt posi w/ 3.70 gears
Re: LS1 swap for my '89 GTA

Originally Posted by 90camaro355rs
nice job!
Thanks man! I appreciate it.
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Old Apr 7, 2014 | 12:19 AM
  #697  
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From: Germany
Car: 1990 Trans Am
Engine: 305 TPI
Transmission: Auto
Axle/Gears: Stock
Re: LS1 swap for my '89 GTA

Ha haaa, nice, guys
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Old Apr 7, 2014 | 08:30 AM
  #698  
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Car: '89 Camaro
Engine: LS1
Transmission: 4L65/70E
Axle/Gears: 9 Inch, 3.70 gears
Re: LS1 swap for my '89 GTA

I couldn't even tell you how long I've been waiting for this to move under it's own power. Great job, looks like only a few little things left to do before it's "done".
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Old Apr 7, 2014 | 09:00 AM
  #699  
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From: Kansas
Car: 91 Z28
Engine: 6.0L LQ9
Transmission: T56
Axle/Gears: Dana 44 3.92
Re: LS1 swap for my '89 GTA

glad to see it under its own power!
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Old Apr 7, 2014 | 09:24 AM
  #700  
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From: Texas
Car: 1989 IROC LSX
Engine: Swapped LS6 Forged by LME
Transmission: 4L65E
Axle/Gears: 3.73
Re: LS1 swap for my '89 GTA

Always a happy moment! Car is awesome!
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