jayweasel

So yah pretty much just as the title says! I have a 95 formula with 160,000 miles on it and pretty much the motor is done on it! I would like to do the conversion to the LS1. The way i understand it, is its better too have a whole LS1 car, so that everything can be swapped. Also a K-member is need, thats pretty much straight foward the only problem i see in it all is wiring it all up together. I've read some where you can get a Painless wiring harness too make it all easy, but what does something like that go for? Another thing with the K-member can you still use the factory control arms? Just for cost purposes and plus mine are already new on the car..lol! I really wanna do the swap, putting the LT1 back in it isn't really worth the time and money. Any helpful hints or suggestions would be greatly appreciated.

blahster

iTrader: (25)

the wiring harness will run you around 500-ish from speartech....

however, if you follow my little...guide...you should have all the info there that you need...

http://blackshadowz.cz28.com/LS1EngineSwap.htm

good luck.

Iwantamaro

cool write up dude

the_merv

iTrader: (88)

the Harness is not too bad to do, this is what I did to it..

MODIFICATIONS TO LS1 HARNESS

Re-located Starter wire to under dash
Re-located Fuel Pump Relay, Tach signal to under dash
Spliced into PCM Red 15 for Alternator gauge signal
Spliced into PCM Blue 80 for Coolant Temp Gauge ground, put in extra connector for Temp Sensor on passenger side, ran signal wire to Gauge
Removed AIR, EGR, AC, EVAP, Cruise Control, Rear Oxygen Sensors, Fuel Level Input, Fuel Pressure, Fuel Sensor Return/Sender Ground, Low Coolant wires
Modified C-100, Pin C into Ground wire on Car, located on Wheel Well
Moved C-105, Pin B to C-100, Pin K on Harness and on Car, took out C-105 Connector
Re-wired Cooling Fans to constant run, spliced Brown power out on Fuse into Cooling Fan Relay wires(Blue & Green), C-100 Pins H, J now hot with Fuse #6
Wired in 85mm MAF Connector inplace of regular MAF Connector and Air Temp Sensor
Wired in second Temp Sensor Connector, spliced into Ground Wire from PCM, ran Signal Wire to Temp Gauge
Re-located MAP Sensor Connector near #2 Injector Connector
Wired in LS2 Fuel Injector Connectors

LS1 CONVERSION HARNESS PINOUTS

C-100 CONNECTOR LOCATED ON WHEEL WELL
A Pink Power feed from Injector Fuse #9
C Dk Green PCM Ground placed on Wheel Well
D Orange Power from PCM fuse #8 to PCM
F Brown Power feed from Fuse #6, MAF/02'S
G Pink Power feed from Ignition Fuse #11
H Dk Blue Power feed from Fuse #6, Tranny/EGR
J Dk Green Power feed from Fuse #6, Extra Hot
K Pink Power feed from Injector Fuse #10

C-210 CONNECTOR LOCATED UNDER DASH
A Purple Theft Deterrent Relay to Starter Solenoid
B Black/White Ground feed to Fuel Pump Relay

C-220 CONNECTOR
A Red Voltmeter Gauge
B Tan Oil Pressure Gauge
G Dk Green/White Vehicle Speed signal to Speedometer
J Dk Green/White Fuel Pump Relay control
K Dk Green Coolant temperature Gauge

C-230 CONNECTOR
B Brown/White SES Light
D White Tachometer signal to Gauge
E Dk Blue Theft deterrent-fuel enable
G Pink Power feed from PCM Ignition Fuse #5
H Lt Blue/Black TCC switched power feed
J Orange/Black Park/neutral feed from transmission position switch (V8 VIN P only)
K Purple Serial Data wire off of Data Link


DATA LINK CONNECTOR LOCATED UNDER DASH NEAR STEERING COLUMN

LS1 F-BODY
2 Purple Serial Data wire to C-230 Connector
4 Black/White Ground
5 Black/White Ground
16 Orange Positive Power