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2013 Chevrolet Suburban
Platform: GMT 400, 800, 900

5.7l Vortec swap to 5.7l TBI

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Old Sep 20, 2010 | 1:13 AM
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byacey's Avatar
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Default 5.7l Vortec swap to 5.7l TBI

What is required to install a '92 5.7l TBI into a '98 K2500? I know I'll probably need to change the computer and possibly part of the wiring harness. Will the fuel pump supply the necessary pressure for the TBI? How much change was there in the wiring harness between 92 and 98?

Because the 92 4l60 wasn't electronic control, I'll probably need to find a computer from around 1995 that will shift the transmission if I put in a 4L80E.

Any further thoughts or tips?
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Old Sep 20, 2010 | 8:16 PM
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From: Bowie, MD
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Why would you want to?
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Old Apr 1, 2019 | 2:07 PM
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Originally Posted by byacey
What is required to install a '92 5.7l TBI into a '98 K2500? I know I'll probably need to change the computer and possibly part of the wiring harness. Will the fuel pump supply the necessary pressure for the TBI? How much change was there in the wiring harness between 92 and 98?

Because the 92 4l60 wasn't electronic control, I'll probably need to find a computer from around 1995 that will shift the transmission if I put in a 4L80E.

Any further thoughts or tips?
i
I have the same problem almost, I bought a 1997 Chevy Silverado K1500 from a guy and the motor blew. It was a regular 5.7L Vortec and I bought a junk car for the Motor and Tranny but the motor is a 5.7L Vortec TBI and I want to convert my regular pickup to a TBI so the way I'm looking at it is there is another return line that goes to the fuel tank and another plug on the wiring harness the intake looks the same and everything else looks the same besides a small square box with two lines and that extra plug on the front mounted on the left fender wall
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