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07-22-2009, 03:45 AM
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#1
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Join Date: May 2009
Location: Detpford New Jersey
Posts: 204
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Converting 3.4 Firebird to a Lt1.
Well I think its about time to Post up me and my buddy's new Project. As of right now we are Converting His Sister 3.4 Firebird into a lt1. For a Birthday/Graduation Present. So far here is what we have done Pic's will be posted up later. Already have the motor in and bolted in just awaiting for the 4l60e to get back from the shop. There Really wasn't much to it. All we have to do is a little bit of electrical But here are some basics things we ran into.
We Bolted up a lt1 K-Frame because the lt1 motor mounts wont bolt up to a 3.4 K-frame.
We Put in a lt1 Fuel Pump and ran New Fuel Lines.
Put in lt1 Throttle Cable 3.4 TB Cable was too short.
Put In lt1 radiator.
The Rest Is just electrical.
Also I was wonder has anyone ever done this before ?
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07-22-2009, 08:16 AM
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#2
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Meet Coordinator
Join Date: Jan 2008
Location: brick/pt. pleasant beach
Posts: 19,342
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i was looking into doing it. what year is the donor car and what year is the lt1? you have to swap the dash harness and gauge cluster. may run into air bag issues too. i'm guessing you swapped the electric fans with the radiator?
Last edited by sweetbmxrider; 07-22-2009 at 08:16 AM.
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07-23-2009, 03:15 AM
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#3
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Join Date: May 2009
Location: Detpford New Jersey
Posts: 204
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Yea were actually going for a sleeper look were keeping the same cluster. And theyre both 95's obd1. And yes we swapped out the fans with the radiator.
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07-23-2009, 08:04 AM
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#4
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Meet Coordinator
Join Date: Jan 2008
Location: brick/pt. pleasant beach
Posts: 19,342
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i don't think the gauge cluster actually works with the lt1 sensors. you could grab a 110 speedo i guess but i think thats a little silly. let me know how it all goes. considering doing it to my 95's, its the easiest ones to swap.
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07-23-2009, 01:45 PM
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#5
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Stalker
Join Date: Aug 2004
Posts: 12,078
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i put a 96 LT1 in my '79 corvette...
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07-23-2009, 08:11 PM
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#6
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Join Date: Jun 2009
Posts: 38
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as far as i know you need to change the dash harness gauge cluster and obd1 plug....it's all connected. Had to do it in my car that way.
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07-25-2009, 04:29 PM
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#7
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Join Date: Sep 2008
Location: Cape Coral, FL
Posts: 401
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oh no!! LT1=optisuck bringing back bad memoriesssssss
__________________
1:11am Kasey
buy me a maserati
1:12am Chrissi
if u gimme the money to buy u one sure
1:12am Kasey
what about the goodness of your heart?
1:13amChrissi
kasey. i have no heart.
Last edited by Fire_Chicken92; 07-25-2009 at 04:30 PM.
Reason: typo
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07-25-2009, 05:53 PM
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#8
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2007 Member of the Year
Join Date: Oct 2004
Location: Seabrook, TX
Posts: 14,281
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Cluster won't work, and the entire wiring harness probably needs to be swapped... don't forget about front springs/struts. May want to do a brake upgrade as well, especially if the car has drums in the back
Do you have a donor LT1 car? makes things easier
Quote:
Originally Posted by SmokingSS
i put a 96 LT1 in my '79 corvette...
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please. that thing will never run lol
__________________
WF=DF
Kommandant of the ACL (Anti Canadian League)
Quote:
Originally Posted by LTb1ow
Junk the pos, spend the money on beer, acquire headache.
Same result cept this headache doesnt last months.
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07-27-2009, 03:44 AM
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#9
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Join Date: May 2009
Location: Detpford New Jersey
Posts: 204
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Quote:
Originally Posted by Savage_Messiah
Cluster won't work, and the entire wiring harness probably needs to be swapped... don't forget about front springs/struts. May want to do a brake upgrade as well, especially if the car has drums in the back
Do you have a donor LT1 car? makes things easier
please. that thing will never run lol
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Acutally had to put up a lt1 subframe so the springs and struts are all good. And no durms in the back. And original cluster works  . And yes Optisparks still blow. Actually wired her up today and fired her up. SHE runs. But unfortunately cant drive here we need a lt1 throttle cable.
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07-27-2009, 10:16 AM
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#10
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Join Date: Sep 2006
Location: north jersey
Posts: 1,680
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should have ditched the opti and went with coil packs  im looking into that when i do my motor, it will cost more to do it but alt least you're bulletproof
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07-27-2009, 11:58 AM
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#11
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Meet Coordinator
Join Date: Jan 2008
Location: brick/pt. pleasant beach
Posts: 19,342
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yeah transmaro93 is doing that with his now. its really nice but i like the fact that i can distort the rotor going well above 5k 
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07-27-2009, 12:07 PM
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#12
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Mongo the Meet Coordinator
Join Date: May 2008
Posts: 16,900
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I fail to understand the hate of optisparks. Mine works fine... lives its life above 6k...
__________________
Quote:
Originally Posted by KirkEvil
repo bigals turd gen and part it out to a loving home
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07-27-2009, 01:30 PM
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#13
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Banned
Join Date: Jul 2008
Location: Long Branch, NJ
Posts: 805
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camaros are never sleepers lol. even if its a v6 model...now a galant vr4 or a AE86 Corolla is a true sleeper
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07-27-2009, 05:14 PM
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#14
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2007 Member of the Year
Join Date: Oct 2004
Location: Seabrook, TX
Posts: 14,281
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Quote:
Originally Posted by ShowNoPromise
I fail to understand the hate of optisparks. Mine works fine... lives its life above 6k...
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I'll be awaiting your "damnit my opti died" thread now
__________________
WF=DF
Kommandant of the ACL (Anti Canadian League)
Quote:
Originally Posted by LTb1ow
Junk the pos, spend the money on beer, acquire headache.
Same result cept this headache doesnt last months.
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07-31-2009, 10:37 AM
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#15
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Banned
Join Date: Dec 2007
Posts: 1,106
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Quote:
Originally Posted by ShowNoPromise
I fail to understand the hate of optisparks. Mine works fine... lives its life above 6k...
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they are fine when they run,but swapping them out every couple of months is a pain in the ass..
Just avoid driving in the rain the snow and any puddles and your should last until it decides to /wrists.
Plus changing them inside the engine bay is a hassle I look forward to never performing that again.
Last edited by Saitin; 07-31-2009 at 10:45 AM.
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07-31-2009, 10:39 AM
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#16
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Mongo the Meet Coordinator
Join Date: May 2008
Posts: 16,900
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Quote:
Originally Posted by Saitin
they are fine when they run,but swapping them out every couple of months is a pain in the ass..
Just avoid driving in the rain the snow and any puddles and your should last until it decides to /wrists.
Plus changing them inside the engine bay is a hassle I look forward to never performing again.
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Again, what?
Mine lasted a long wet winter, and close to a year and a half now... just a GM replacement cause I had the STOCK one off...
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07-31-2009, 10:45 AM
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#17
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Banned
Join Date: Dec 2007
Posts: 1,106
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Quote:
Originally Posted by ShowNoPromise
Again, what?
Mine lasted a long wet winter, and close to a year and a half now... just a GM replacement cause I had the STOCK one off...
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Nice, I guess I'm just unlucky I went through 4 in less than 3 months when I had it.The guy I sold it to 8 months back says he hasn't had a single problem with it hahaha.
Last edited by Saitin; 07-31-2009 at 10:46 AM.
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07-31-2009, 11:20 AM
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#18
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Meet Coordinator
Join Date: Jan 2008
Location: brick/pt. pleasant beach
Posts: 19,342
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sounds like user failure to me
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07-31-2009, 01:18 PM
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#19
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Banned
Join Date: Dec 2007
Posts: 1,106
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Quote:
Originally Posted by sweetbmxrider
sounds like user failure to me
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haha good one, pamper-z installed one himself and it died a few weeks later brand new.
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07-31-2009, 01:34 PM
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#20
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Meet Coordinator
Join Date: Jan 2008
Location: brick/pt. pleasant beach
Posts: 19,342
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you said you did 4 in 3 months, i dono just doesn't make sense to me.
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08-01-2009, 05:06 PM
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#21
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Banned
Join Date: Dec 2007
Posts: 1,106
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Quote:
Originally Posted by sweetbmxrider
you said you did 4 in 3 months, i dono just doesn't make sense to me.
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Yep he did number 2
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