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aaron_sK Member
Joined: 23 Jan 2006 Posts: 8834 Location: Back in beautiful Tacompton
1987 Chevrolet Camaro IROC-Z
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Posted: Sat Mar 02, 2013 9:35 pm Post subject: |
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The coolant system on a fourthgen is a pressurized surge tank system with the radiator below the engine. Just by installing it in a thirdgen you're solving a lot of air pocket issues by eliminating the heads as the highest point in the system.
The only potential issue I see with running it into the water pump is that the LSx has an internal bypass inside the water pump housing due to the draw-through t-stat. Theoretically it seems if there was air in the tubes you could run it through the system until the stat opened.
All that said, my two cents are if you can get the air out of a BMW system then a Camaro is easy money. Don't worry too much about it.  |
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Alphius Peanut

Joined: 05 Sep 2006 Posts: 2429 Location: Grand Mound
1984 Chevrolet Camaro Z/28
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Posted: Sun Mar 03, 2013 12:14 am Post subject: |
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The spot where I drilled and tapped is right before the unimpeded return line to the top of the radiator. It's not going to circulate steam through the engine from there. _________________ 84 Camaro Z28 - LS1/T56
85 Silverado - Low and Slow |
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aaron_sK Member
Joined: 23 Jan 2006 Posts: 8834 Location: Back in beautiful Tacompton
1987 Chevrolet Camaro IROC-Z
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Posted: Sun Mar 03, 2013 7:44 am Post subject: |
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If it's tapped straight into the upper rad hose then you'll be fine. The factory steam line entered the radiator right next to the upper radiator hose anyway.  |
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Alphius Peanut

Joined: 05 Sep 2006 Posts: 2429 Location: Grand Mound
1984 Chevrolet Camaro Z/28
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Posted: Sun Mar 03, 2013 8:32 am Post subject: |
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| aaron_sK wrote: | If it's tapped straight into the upper rad hose then you'll be fine. The factory steam line entered the radiator right next to the upper radiator hose anyway.  |
That's what I figured. This is as close to factory as I am gonna get while not being able to return to the radiator. _________________ 84 Camaro Z28 - LS1/T56
85 Silverado - Low and Slow |
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Alphius Peanut

Joined: 05 Sep 2006 Posts: 2429 Location: Grand Mound
1984 Chevrolet Camaro Z/28
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Posted: Sat Mar 09, 2013 6:21 pm Post subject: |
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Finished extending my ECU harness last night.
Also I finished my C100 harness today and battery/alternator/fusebox wiring. The end result of this is that I can now crank the LS1! It spins over and sounds healthy, now I just have to finish my relay wiring and gauge wiring tomorrow and I should be able to start it up. _________________ 84 Camaro Z28 - LS1/T56
85 Silverado - Low and Slow |
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Schultzy89GTA M.R.A. (11sec Club)

Joined: 08 Jan 2004 Posts: 4417 Location: Gresham, OR
1989 Pontiac GTA
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Posted: Sun Mar 10, 2013 4:48 pm Post subject: |
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Excited much?
-Schultzy |
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Twilightoptics Hardcore (12sec Club)

Joined: 13 Jan 2004 Posts: 9191 Location: Auburn , WA
1987 Chevrolet Camaro IROC-Z
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Posted: Sun Mar 10, 2013 7:27 pm Post subject: |
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DO IT!!!! _________________ A redline a day keeps the carbon away! |
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Alphius Peanut

Joined: 05 Sep 2006 Posts: 2429 Location: Grand Mound
1984 Chevrolet Camaro Z/28
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Posted: Sun Mar 10, 2013 7:50 pm Post subject: |
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I am a mix of excited and let down.
Wiring is all done. It runs and drives. All the gauges work. My heater core might be bad all of a sudden. Very odd since it's only like 5 years old and it was fine before the swap.
It runs super crappy. Revs slow, has no power, vibrates terribly. Pulls codes P0353, P0355 and P0357. 3 out of 4 coils on the driver's side apparently aren't firing. Probably all 4. Manifold is cool to the touch on that side. I am going to check coil power wiring tomorrow, I am too beat to keep working on it tonight. I bet I forgot to solder up the coil power, ground or reference for that bank.
Here's a first start video. It didn't take much to get it fired up. I was almost expecting a little more drama. You can tell it isn't running right though. Also it was burning off a lot of stuff from the new exhaust and presumably some crud from sitting around for so long. The smoke cleared up after about 5 minutes.
http://www.youtube.com/watch?v=0MsnnzWBdMc _________________ 84 Camaro Z28 - LS1/T56
85 Silverado - Low and Slow
Last edited by Alphius on Sun Mar 10, 2013 7:52 pm; edited 1 time in total |
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Twilightoptics Hardcore (12sec Club)

Joined: 13 Jan 2004 Posts: 9191 Location: Auburn , WA
1987 Chevrolet Camaro IROC-Z
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Posted: Sun Mar 10, 2013 7:52 pm Post subject: |
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Sweet man. You'll get it sorted~!! _________________ A redline a day keeps the carbon away! |
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hnkajnk New Member
Joined: 30 May 2011 Posts: 10
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Posted: Sun Mar 10, 2013 8:10 pm Post subject: |
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I am sure you will get it right soon. A lot of work into it so far. You are on the home stretch, I am excited.  |
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RSFreak The other "John"

Joined: 23 Jan 2004 Posts: 2946 Location: Renton
1989 Chevrolet Camaro RS
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Posted: Sun Mar 10, 2013 8:58 pm Post subject: |
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Nice! You'll have it ready for dyno for sure!  |
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fiveoformula Member

Joined: 08 Aug 2007 Posts: 1799 Location: OR
1988 Pontiac Formula
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Posted: Sun Mar 10, 2013 10:03 pm Post subject: |
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Awesome man! Good progress! _________________
'88 FORMULA |
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Quasi-Traction "I have petals"

Joined: 24 Oct 2005 Posts: 3873 Location: stumptown
1986 Chevrolet Camaro Berlinetta
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Posted: Mon Mar 11, 2013 7:21 pm Post subject: |
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Awesome dude! I'm sure you'll have her dialed in, in no time.
Can't wait to see it in person.  |
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Alphius Peanut

Joined: 05 Sep 2006 Posts: 2429 Location: Grand Mound
1984 Chevrolet Camaro Z/28
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Posted: Mon Mar 11, 2013 8:32 pm Post subject: |
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Dialed in... about that...
Turns out if you forget to hook up the coilpack ground for an entire bank it runs shitty. File that under "stuff nobody would have guessed".
As I found it:
So, in essence,
http://www.youtube.com/watch?v=fcG5WBpqaZA
It sounds much better in person. GREAT exhaust tone.
I am getting an alternator tomorrow, the bearings on mine are shot (but it still charges!). Need to put my interior back together and I am good.  _________________ 84 Camaro Z28 - LS1/T56
85 Silverado - Low and Slow |
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Schultzy89GTA M.R.A. (11sec Club)

Joined: 08 Jan 2004 Posts: 4417 Location: Gresham, OR
1989 Pontiac GTA
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Posted: Mon Mar 11, 2013 8:34 pm Post subject: |
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Oh hell ya! That sounds good. Congrats
-Schultzy |
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aaron_sK Member
Joined: 23 Jan 2006 Posts: 8834 Location: Back in beautiful Tacompton
1987 Chevrolet Camaro IROC-Z
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Posted: Mon Mar 11, 2013 8:41 pm Post subject: |
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Gabe is making friends with the neighbors.
That sketchy alternator turned out to be a POS after all, ehh?  |
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Twilightoptics Hardcore (12sec Club)

Joined: 13 Jan 2004 Posts: 9191 Location: Auburn , WA
1987 Chevrolet Camaro IROC-Z
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Posted: Mon Mar 11, 2013 9:02 pm Post subject: |
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Could just buy some bearings for cheap.... _________________ A redline a day keeps the carbon away! |
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RSFreak The other "John"

Joined: 23 Jan 2004 Posts: 2946 Location: Renton
1989 Chevrolet Camaro RS
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Posted: Mon Mar 11, 2013 9:21 pm Post subject: |
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| Sounds nice! Do you have to "trick" the cpu to run without cats? |
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Alphius Peanut

Joined: 05 Sep 2006 Posts: 2429 Location: Grand Mound
1984 Chevrolet Camaro Z/28
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Posted: Mon Mar 11, 2013 9:36 pm Post subject: |
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| Twilightoptics wrote: | | Could just buy some bearings for cheap.... |
Apparently the LS1 alternator needs more work to split the case and replace the bearings than an older alternator. I don't know for sure, I just don't want to mess with it. So, new alternator with a warranty tomorrow.
| RSFreak wrote: | | Sounds nice! Do you have to "trick" the cpu to run without cats? |
Yep, mine was mail order tuned by Frost Performance. Rear O2 delete (kills the catalyst efficiency codes), EVAP system delete, AIR delete, CAGS (skip-shift) delete and VATS delete. Plus some tweaking on the other tables for more power, fan turn on speed lowered and some miscellaneous other tweaks. In the interest of not messing with it anymore, I didn't buy HPTuners and do it myself, although I could have. Also, HPT is $500 and the tune I got was $150. _________________ 84 Camaro Z28 - LS1/T56
85 Silverado - Low and Slow |
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aaron_sK Member
Joined: 23 Jan 2006 Posts: 8834 Location: Back in beautiful Tacompton
1987 Chevrolet Camaro IROC-Z
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Posted: Mon Mar 11, 2013 10:30 pm Post subject: |
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| Alphius wrote: | | Apparently the LS1 alternator needs more work to split the case and replace the bearings than an older alternator. |
With your electronic background would fare a lot better than most. You have to desolder leads to fully split the case on a CS130D. Not like an old SI where you took a couple bolts out and then tapped new bearings. |
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