efi connection lt1 question.
If that was the case everybody would be doing this swap and it wouldnt cost $850 for a custom harness. Its a completely different motor with different sensors and connectors. You only utilize the cam and coil pack harness from a LS harness and thats it. Do some researching and you will find out quickly why that is.
You would need to modify the harness anyway so why not use the one you already have as opposed to buying one.
LS1
MAP sensor at rear of intake
Crank sensor by starter
Cam sensor back of intake
Knock sensors under intake plug at rear
LT1
MAP sensor side front of intake
Crank sensor front cover
Cam sensor front cover
Knock sensor by starter
Plus changing the pinouts to mate with body harness, moving coil/injector wires for different firing order
LS1
MAP sensor at rear of intake
Crank sensor by starter
Cam sensor back of intake
Knock sensors under intake plug at rear
LT1
MAP sensor side front of intake
Crank sensor front cover
Cam sensor front cover
Knock sensor by starter
Plus changing the pinouts to mate with body harness, moving coil/injector wires for different firing order
Thread Starter
Staging Lane
Joined: Feb 2007
Posts: 86
Likes: 0
From: Startex, SC
If that was the case everybody would be doing this swap and it wouldnt cost $850 for a custom harness. Its a completely different motor with different sensors and connectors. You only utilize the cam and coil pack harness from a LS harness and thats it. Do some researching and you will find out quickly why that is.
They are two completely different harness's with different ended connectors. Thats why they use the stock lt1 harness and retrofit it with the cam position sensor from an LS and the coil pack harness's. An lt1 harness can be had for a 1/3 of the cost of an LS Fbody harness. 355Z28 has done a cheap 24x swap by using a truck harness and taking out the pcm blocks, cam sensor, and coil pack harness's and fitting them into his lt1 harness. Thats about the only way you can go about if you are on the budget side and want the extra work of taking another harness apart.
Thread Starter
Staging Lane
Joined: Feb 2007
Posts: 86
Likes: 0
From: Startex, SC
You would need to modify the harness anyway so why not use the one you already have as opposed to buying one.
LS1
MAP sensor at rear of intake
Crank sensor by starter
Cam sensor back of intake
Knock sensors under intake plug at rear
LT1
MAP sensor side front of intake
Crank sensor front cover
Cam sensor front cover
Knock sensor by starter
Plus changing the pinouts to mate with body harness, moving coil/injector wires for different firing order
LS1
MAP sensor at rear of intake
Crank sensor by starter
Cam sensor back of intake
Knock sensors under intake plug at rear
LT1
MAP sensor side front of intake
Crank sensor front cover
Cam sensor front cover
Knock sensor by starter
Plus changing the pinouts to mate with body harness, moving coil/injector wires for different firing order
Thread Starter
Staging Lane
Joined: Feb 2007
Posts: 86
Likes: 0
From: Startex, SC
you have these sensors correct on an ls?
tps-on 90mm tb
iac-on 90mm tb
Map-will be remote mounted due to singleplane and ls sensor
inj-can repin and change ends if necessary
knock- to be determined
cam-efi connection
crank-efi connection
ect-run ls sensor
ait-run ls sensor
oilpres-repin/change connector and use lt sensor
is this correct or am i way off on this being possible.
tps-on 90mm tb
iac-on 90mm tb
Map-will be remote mounted due to singleplane and ls sensor
inj-can repin and change ends if necessary
knock- to be determined
cam-efi connection
crank-efi connection
ect-run ls sensor
ait-run ls sensor
oilpres-repin/change connector and use lt sensor
is this correct or am i way off on this being possible.
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Staging Lane
Joined: Feb 2007
Posts: 86
Likes: 0
From: Startex, SC
tps-on 90mm tb stock would be the same
iac-on 90mm tb stock would be the same
Map-will be remote mounted due to singleplane and ls sensor
inj-can repin and change ends if necessary car will be the same LS truck is different
knock- to be determined lengthen the wire and use the LT1 end
cam-efi connection
crank-efi connection
ect-run ls sensor LS sensor is metric thread, could use thread adaptor and 98 three wire sensor and add extra wire for gauge
ait-run ls sensor same
oilpres-repin/change connector and use lt sensor same
iac-on 90mm tb stock would be the same
Map-will be remote mounted due to singleplane and ls sensor
inj-can repin and change ends if necessary car will be the same LS truck is different
knock- to be determined lengthen the wire and use the LT1 end
cam-efi connection
crank-efi connection
ect-run ls sensor LS sensor is metric thread, could use thread adaptor and 98 three wire sensor and add extra wire for gauge
ait-run ls sensor same
oilpres-repin/change connector and use lt sensor same
Thread Starter
Staging Lane
Joined: Feb 2007
Posts: 86
Likes: 0
From: Startex, SC
tps-on 90mm tb stock would be the same
iac-on 90mm tb stock would be the same
Map-will be remote mounted due to singleplane and ls sensor
inj-can repin and change ends if necessary car will be the same LS truck is different
knock- to be determined lengthen the wire and use the LT1 end
cam-efi connection
crank-efi connection
ect-run ls sensor LS sensor is metric thread, could use thread adaptor and 98 three wire sensor and add extra wire for gauge
ait-run ls sensor same
oilpres-repin/change connector and use lt sensor same
iac-on 90mm tb stock would be the same
Map-will be remote mounted due to singleplane and ls sensor
inj-can repin and change ends if necessary car will be the same LS truck is different
knock- to be determined lengthen the wire and use the LT1 end
cam-efi connection
crank-efi connection
ect-run ls sensor LS sensor is metric thread, could use thread adaptor and 98 three wire sensor and add extra wire for gauge
ait-run ls sensor same
oilpres-repin/change connector and use lt sensor same
back, bock, camshaft, connection, connections, connectors, efi, factory, harness, ls, lt1, map, modifying, programming, sensor, sensors
