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5.3 Swap crank but no start, Urgent

First time posting here, sorry if its not formatted perfectly or anything. I just swapped a 05 5.3, with an NV3500 into my 1990 Sierra, followed LT1 website to make custom harness, and fuse block. The problem is that my engine will crank, and will easily start with starter fluid, but dies soon...
- Jackslaw64
- Thread
- Jan 6, 2023
- advice lsx urgent
- Replies: 29
- Forum: LSX + Carb Swaps
M
Leaky tcase adapter on 97 2dr Tahoe + 6.0 Iron Block + 04 4L60e + OE NP243 + 0411

The truck is lifted 2” (cranked and aal) running 295/75/16s and 4.88 gears (I know a bit of an over kill, previously it was on 315s which ran better but those where too big and the tires would easily catch the fenders during offroad suspension cycles and get damaged as a result) this truck...
- MazingerZ
- Thread
- Sep 3, 2022
- adapter leaking lsx offroad structural swap tcase torsional trans
- Replies: 14
- Forum: Transmissions
93 LSx454SS

Been around the block a few times with both C10s and OBSs and usually, I build them but, this one was different. Found her in a garage and she has been sitting for a little over 3 years. She looks like she was built to mimic the "RDHOON" truck on youtube/in texas by a local drag shop (that has...
- TacosnBeer
- Thread
- Jun 4, 2022
- 454ss lsx obs
- Replies: 33
- Forum: Street Build Threads
L92/6L80E SWAP, WIRING NEED HELP

Hey guys, first post here. Not 100% whether I'm in the right area but essentially I have a 6.2l/6l80 tranny with the engine harness and pcm; I'm currently in the process of trying to "LS" swap my 95 k1500; which I haven't even touched yet in terms of tearing apart. I've kind of been trying to...
- Keegan
- Thread
- Jun 15, 2021
- 6.2l 6l80e k1500 l92 lsswap lsx wiring
- Replies: 2
- Forum: LSX + Carb Swaps