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My Iroc LS1/T56 Swap Build Thread (56k Death)

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Old 07-07-2010, 10:05 PM
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Default My Iroc LS1/T56 Swap Build Thread (56k Death)

So... I just picked up an '86 Iroc Yesterday for 400. No Motor/No Trans... PERFECT!! I'm planning an LS1 or LS2/T56 Swap. This will be my build thread... I've got a LOT of work to do... started ripping it apart today. I want to put the 4th Gen interior into it, not sure if I want to put the 4th Gen dash into it... but basically it'll be a 4th gen in a 3rd Gen's body. I'm going to paint it the same blue/white combo as my SS. Not sure if I want white/blue though... Kinda want the hood with the SS Scoop but I'm still debating on it... I guess we'll figure that out later huh? Here's some pics of what I got so far...

Plans Include:
LS1 or LS2 Stroker
4th Gen Fuel Tank
Walbro Fuel Pump
FAST Intake/TB
Built T56
Monster Stg 4 Clutch
BMR Tubular K-Member
BMR Coil Over Conversion Kit w/ A-Arms
Subframe connectors
Tubular LCA's
Adjustable PHR
Adjustable TQ Arm
Eibach Prokit Springs
9" Rear w/ 4.11's
4th Gen Leather Seats
Autometer C2 Gauges
SS Style Hood
and quite a bit more that I have yet to figure out

Freshly Home


Gotta Love The Olds Cutlass Rims




The Custom Stripes W/ Airbrushing:


Interior Shots:


No Steering Wheel only 4k Miles!!! lol


Custom Headliner


Breakaway Seatbelts




Under Hood



Starting to Remove stuff under the hood




Pulling out the PCM



Back under the hood... Engine Harness Halfway out:





Passenger side


Pile of Excess Materials.... Including the Crescent Wrench I found!!

Anyone need parts??

Last edited by BlueMagicSS; 07-12-2010 at 10:28 PM. Reason: Added build info
Old 07-07-2010, 10:19 PM
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WOW!
Thats a project right there

Good luck
Old 07-08-2010, 09:03 AM
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you got a lot of work ahead of yourself. Good luck bro! Take your time and dont take any short cuts.
Old 07-08-2010, 02:55 PM
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Originally Posted by ramair21
you got a lot of work ahead of yourself. Good luck bro! Take your time and dont take any short cuts.
Thanks... yeah it's a lot of work... but I've got my feelers out for an LS1 Interior with the Dash right now... so that'll make life a little easier... at least there's no engine/trans in it...

ramair21 I had a question about removing the wiring harness from the old engine. I got it completely out until I got to the plug to the Gauge cluster on the driver's side of the engine compartment. It's on the same plug as the headlight harness... how did you get around this?? Thanks in advance
Old 07-08-2010, 03:36 PM
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1/4 bolt in the middle of it

Lucky for you that has most of the original TPI harness so you know its an EFI car

Saves you from having to add a new fuseblock, run a fuel pump wire or change the gas tank sender
Old 07-08-2010, 04:12 PM
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Originally Posted by Pocket
1/4 bolt in the middle of it

Lucky for you that has most of the original TPI harness so you know its an EFI car

Saves you from having to add a new fuseblock, run a fuel pump wire or change the gas tank sender
Yup... I got the 1/4" bolt out, but it's connected to the headlamp wiring harness in the same plug. So my question is since this seems to be all one plug, what do I do about the headlight harness that is connected to it as well?



Old 07-09-2010, 07:20 AM
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That's actually two plugs clipped together. You should be able to release those clips on the side and pull the plugs apart. Its pretty easy, just mess with it a little and you'll get them apart. The big one goes to the engine harness and the little one goes to the lights, horns, turn signals, etc.
Old 07-09-2010, 08:12 AM
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Correct, you can actually see the clips in your pics
Old 07-09-2010, 01:21 PM
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Ok thanks... I saw that but it didn't look like they came apart. I'll get back out there today and mess with it.
Old 07-09-2010, 01:48 PM
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Wow thats a heck of a project. That puppy is rough. But actually a decent swap candidate since you're gutting most of it anyway.

I see you are in CA. If you are planning on having it pass SMOG, you might have to consider the 4th gen dash. Also the 4th gen fuel tank. In short, you need those two so that the vehicles EVAP system functions as it did in the 4th gen.

Pocket might be able to correct me on that...or someone that's swapped for CA emissions. Not sure if you can just retain the 3rd gen EVAP system, but Id ont think you can. And the 4th gen EVAP wont work without the tank and the cluster to go with it.

Good luck and keep posting pics/questions! Should turn out nice for ya if you take your time and cover all your bases!

J.
Old 07-09-2010, 03:13 PM
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Wow dude. props to you on taking such a project. Just take your time with it, were here to help
Old 07-09-2010, 06:34 PM
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You can use the 3rd gen EVAP canister, but a CA swap will require the 4th gen tank and it's built in back there, so it makes no difference if the 3rd gen piece fits
Old 07-10-2010, 01:33 AM
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Yes I do have a bit of a project ahead of me... I was hoping the interior was a bit better... but oh well... for $400 I can't complain too much. The body is straight minus a dent or two... And it's getting painted anyways.

And yes for it to be a legal swap I need the Evap system, AIR, EGR, Cats and all the fun stuff.... BUT with me wanting to do Stroker/Cam/Heads, etc... probably not gonna happen... oh well... That's why it pays to be a Smog Tech... Or I'll just pay someone else to Smog it... Gotta love CA Emissions
Old 07-10-2010, 07:28 AM
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cool project. gotta love the low dollar 3rd gens, makes things interesting. i'm doing over a $600 87 T/A. pocket's the man with wiring info on these cars. best of luck with the swap
Old 07-10-2010, 10:11 AM
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your going to LOVE the 4th gen interior in the car. except the door pannels are quite a pain there kicking my A$$ right now. good luck with your build
Old 07-10-2010, 05:11 PM
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Nice project you got there! You may shoot a PM to Pocket and ask him to build you a harness. He made mine and my car works 100% correct! Ask if you have questions, there's quite a few of us that have blazed the trail already
Old 07-11-2010, 03:33 PM
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Default Looks like fun there

Nice project you got going on now. I also like the color of your Camaro SS. It's beautiful.
Old 07-11-2010, 04:49 PM
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Originally Posted by IROCZTPI
Nice project you got going on now. I also like the color of your Camaro SS. It's beautiful.
Thanks.... I'm going to be painting this one the same color
Old 07-12-2010, 01:17 AM
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good luck 3rd gen ls swaps are fun!
Old 07-12-2010, 01:58 AM
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Originally Posted by TPI TERROR
good luck 3rd gen ls swaps are fun!
Thanks.... it's a swap I've been wanting to do for the longest... and since I've done some research on it and happened to stumble upon one, I decided I may as well start now. It's going to be a slow road because I have high standards but I feel that if I'm building it, why not build it right the first time? So I'm going to go with full suspension Tubular K-Member, Control Arms, etc... I'm going to start sourcing parts soon. I may come up on a wrecked SS if I work my buddy good enough. It's Cammed, Stalled, and Sprayed with a built 4L60E. I wouldn't used the auto for this car but I will need one for my next project So it's going to be a long road but I just want it done right and to my tastes.


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