88 LS1 5.7 swap
12-27-2017, 07:01 PM
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88 LS1 5.7 swap
Hey everyone,
I am working on my first swap. I have an 88 Iroc-Z with a 305 TBI currently. I want to get a 5.3 LS engine that is bored to a 5.7 (looking at the one on summit). Then I am looking at putting the Edelbrock and Holley conversion on to make it carbureted.
What I’m wondering is what of the wiring harness will I need to keep with this swap and can I utilize the one from my 305 or will I need to get a full LS harness and eliminate what I don’t need?
Appreciate any help or links, like I said this will be the first build so I’m working through it.
I am working on my first swap. I have an 88 Iroc-Z with a 305 TBI currently. I want to get a 5.3 LS engine that is bored to a 5.7 (looking at the one on summit). Then I am looking at putting the Edelbrock and Holley conversion on to make it carbureted.
What I’m wondering is what of the wiring harness will I need to keep with this swap and can I utilize the one from my 305 or will I need to get a full LS harness and eliminate what I don’t need?
Appreciate any help or links, like I said this will be the first build so I’m working through it.
12-28-2017, 09:39 AM
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Car: 92 Firebird
Engine: 4.8 LR4
Transmission: T56
Axle/Gears: 3.45 9 Bolt
Re: 88 LS1 5.7 swap
Read the sticky, this has been covered already. If you're running carbed you don't need any special harness, you just make yours work
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Ethelms (01-07-2023)
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