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98 l29 454 mystery
Finally swapped in the l29 got the motor running and driving idles by itself but motor has a heavy misfire. Truck is a 96 harness 96 from the old 5.7 modified for the l29 ecm is 98 with the 4l80 repinning runs thru all gears fine, when I pull out plug wire #1 & #8 no change in idle or revved...- Lennyobs
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- Replies: 17
- Forum: 96+ Vortec Performance + Computer Swaps
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96 C1500 4l80e wiring
Hello my fellow gmt400 brothers I finally got the truck running and started, after a long 6 months.i swapped an l29 454 out on an RV with a 4l80e behind it, I’m using the stock 96 harness which I only modified on the engine side and also using the computer that belonged to engine and trans in...- Lennyobs
- Thread
- Replies: 0
- Forum: Transmissions
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95 C1500 4l80e Wiring
Hello my fellow gmt400 brothers I finally got the truck running and started, after a long 6 months.i swapped an l29 454 out on an RV with a 4l80e behind it, I’m using the stock 95 harness which I only modified on the engine side and also using the computer that belonged to engine and trans in...- Lennyobs
- Thread
- Replies: 1
- Forum: Transmissions
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95 OBS 1500 350/454 Swap
I’m swapping a vortec 454 that I acquired from a 98 RV with 54,000 miles motor is in really good shape that’s why I’ve decided to swap instead of an LS. The truck is a 95 had a vortec 350 in it. What all do I need to do with harness to make it work. I also have the trans from the rv which seems...- Lennyobs
- Thread
- Replies: 10
- Forum: Street Build Threads
