My LS3 Swap
Thread Starter
Member
iTrader: (2)
Joined: Oct 2008
Posts: 154
Likes: 0
From: fresno ca
Car: 89 IROC-Z
Engine: 6.2 LS3
Transmission: MN12 T56 GTO
Axle/Gears: 3.73
Re: My LS3 Swap
ive search online, and found no answer so here it goes..
my questions can i get a t56 to bolt up to the ls3?
if so can i use the ls7 clutch kit?
ive heard i need a ls1 pilot bearing..
can i use the ls3 flywheel or does it nees to be a ls2?
will my mini starter still work from summit racing SUM-820320 ?
will this stater even work with a ls3?
any other suggestions/input would be greatly appericiatted
my questions can i get a t56 to bolt up to the ls3?
if so can i use the ls7 clutch kit?
ive heard i need a ls1 pilot bearing..
can i use the ls3 flywheel or does it nees to be a ls2?
will my mini starter still work from summit racing SUM-820320 ?
will this stater even work with a ls3?
any other suggestions/input would be greatly appericiatted
Member
Joined: Nov 2001
Posts: 482
Likes: 2
From: Midvale, UT
Car: 1991 RS
Engine: L03
Transmission: T5
Axle/Gears: 4.11
Re: My LS3 Swap
As far as I am aware, the transmission connectivity is the same between all GEN III V-8's with the exception of the Iron Head 6.0's which have a longer crank snout. Since your LS3 doesn't have this problem, it should be able to use the LS7 clutch kit as you are thinking. You can use the LS1 Pilot bearing, but I've also heard of others like Ghettocruiser using a pilot bushing, I believe he requested one from a 1969 Camaro even, but he'll have to verify that. I can certainly see the advantage of using a pilot pushing over a bearing, and that is: Strength. The flywheel should be the same from what I understand.
Not sure on the starter, if it is for Gen III GM V8, I'd imagine it would work. Nearly all parts are interchangeable between the engines, though there are some intake differences, for example: LS3/L92 style intakes will not work properly with LS1-LS2-LQ4-LM7-LQ9 etc heads.
Not sure on the starter, if it is for Gen III GM V8, I'd imagine it would work. Nearly all parts are interchangeable between the engines, though there are some intake differences, for example: LS3/L92 style intakes will not work properly with LS1-LS2-LQ4-LM7-LQ9 etc heads.
Senior Member
Joined: Feb 2010
Posts: 1,125
Likes: 1
From: San Diego, California
Car: Trailblazer EXT 4.2 (Firebird Form)
Engine: 5.1 4bbl
Transmission: 700R4 Mega Raptor Level 4
Axle/Gears: 2.73
Re: My LS3 Swap
I support this swap, emotionally not financially, lol... people out of the state of california need to realize that our ba**s are in a vice by the smog ***** of the EPA ... there are many factors and scenarios one must take into account when planning out an engine swap.... the LS1 with a T56 is going for about 3K or so, that's if you're lucky I would imagine, but what happens if you drop it in and bam engine is shot, you're looking roughly at around 3K for a rebuild, even more if you have shop do all of your work.. then comes the harness, speartech lists them at around 1K, then comes the smog equipment, as far as I know they're pricey... the LS3 crate alone runs 6100 dollars .. the LS3 Erod package runs 7600... if you ask me, my opinion is you get peace of mind and a kick *** engine as well as the relaxing biannual trips to the smog station, rather than the scare sh**less trips of whether it is or isn't going to pass the good ol' sniffer test...
Senior Member
iTrader: (3)
Joined: Aug 2006
Posts: 559
Likes: 3
From: washington
Car: 88 Trans am GTA
Engine: 2002 Ls1
Transmission: t-56
Axle/Gears: Ford 9" 4.11 gears w/ locker
Re: My LS3 Swap
After months of debating whether to rebuild the old tpi, or to get my dream motor (any ls motor but the LS9 would be badass). I figured well ill be a wicked 383TPI and have tons of toqure, but with the greatly popurlar ls swap (and growing) i figured nows the time to do it and stop talking about it. ive been wanting this motor, just kept talking myself outta it because of the about of money required to do it.
Whats wrong with the ls9?
Senior Member
Joined: Feb 2010
Posts: 1,125
Likes: 1
From: San Diego, California
Car: Trailblazer EXT 4.2 (Firebird Form)
Engine: 5.1 4bbl
Transmission: 700R4 Mega Raptor Level 4
Axle/Gears: 2.73
Senior Member
iTrader: (3)
Joined: Aug 2006
Posts: 559
Likes: 3
From: washington
Car: 88 Trans am GTA
Engine: 2002 Ls1
Transmission: t-56
Axle/Gears: Ford 9" 4.11 gears w/ locker
Senior Member
Joined: Feb 2010
Posts: 1,125
Likes: 1
From: San Diego, California
Car: Trailblazer EXT 4.2 (Firebird Form)
Engine: 5.1 4bbl
Transmission: 700R4 Mega Raptor Level 4
Axle/Gears: 2.73
Re: My LS3 Swap
enjoy!!!
http://www.crateenginedepot.com/stor...P2382C509.aspx
btw, GMPP has released or is in the process of releasing the LS9 standalone S/C kit for a rough price tag of about 6500 or so ... it is also listed on this website link...
http://www.crateenginedepot.com/stor...P9083C122.aspx
Senior Member
Joined: Feb 2010
Posts: 1,125
Likes: 1
From: San Diego, California
Car: Trailblazer EXT 4.2 (Firebird Form)
Engine: 5.1 4bbl
Transmission: 700R4 Mega Raptor Level 4
Axle/Gears: 2.73
Re: My LS3 Swap
I have and XLSX file going and am at a rough estimate of about $18,000 for my LS3 Erod + T-56 Viper Internals with other uni-body bolt-ons and exhaust stuff
LS3 E-Rod**** T-56 Viper****LS7 Clutch****K-Member *****12 Bolt Moser Rear End 3.73***** LS1 Gas Tank ****Fuel Pump ****Willwood Brakes ****3" Exhaust Cat Back (LM2)****Front End Suspension**** Drive Shaft Loop**** Wonder Bar**** Torque Arm ****T-56 Cross Member****Subframe Connectors**** LCA **** Panhard Bar**** Sway Bar Set ****
toyo tq 275/45/16
LS3 E-Rod**** T-56 Viper****LS7 Clutch****K-Member *****12 Bolt Moser Rear End 3.73***** LS1 Gas Tank ****Fuel Pump ****Willwood Brakes ****3" Exhaust Cat Back (LM2)****Front End Suspension**** Drive Shaft Loop**** Wonder Bar**** Torque Arm ****T-56 Cross Member****Subframe Connectors**** LCA **** Panhard Bar**** Sway Bar Set ****
toyo tq 275/45/16
Last edited by KNBlazer; Oct 28, 2010 at 04:13 AM.
Senior Member
iTrader: (3)
Joined: Aug 2006
Posts: 559
Likes: 3
From: washington
Car: 88 Trans am GTA
Engine: 2002 Ls1
Transmission: t-56
Axle/Gears: Ford 9" 4.11 gears w/ locker
Re: My LS3 Swap
enjoy!!!
http://www.crateenginedepot.com/stor...P2382C509.aspx
btw, GMPP has released or is in the process of releasing the LS9 standalone S/C kit for a rough price tag of about 6500 or so ... it is also listed on this website link...
http://www.crateenginedepot.com/stor...P9083C122.aspx
http://www.crateenginedepot.com/stor...P2382C509.aspx
btw, GMPP has released or is in the process of releasing the LS9 standalone S/C kit for a rough price tag of about 6500 or so ... it is also listed on this website link...
http://www.crateenginedepot.com/stor...P9083C122.aspx
check out this company
www.speartech.com
go to the company projects, in phase 3 they put an ls9 supercharger on a gen III/IV motor and its in a 91 z28.
if you check phase 2, that is the exact build up im doing.
here is the thread on ls1tech. if you skip to the last page there are videos of the car on the dyno and at the track!!!
Last edited by firechicken76; Oct 28, 2010 at 11:35 PM.
Thread Starter
Member
iTrader: (2)
Joined: Oct 2008
Posts: 154
Likes: 0
From: fresno ca
Car: 89 IROC-Z
Engine: 6.2 LS3
Transmission: MN12 T56 GTO
Axle/Gears: 3.73
Senior Member
Joined: Feb 2010
Posts: 1,125
Likes: 1
From: San Diego, California
Car: Trailblazer EXT 4.2 (Firebird Form)
Engine: 5.1 4bbl
Transmission: 700R4 Mega Raptor Level 4
Axle/Gears: 2.73
Re: My LS3 Swap
when you mount the CATS could you post up some pics, please... I am in the development phase of trying to gather as much info as possible... I have plans of going with true dual exhaust either using hushpower or LM2, I was thinking of the Spiral by Moroso, but I think they may be too loud... also what crossmember are you going with? are you doing a custom job?
Re: My LS3 Swap
btw, GMPP has released or is in the process of releasing the LS9 standalone S/C kit for a rough price tag of about 6500 or so ... it is also listed on this website link...
Thread Starter
Member
iTrader: (2)
Joined: Oct 2008
Posts: 154
Likes: 0
From: fresno ca
Car: 89 IROC-Z
Engine: 6.2 LS3
Transmission: MN12 T56 GTO
Axle/Gears: 3.73
Re: My LS3 Swap
when you mount the CATS could you post up some pics, please... I am in the development phase of trying to gather as much info as possible... I have plans of going with true dual exhaust either using hushpower or LM2, I was thinking of the Spiral by Moroso, but I think they may be too loud... also what crossmember are you going with? are you doing a custom job?
any one on the pedals?
Senior Member
iTrader: (1)
Joined: Nov 2002
Posts: 889
Likes: 0
From: Kansas City
Car: 1991 Trans Am
Engine: L98
Transmission: T56
Re: My LS3 Swap
LS9 also gets forged internals and oil squirters and such that make it quite a bit better than even a forged ls3 with the same blower on top. Not worth 22k by any means tho..
Thread Starter
Member
iTrader: (2)
Joined: Oct 2008
Posts: 154
Likes: 0
From: fresno ca
Car: 89 IROC-Z
Engine: 6.2 LS3
Transmission: MN12 T56 GTO
Axle/Gears: 3.73
Re: My LS3 Swap
update
after a long over do wait i finally got my trans it took a while to locate and a lil for delivery about a month.
the trans - 2006 pontiac gto t56 m12. pics coming soon.
Thread Starter
Member
iTrader: (2)
Joined: Oct 2008
Posts: 154
Likes: 0
From: fresno ca
Car: 89 IROC-Z
Engine: 6.2 LS3
Transmission: MN12 T56 GTO
Axle/Gears: 3.73
Re: My LS3 Swap
yeah the origanal idea was the 700r4 because of money but i managed to get it the hard part was finding the damn thing here in california(idk about any where else) but the didnt want to sell it with out a core(for the most part) or the core charge was 750! but it helps knowing people.. it came with bellhousing, shifter and even the rubber mount and the slave clyinder.
Thread Starter
Member
iTrader: (2)
Joined: Oct 2008
Posts: 154
Likes: 0
From: fresno ca
Car: 89 IROC-Z
Engine: 6.2 LS3
Transmission: MN12 T56 GTO
Axle/Gears: 3.73
Re: My LS3 Swap
are the 98-02 camaro v6 and v8 pedal the same?
order a new shifter the mgw and the cup for the trans so i can use the f-body shifter(not in pic).
order a new shifter the mgw and the cup for the trans so i can use the f-body shifter(not in pic).
On Probation
iTrader: (9)
Joined: Feb 2005
Posts: 2,042
Likes: 2
From: So Cal
Car: 87 IROC-Z
Engine: LsX
Transmission: MN12 6speed
Axle/Gears: 3:42
Re: My LS3 Swap
nice.. did u get a hold of the fbody shifter cup or are you ganna use the gto shifter assembly?? and im assuming ur ganna locate a gto starter?? theyre kinda hard to locate.. it took me a while to locate mine
Thread Starter
Member
iTrader: (2)
Joined: Oct 2008
Posts: 154
Likes: 0
From: fresno ca
Car: 89 IROC-Z
Engine: 6.2 LS3
Transmission: MN12 T56 GTO
Axle/Gears: 3.73
Re: My LS3 Swap
the shifter cup i did order and the mgw short shift. i ordered the mgw cuz i read alot of good things from ls1 tech about it and figured id give it a try, and the customer service was great it should be shipping out on 12/06 i order it on friday. a link to the shifter
http://www.mgwltd.com/camaro_short_throw_shifter.shtml
as far as the bellhousing i going to use it and the starter hopfully i can get a mini starter from summit or something . have u came across a mini starter that might work tpi terr? why is everthing for the gto so damn hard too find, is it bcuz thier not making the ls2 anymore?
Re: My LS3 Swap
V6/V8 pedals are the same, read over the picture explosion thread before you go for a 4th gen set. 3rd gen pedals fit better and only require moving the peg over
Thread Starter
Member
iTrader: (2)
Joined: Oct 2008
Posts: 154
Likes: 0
From: fresno ca
Car: 89 IROC-Z
Engine: 6.2 LS3
Transmission: MN12 T56 GTO
Axle/Gears: 3.73
Re: My LS3 Swap
the ls1 water pump the neck were the hose connects is more on the passenger side and the ls3 in located more on the driver side so do i need a different top hose(shorter)
and TIMMYBOY did u use a different bottom hose?
Up rad hose #: Gates 20893 Lower rad hose #: Gates 21505
and TIMMYBOY did u use a different bottom hose?
Up rad hose #: Gates 20893 Lower rad hose #: Gates 21505
Supreme Member
iTrader: (1)
Joined: Feb 2005
Posts: 2,642
Likes: 2
From: Pleasant Grove, Utah
Car: 1993 GMC Typhoon
Engine: 4.3 Turbo
Transmission: 4L60
Axle/Gears: 3.42
Re: My LS3 Swap
in reference to your "pedals" questions...
the LS3 is drive by wire... all 98-02 camaros are cable driven throttle bodies..
if you plan on keeping the drive by wire..you are going to need a set of pedals that are for drive by wire..
or do it the easy way and just get a cable drive throttle body and save yourself a huge headache..
the LS3 is drive by wire... all 98-02 camaros are cable driven throttle bodies..
if you plan on keeping the drive by wire..you are going to need a set of pedals that are for drive by wire..
or do it the easy way and just get a cable drive throttle body and save yourself a huge headache..
Re: My LS3 Swap
in reference to your "pedals" questions...
the LS3 is drive by wire... all 98-02 camaros are cable driven throttle bodies..
if you plan on keeping the drive by wire..you are going to need a set of pedals that are for drive by wire..
or do it the easy way and just get a cable drive throttle body and save yourself a huge headache..
the LS3 is drive by wire... all 98-02 camaros are cable driven throttle bodies..
if you plan on keeping the drive by wire..you are going to need a set of pedals that are for drive by wire..
or do it the easy way and just get a cable drive throttle body and save yourself a huge headache..
Supreme Member
iTrader: (1)
Joined: Feb 2005
Posts: 2,642
Likes: 2
From: Pleasant Grove, Utah
Car: 1993 GMC Typhoon
Engine: 4.3 Turbo
Transmission: 4L60
Axle/Gears: 3.42
Re: My LS3 Swap
the block is a stronger alloy as well, i was reading about the LS9 block in GM hightech... the LSA is the basic LS3 6.2 block with the same charger.. which is why they only push 556hp through it, instead of the 620hp LS9..
Thread Starter
Member
iTrader: (2)
Joined: Oct 2008
Posts: 154
Likes: 0
From: fresno ca
Car: 89 IROC-Z
Engine: 6.2 LS3
Transmission: MN12 T56 GTO
Axle/Gears: 3.73
Re: My LS3 Swap
The lsa,3,9 are all 6.2 in size but the lsa an ls9 have super charger they all have a different camshaft. The ls3 lift 551/522 durtion 204/211 the lsa lift 492/480 duration 198/216 and the ls9 lift 562/558 duration 211/230.
Thread Starter
Member
iTrader: (2)
Joined: Oct 2008
Posts: 154
Likes: 0
From: fresno ca
Car: 89 IROC-Z
Engine: 6.2 LS3
Transmission: MN12 T56 GTO
Axle/Gears: 3.73
Re: My LS3 Swap
the ls1 water pump the neck were the hose connects is more on the passenger side and the ls3 in located more on the driver side so do i need a different top hose(shorter)
and TIMMYBOY did u use a different bottom hose?
Up rad hose #: Gates 20893 Lower rad hose #: Gates 21505
and TIMMYBOY did u use a different bottom hose?
Up rad hose #: Gates 20893 Lower rad hose #: Gates 21505
Re: My LS3 Swap
i used a fourth Gen lower hose. I did not like the f250 hose at all. The fourth Gen hose requires some die electric grease and muscle to get on but is a much cleaner looking install. I did not want to use worm clamps which is why I didn't use the 250 hose.
Senior Member
iTrader: (1)
Joined: Nov 2002
Posts: 889
Likes: 0
From: Kansas City
Car: 1991 Trans Am
Engine: L98
Transmission: T56
Re: My LS3 Swap
I thought the LS9 got the TVS2300 while the LSA got the TVS1900? I didn't know the LSA block was just the LS3 (not that it matters, it has been pushed to over 1500 anyway).
Thread Starter
Member
iTrader: (2)
Joined: Oct 2008
Posts: 154
Likes: 0
From: fresno ca
Car: 89 IROC-Z
Engine: 6.2 LS3
Transmission: MN12 T56 GTO
Axle/Gears: 3.73
Re: My LS3 Swap
finally getting some where just had to wait for some parts to come in.
the tran and ls7 clutch kit installed little dirty under there the old tpi had a oil seal leak will get it cleaned up when trans comes back out =)
i used an older style tranny mount not the gto one.
the tran and ls7 clutch kit installed little dirty under there the old tpi had a oil seal leak will get it cleaned up when trans comes back out =)
i used an older style tranny mount not the gto one.
Last edited by JSACRA; Mar 19, 2011 at 06:42 PM.
Thread Starter
Member
iTrader: (2)
Joined: Oct 2008
Posts: 154
Likes: 0
From: fresno ca
Car: 89 IROC-Z
Engine: 6.2 LS3
Transmission: MN12 T56 GTO
Axle/Gears: 3.73
Joined: Sep 2005
Posts: 6,258
Likes: 6
From: O'Fallon, MO
Car: 1991 Z28 convertible built 3/1/1990
Engine: Cammed 6.0L LSX
Transmission: T56
Axle/Gears: custom Ford 8.8", 4.10 gears
Re: My LS3 Swap
I'd install a Tick Performance speed bleeder if I were you (and if you haven't already). It makes bleeding the clutch much easier and you can do it by yourself in about 2 minutes start to finish.
Member
iTrader: (4)
Joined: Jun 2005
Posts: 238
Likes: 0
From: Long Beach Cali
Car: 68,87,99 maros, 07 tbss
Engine: TPI,LS2,LSA,L92
Transmission: T56,T56,T56, 4L80E
Axle/Gears: 12bolts and 14 bolt lol
Re: My LS3 Swap
awesome job, I should have listened to my gut feeling and done an LS swap
COTM Editor




Joined: Oct 2008
Posts: 1,365
Likes: 216
From: PA
Car: 91/89/85/82 Z28s, 88 TA, 88/88 SC
Engine: SBC and LS variations
Re: My LS3 Swap
The tick performance speed bleeder is a great thing... i would definitely go this route, it will save you a lot of time and headaches when you 1st bleed your system and then thereafter when you change the fluid
On Probation
iTrader: (9)
Joined: Feb 2005
Posts: 2,042
Likes: 2
From: So Cal
Car: 87 IROC-Z
Engine: LsX
Transmission: MN12 6speed
Axle/Gears: 3:42
Re: My LS3 Swap
speed bleeders will save a lot of time while working on the clutch system . i saw that you cut your k member any pics on that?
Thread Starter
Member
iTrader: (2)
Joined: Oct 2008
Posts: 154
Likes: 0
From: fresno ca
Car: 89 IROC-Z
Engine: 6.2 LS3
Transmission: MN12 T56 GTO
Axle/Gears: 3.73
Re: My LS3 Swap
not at the moment when the motor comes out to weld it i will take some. i cut it for clearance for the oil pan and dont have the money for the tubular k-member. i didnt want to buy just the k-member and waste money and have to buy one later, my plan was to go with the coil over set-up and at 1400 bucks i just dont have it now. so i didnt want to buy one for the stock set-up and later have to buy another.
Joined: Sep 2005
Posts: 6,258
Likes: 6
From: O'Fallon, MO
Car: 1991 Z28 convertible built 3/1/1990
Engine: Cammed 6.0L LSX
Transmission: T56
Axle/Gears: custom Ford 8.8", 4.10 gears
Re: My LS3 Swap
I know with spohn's k member you can use either the stock spring pocket a-arms or their coilover a-arms depending on which suspension you use, the k member itself is the same though.
Also, if you search under my username for "pedals" or "peg" you'll find a thread I made on making the third gen pedals work with the master cylinder rod, it's an easy and cheap fix.
Also, if you search under my username for "pedals" or "peg" you'll find a thread I made on making the third gen pedals work with the master cylinder rod, it's an easy and cheap fix.
Thread Starter
Member
iTrader: (2)
Joined: Oct 2008
Posts: 154
Likes: 0
From: fresno ca
Car: 89 IROC-Z
Engine: 6.2 LS3
Transmission: MN12 T56 GTO
Axle/Gears: 3.73
Re: My LS3 Swap
I know with spohn's k member you can use either the stock spring pocket a-arms or their coilover a-arms depending on which suspension you use, the k member itself is the same though.
Also, if you search under my username for "pedals" or "peg" you'll find a thread I made on making the third gen pedals work with the master cylinder rod, it's an easy and cheap fix.
Also, if you search under my username for "pedals" or "peg" you'll find a thread I made on making the third gen pedals work with the master cylinder rod, it's an easy and cheap fix.

thanks for the input on the pedals really apperciate it

but i know the spohn k-member is stock or coil over but i didnt want to buy one for the stock set up and later buy another for the coil over so i just cut it, call it practice i guess. plus the money is not there right now i can always do it later.
Thread Starter
Member
iTrader: (2)
Joined: Oct 2008
Posts: 154
Likes: 0
From: fresno ca
Car: 89 IROC-Z
Engine: 6.2 LS3
Transmission: MN12 T56 GTO
Axle/Gears: 3.73
Re: My LS3 Swap
what did u guys do for the stock gauge to make them work
the speedo -i need cable x box that hawks sell
volts - be easy
but the rest is were im kinda stuck at and i wanna keep the stock guages, ive search but still a lil confused
the speedo -i need cable x box that hawks sell
volts - be easy
but the rest is were im kinda stuck at and i wanna keep the stock guages, ive search but still a lil confused




