Third Gen Swap
Thread Starter
TECH Fanatic
Joined: Aug 2003
Posts: 1,049
Likes: 0
From: Newport News, Va
Third Gen Swap OK, Ive been thinking about swapping my '91 V6/A4 Firebird for an LS1/T56. Ive always been debating about this, and I have said I cant, but Im still gonna plan to do it.....Anyways, heres my parts list:
LS1
T56
Pilot Bushing
Flywheel
Clutch Disc
Pressure Plate
Release Bearing
Bellhousing W/Release fork
Hydraulic or manual release mechanism
Clutch/Brake pedal assembly
Conversion K-Member
Shifter
Manual Transmission Console
Shift Boot
T56 Crossmember
T56 Mount
Radiator
Cooling Fans
Motor Mounts
Fuel Pump
Fuel Lines
Cold Air
Wiring Harness
Throttle Linkage
Computer Programming
So what else am I missing? Also, whats the purpose of getting the POWER RACK AND PINION? Is this needed?
Thanks
LS1
T56
Pilot Bushing
Flywheel
Clutch Disc
Pressure Plate
Release Bearing
Bellhousing W/Release fork
Hydraulic or manual release mechanism
Clutch/Brake pedal assembly
Conversion K-Member
Shifter
Manual Transmission Console
Shift Boot
T56 Crossmember
T56 Mount
Radiator
Cooling Fans
Motor Mounts
Fuel Pump
Fuel Lines
Cold Air
Wiring Harness
Throttle Linkage
Computer Programming
So what else am I missing? Also, whats the purpose of getting the POWER RACK AND PINION? Is this needed?
Thanks
Thread Starter
TECH Fanatic
Joined: Aug 2003
Posts: 1,049
Likes: 0
From: Newport News, Va
Thanks, I knew about that stuff, but forgot to add them...I appreciate it though
ADD:
*PCM
*Exhaust(Probably 1 3/4 Jet Hots with X Pipe....ANYONE wanna reccomend some QUIET mufflers?)
Thanks
ADD:
*PCM
*Exhaust(Probably 1 3/4 Jet Hots with X Pipe....ANYONE wanna reccomend some QUIET mufflers?)
Thanks
Gotcha, then you might want to add a '98 Coolant Temp Sensor and connector to the list. Easy way to get temp info to your 3rd gen's dash gauge.
You'll need a tach signal conditioner. The LS1 PCM generates a 4cyl wave, which will read super-low on your dash tach. DakotaDigital.com has them.
Depending on the year of your 3rd gen, the speedo may be mechanical or electronic. If mechanical, do some research.
You'll need radiator hoses. Stock '01 1-piece upper hose, and '02 Silverado 5.3L lower hose, both hooked directly to my 3rd gen radiator. You'll need a way to connect the LS1's steam vent hose from the heads to your radiator. I reused my 3rd gen radiator's extra fitting (formerly the heater core return nipple) compliments of Speartech info...and yes I spent $ with Speartech on their bench burning harness.
And finally, if by "Wiring Harness" you mean a modded or aftermarket piece, there's still some integration with your 3rd gen chassis harness. Helms manual for the specific year of your car will have excellent diagrams.
You'll need a tach signal conditioner. The LS1 PCM generates a 4cyl wave, which will read super-low on your dash tach. DakotaDigital.com has them.
Depending on the year of your 3rd gen, the speedo may be mechanical or electronic. If mechanical, do some research.
You'll need radiator hoses. Stock '01 1-piece upper hose, and '02 Silverado 5.3L lower hose, both hooked directly to my 3rd gen radiator. You'll need a way to connect the LS1's steam vent hose from the heads to your radiator. I reused my 3rd gen radiator's extra fitting (formerly the heater core return nipple) compliments of Speartech info...and yes I spent $ with Speartech on their bench burning harness.
And finally, if by "Wiring Harness" you mean a modded or aftermarket piece, there's still some integration with your 3rd gen chassis harness. Helms manual for the specific year of your car will have excellent diagrams.
Thread Starter
TECH Fanatic
Joined: Aug 2003
Posts: 1,049
Likes: 0
From: Newport News, Va
Originally Posted by crainholio
Gotcha, then you might want to add a '98 Coolant Temp Sensor and connector to the list. Easy way to get temp info to your 3rd gen's dash gauge.
You'll need a tach signal conditioner. The LS1 PCM generates a 4cyl wave, which will read super-low on your dash tach. DakotaDigital.com has them.
Depending on the year of your 3rd gen, the speedo may be mechanical or electronic. If mechanical, do some research.
You'll need radiator hoses. Stock '01 1-piece upper hose, and '02 Silverado 5.3L lower hose, both hooked directly to my 3rd gen radiator. You'll need a way to connect the LS1's steam vent hose from the heads to your radiator. I reused my 3rd gen radiator's extra fitting (formerly the heater core return nipple) compliments of Speartech info...and yes I spent $ with Speartech on their bench burning harness.
And finally, if by "Wiring Harness" you mean a modded or aftermarket piece, there's still some integration with your 3rd gen chassis harness. Helms manual for the specific year of your car will have excellent diagrams.
You'll need a tach signal conditioner. The LS1 PCM generates a 4cyl wave, which will read super-low on your dash tach. DakotaDigital.com has them.
Depending on the year of your 3rd gen, the speedo may be mechanical or electronic. If mechanical, do some research.
You'll need radiator hoses. Stock '01 1-piece upper hose, and '02 Silverado 5.3L lower hose, both hooked directly to my 3rd gen radiator. You'll need a way to connect the LS1's steam vent hose from the heads to your radiator. I reused my 3rd gen radiator's extra fitting (formerly the heater core return nipple) compliments of Speartech info...and yes I spent $ with Speartech on their bench burning harness.
And finally, if by "Wiring Harness" you mean a modded or aftermarket piece, there's still some integration with your 3rd gen chassis harness. Helms manual for the specific year of your car will have excellent diagrams.
I'm just running a Modine stock replacement rad from Advance Auto for 1990 IROC with auto trans and A/C...$118 or so.
Even with a standalone harness you'll have a few hookups to your car's chassis harness. Fuel pump relay output to pump, 12VDC to the interior, coolant temp gauge, tach, speedo, oil pressure gauge.
Even with a standalone harness you'll have a few hookups to your car's chassis harness. Fuel pump relay output to pump, 12VDC to the interior, coolant temp gauge, tach, speedo, oil pressure gauge.
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TECH Enthusiast
Joined: Jun 2004
Posts: 544
Likes: 0
From: Itasca, IL
What are you doing about rear end? I think your stock rear end has open diff 2.73's or something like that. Thats what mine had and I think that with an LS1 attached to it wouldnt work to well...Personally I bought a 10 bolt off of a manual ls1 z28 for $200. It's 3.42 wit posi which is a hell of an upgrade from 2.73 open. I just bolted it in a couple nights ago, bolts in easy. And the passenger side coil packs need to be relocated because of the airbox as Ive heard.
I'm doin a similar thing right now, I got sick of running 17's in the quater mile wit my 305 TBI. So Im doing a whole LS1 drivetrain. As for a parts list...Things keep coming up as you go along, its hard to predict everything your going to need, at least in my experience.
I'm doin a similar thing right now, I got sick of running 17's in the quater mile wit my 305 TBI. So Im doing a whole LS1 drivetrain. As for a parts list...Things keep coming up as you go along, its hard to predict everything your going to need, at least in my experience.
Deranged Rat Fink
iTrader: (3)
Joined: Jun 2004
Posts: 4,495
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From: Right here at my laptop, DUH!
this is my project : www.geocities.com/badjuju342 just started to order the aftermarket stuff, Hawk's conversion K-member/ rear crossmember (ordered) , HPtuner's edit, Speartech harness. I have all the used parts i need for the swap and i'll be using an '87 IROC-Z rear disc brake posi unit with new 3.73 gears and new Ratech bearings ,seals, etc. for a lot of good usable info , www.thirdgen.org engine swap forums are hard to beat , lots of pics there , too.
Originally Posted by crainholio
Gotcha, then you might want to add a '98 Coolant Temp Sensor and connector to the list. Easy way to get temp info to your 3rd gen's dash gauge.
Thanks
Joined: Nov 2001
Posts: 1,707
Likes: 33
From: Anderson, Indiana
The 98 F-body is the only application that has a gauge sending unit that I am aware of.
__________________
91 Z28 LS2 408CI, LS9 Supercharger, LPE GT7 cam, Yank3000, 3450 raceweight.
Latest numbers: 9.71 ET, 141.42 MPH, 1.40 60' , 610 RWHP Mustang Dyno
www.speartech.com
91 Z28 LS2 408CI, LS9 Supercharger, LPE GT7 cam, Yank3000, 3450 raceweight.
Latest numbers: 9.71 ET, 141.42 MPH, 1.40 60' , 610 RWHP Mustang Dyno
www.speartech.com
hmmm, I guess i will look into that. I was wondering, and was going to find out for sure if the sending unit that all the LSx's are using have the same resistance to temp reading value that the third gen gauges are. I was thinking of just using another temp sensor(LSx so i dont have to drill and tap the head) in the passenger side. But i guess i will look into the resistance values and the 98 sensor deal. Thanks
Joined: Nov 2001
Posts: 1,707
Likes: 33
From: Anderson, Indiana
No other engines in the LS1 engine family use a gauge sending unit. You can NOT tap into the PCM coolant sensor to operate a gauge from! That signal is solely for the PCM.
All other LS1 based engines use serial data to operate the temp gauge, which is why they are so inaccurate.
The 98 LS1 is in the LSx engine family
, so wouldn't have to drill and tap anything.
All other LS1 based engines use serial data to operate the temp gauge, which is why they are so inaccurate.
The 98 LS1 is in the LSx engine family
, so wouldn't have to drill and tap anything.
__________________
91 Z28 LS2 408CI, LS9 Supercharger, LPE GT7 cam, Yank3000, 3450 raceweight.
Latest numbers: 9.71 ET, 141.42 MPH, 1.40 60' , 610 RWHP Mustang Dyno
www.speartech.com
91 Z28 LS2 408CI, LS9 Supercharger, LPE GT7 cam, Yank3000, 3450 raceweight.
Latest numbers: 9.71 ET, 141.42 MPH, 1.40 60' , 610 RWHP Mustang Dyno
www.speartech.com
