LTX and LSX Putting LT1s, LS1s, and their variants into Third Gens is becoming more popular. This board is for those who are doing and have done the swaps so they can discuss all of their technical aspects including repairs, swap info, and performance upgrades.

LT1 wiring procedure

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Old 08-21-2006, 11:40 PM
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Car: 1988 Pontiac firebird
Engine: '93 LT1
Transmission: Built 700R4
Axle/Gears: 3.70 9 bolt
LT1 wiring procedure

when you guys did your LT1 swaps, did you remove the wiring and ecm before putting in the engine, or did you leave it connected? if you did disconnect it, where did you start when wiring it up?
Old 08-22-2006, 06:41 AM
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all the engine harness can be removed. all the wires u need are at the bulk head connector
Old 08-22-2006, 08:30 AM
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Car: 1987 GTA
Engine: LT1
Transmission: T56
Axle/Gears: 9 bolt 3.70 posi
If your 2.8 is like mine, my harness was two pieces. One going to the ECM and the other going to the bulkhead connector. I pulled mine apart at the plug with the temp, oil and ac wiring next to the brake booster and used the rest that went to the starter.
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