my LSx 87 IROC build - - 5th Generation Camaro Enthusiasts
3rd Generation F-Body 1982-1992 Camaro & Firebird Discussion

LinkBack Thread Tools
post #1 of 39 Old 12-01-2008, 04:41 PM Thread Starter
Junior Member
Join Date: Dec 2008
Location: sgv
Posts: 17
my LSx 87 IROC build

this is my current build on my 87 iroc. been working on the car for about 5 years with the old tuned port set up but i decided to ditch all the maintnance and break downs and go with a lsx conversion with a 06 gto tranny that was adapted to my sbc. ditched the old school dash and went with a complete 02 dash and even got my FUEL gauge to work!!!

Engine was off 02 SS with 50k miles included
LS1 accessories power steering pump, TB, etc
New alternator
New seals
Port and polished TB

sent in oem harness to lt1wiring
Standalone extended Wiring harness and ECU
with basic tune

4th gen tank
modded feed return and evap
255 walbro fuel pump

06 GTO ls2 MN12 tranny and bell housing
06 GTO ls2 starter
LS7 clutch kit
New slave cylinder and master
Pro 5.0 short shifter

SPOHN LSx motor and tranny mounts
C5 valve covers

MSD wires
Catch can
Gatorback belts

Summit aluminum radiator
Stock dual fan set up

Steel braided fuel line and Adapter Fittings
Auto meter adapter fittings for oil pressure and temp
TB Cable Non-TCS

02 SS ebony dashboard
Fuse relay box for ignition and 12v source
Switch breaker bar for ignition power

some small suspension work form the past
Still running the 4th gen rear drive train
3:42s and alum. Driveshaft

my process went from dropping in the engine pacing it butmostly workin on the dash .. cluster and electrical.etc
the last part was the harness and whole lots hours sodering and wiring!!!!

to start off heres the car
MR.IROC is offline  
Sponsored Links
post #2 of 39 Old 12-01-2008, 04:42 PM Thread Starter
Junior Member
Join Date: Dec 2008
Location: sgv
Posts: 17

prepping the engine bay.

I started off by removing most of the wiring. Me and my brother have already experienced a ls1 swap in the past his his 3rd gen.

After hours of working on his car I gained a bit more experience and my set up was a bit more organized..

My engine was far gone I was ready to start prepping the engine bay for a better quality look.

My previous set up consisted of a cammed 350 mated with McLeod bell, mn12 GTO tranny and 4th gen rear differential

My intentions is to build a reliable 80s performance vehicle with the LSx drivability performance, yet fuel efficient, with modern interior and able to say I built this car.

I used esi data output for all the schematics for the 4th gen wiring.

Im attempting to run the evap and a fully functional cluster.

The process took a few months the only problem I came across was using a ls2 bell housing and finding the right starter. After researching the least expensive starter was the OEM Mitsubishi starter for lsx goats.

I purchased the ls1 with a k member and brake set up off ls1tech member.
As well as the fuel tank and dashboard.

Small appliances were supplied by the local parts store
All the fuel fittings and adapters were from others online or summit

Al work was done by myself with help of my close friends
And soon enough need some exhaust work for the y pipe

i started off with dissembling the old dash . Cutting grinding and bending metal for a test fit on the new dash .

Soon moved on to the 4th gen vents these fall right on top of the 3rd gen unit.. Modded and cut for future usage.

After painting the engine bay I left it plain and simple.

Main red wires to control ignition supply.

the instrumental work was done with extending wiring and merging the 4th gen cluster plug mostly color matched

MR.IROC is offline  
post #3 of 39 Old 12-01-2008, 04:45 PM Thread Starter
Junior Member
Join Date: Dec 2008
Location: sgv
Posts: 17

i used two power distrubution blocks. from the battery as the main 12v source and power with ignition.

before with tpi wiring

after with Spohn motor mounts in place.

using the ls7 clutch kit

Moved back to the engine and worked on the smaller components
Used autometer adaptor fitting for the individual gauges for my oil pressure and water temp. aside from the cluster .

Used a summit radiator and hoses from AutoZone to run the cooler routed back to the power steering pump unit fuel rail fittings and evap controls etc,

Here I used 90* swivel fittings from the local speed shop
As well as compressor fitting which I used to shorten the 4th gen fuel feed line
MR.IROC is offline  
post #4 of 39 Old 12-01-2008, 04:46 PM Thread Starter
Junior Member
Join Date: Dec 2008
Location: sgv
Posts: 17

Over view of the 4th gen fuel tank

I extended the wiring from the evap canister module, and the sending unit up to the dash .a whole lot of wiring.
Re worked on the quick disconnects and added fuel hose with some good clamps. These fuel lines were routed up by the rear area united to the fuel filter and hard lines to the front on the engine bay.

I used the walbro fuel pump a few mods. And this is what it looked like with a opening in the cargo area for easy access sealed up pretty good.

MR.IROC is offline  
post #5 of 39 Old 12-01-2008, 04:46 PM Thread Starter
Junior Member
Join Date: Dec 2008
Location: sgv
Posts: 17
Cut 2.5 inches off the filler neck to clear the fuel door

The sending unit harness extended sodered and united to the control plugs

Once I received my harness from lt1wiring . Couldn’t be easier.
Pictures below everything was test fit and included with the obd2 port, fan relay, fuel pump relay and extended 2.5 feet for easy installation

Just scaring u guys a bit.. jk a bit unorganized but wire loom can take care of this.

The rest of the wires on my cluster plug consisted off the signal off the harness vss, oil temp
MR.IROC is offline  
post #6 of 39 Old 12-01-2008, 04:54 PM
Veteran Member
Join Date: Feb 2008
Location: NY
Posts: 7,873
cool project...good luck with it!

2010-2SS/RS/LS3/IBM/RP6: ECS-Paxton Supercharger / American Racing Headers & Exhaust / PFADT Suspension / DSS 9" 4.10 Rear / FOR SALE!

Originally Posted by Taglane View Post
Powerfreak is the only one who actually understood anything.
POWERFREAK is offline  
post #7 of 39 Old 12-01-2008, 04:54 PM
Join Date: Jun 2007
Posts: 4,153
That's a great looking 3rd Gen you got there. Can't wait to see it all finished and wired up.
Devryn is offline  
post #8 of 39 Old 12-01-2008, 04:54 PM Thread Starter
Junior Member
Join Date: Dec 2008
Location: sgv
Posts: 17
Somewhere along routing the wiring for the fuel I got lost. My odometer turned on and a lot of unnecessary light were on.
Within time ill take care of that
Car cranked over yet has to be tuned
I will currently be working on my exhaust fabrication due to the fact that I am using stock manifolds. o2 sensor bongs in place and maybe work with a 4th gen y pipe that I have.,

Current pictures of my main cheerfulness. Fully functional gauges and soon to finish off the rest of the missing pieces

the dash is pretty much complete.. i need some exhaust work.. y pipe fabrication.. a re tune on the pcm.. and brackets for after market seats. ..
if anyone know of any?.. not too quiet expensive...

ill get some more pics vid up with time..
youll be able to find them here

1987 iroc BLUE DEVIL 5.7 mn12
83 z28fst1

Last edited by MR.IROC; 12-01-2008 at 05:33 PM.
MR.IROC is offline  
post #9 of 39 Old 12-01-2008, 09:29 PM
54inches's Avatar
Join Date: Dec 2006
Location: Dirty Bay, Texas
Posts: 8,984
Great work!!!!!!!!!!!!!!!!!

I had 4th gen seat in my 92.

They bolted right up!

Most GM seat will fit in that car, you just have to remove your brackets and install them on the other seats, but the 4th gens will bolt right in.

2005 CTSV BLACK LS7 Clutch/Flywheel/Slave, Tick Speed Bleeder, Tilton Clutch MC, RevShift Bushings, Domestic V8 Solutions (shifter, 8.8 Diff conversion, srut tower braces, sub-frame connectors), SLP cats, no cags, xpipe, bullet mufflers, Volante, iPod dock, G-force tune; 379hp 381tq.

Killing 5th gens like it is my job.
54inches is offline  
post #10 of 39 Old 12-01-2008, 09:35 PM
Veteran Member
80s_Adam's Avatar
Join Date: Dec 2007
Location: Pittsburgh & Texas
Posts: 4,203
Awesome thirdgen.

Last edited by 80s_Adam; 12-07-2009 at 09:09 PM.
80s_Adam is offline  
Sponsored Links

Quick Reply

Register Now

In order to be able to post messages on the - 5th Generation Camaro Enthusiasts forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Please enter a password for your user account. Note that passwords are case-sensitive.


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:


Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page

Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

For the best viewing experience please update your browser to Google Chrome