TPI TERR

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

used
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
06 GTO CAI
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

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1987 IROC lsx mn12 BLUE DEVIL
1983 Z28 lsx mn12 Z28fast1

TPI TERR

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

dust3r

I see your in So Cal... what are you going to do about emissions? Do you have EVAP, 4 o2s, smog pump, cats, etc?

TPI TERR

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

TPI TERR

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

TPI TERR

Catch can and

Present intake set up with shield


A clearance shot with with the stock k member. And moded/bent brake lines.

FirehawkSS

No one yet? Well I think it looks awesome. Keep up the posts and pics.

TPI TERR

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.

TPI TERR

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

Doc_G

WOW awesome job thus far, I have to tear my engine out and give it a once over, long story short I've either spun a bearing slung a rod or possibly blown headgasket and over heated doing god knows what type of damage. I will start to tear it out tomorrow after work, but I dont know how long it will be to inspect the engine, and might have to jump into the 350 build I have been thinking about.

Quick financial question for you terr, ball park about what do you have in your set up. I doubt that I'll emulate it at this point and time, but it'd be nice to see what a true "sho 'nuff" bad *** motor/tranny combo can be had for.

TPI TERR

The most time consuming part of the build process was wiring. Bit complicated but easy to accomplish with experience and patience.

All the schematics found online were printed out by my brother from esi, thirdgen.org and ls1tech. for his lsx conversion on his z28 and from that we accomplished another build.
http://www.thirdgen.org/techboard/lt...983-z28-h.html (My 1983 Z28 H.O. gets LS1/T56 transplant (Write up and pics.))

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






i dont have too many data scans. this is a quick overview of the build. i might leave some question unanswered but ill keep you guys updated once i gather up my info

cam-

Another schweeeet build by you guys. Well done!!

FirehawkSS

You are using the gto tranny correct? Did you have to modifiy the shifter location or did you set it back farther than normal? It looks like it lines up well with the center console.

TPI TERR

thanks guys.
i will be workin with oxygen sensors. and evap

soon enough i will try to do my own harnesses.. lol



i disassembled the gto shifter and dropped in a 4th gen pro 5.0
the gto shifter falls a bit back

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1987 IROC lsx mn12 BLUE DEVIL
1983 Z28 lsx mn12 Z28fast1

FirehawkSS

Did you exchange the gto shifter cup bushing with the firebird/camaro one or does the 5.0 shifter use the existing gto shifter cup bushing. This is the piece that requires you to remove a roll pin in order to replace. I guess that is what I was trying to ask.

Ramair21

how are you getting by emissions with L/T and no Air pump?

TPI TERR

the complete gto unit was over exaggerating that came off. the f body shifter sat in place.


as for emission its still in the process im barely getting to the exhaust work not sure where im headed towards.

007BALT

wow, nice. I must say im tempted by that Dash.

Nice job. Keep us posted on what you did on the emissions.

TPI TERR

the dash is actually pretty easy as you go. the wiring gets a bit complicated and the headlight switch has to be worked with . ill be working on the side pillars or a corner piece mold to fill in the gap.

__________________

1987 IROC lsx mn12 BLUE DEVIL
1983 Z28 lsx mn12 Z28fast1

ssean92

Realy nice build

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My Pics of the beast
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Lt1 383 All forged Splayed caps,complete 4th gen Swap, LS1 Brake UPGRADE done

a1990camarors

you my friend get a big gold sticker for the day! lmao! nice too see some useful diagrams on the dash wiring finally! im bout to do the swap myself this will save a whole lot time.

a1990camarors

one more question do you need the 4th gen tank to make the fuel gauge work properly? if so this would be my best time to do it i just finished up the rear suspension nothings even torqued yet so itd be super easy to drop it back down.

TPI TERR

yes im using the 4th gen plastic fuel tank.. 4th gen lines with a few mods. bends, shortened, compressor unions, good clamps and good fuel hoses.

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1987 IROC lsx mn12 BLUE DEVIL
1983 Z28 lsx mn12 Z28fast1

92RS(real slow)

looking sweet I love how you went with the camaro dash instead of the firebird setup most people opt for I've always admired your car great job

TPI TERR

by the looks of it im having some delays..
as soon as i get my ecu its goin to a muffler shop .. hopefully some one can fabricated some decent exhaust work till i get some hawks headers and a fabricated x member such as the drews.

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1987 IROC lsx mn12 BLUE DEVIL
1983 Z28 lsx mn12 Z28fast1

razor