Engine swap

1988 CHEVROLET 3500
100,000 MILES • 5.7L • V8 • 4WD • MANUAL
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CHARLES STEELE
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Will an 2005 LS fit in without a lot of mount modes? I expect a wire harness change but all that will come with engine along with emc from pick and pull.
Jun 29, 2020 at 3:41 AM
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ASEMASTER6371
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Good morning,

Yes, it will fit in with not a lot of problems.

You will need mounts and possible cross-member relocation if you are using another transmission.

The wiring harness will need to be modified as you already know.

Roy
Jun 29, 2020 at 4:11 AM
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STEVE W.
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Because LS swaps are a popular thing you can get stand alone PCM's and harness kits reasonable. Those allow you to run the engine in just about any application. The harness comes with a more universal set of outputs as well.
Jun 29, 2020 at 12:34 PM
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CHARLES STEELE
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would like to keep standard 4 speed can i get flywheel to fit LS and handel clutch will i need to move motor mount location or just use its mounts?
Aug 5, 2020 at 2:41 PM
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ASEMASTER6371
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No, the motor mount locations are the same.

The cross member for the transmission will have to be adapted. You will need to drill holes for the mounting of the cross member.

Roy
Aug 5, 2020 at 2:43 PM