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Engine Swap

spartan117j

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spartan117j Enthusiast

spartan117j

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I have a 2008 NBS Silverado 1500 W/T package, the base of the base. I was wondering how much of an undertaking it would be to swap in a 6.0L or even a 8.1L into it.

Schmids5.3l Senior Enthusiast

Schmids5.3l

Posted
Posted

A 6 liter would be cake and real easy, everything bolts up... an 8.1L is a whole different story/book/novel/dictionary. Not really worth it. If your gonna do it go for the 6.0l.

spartan117j Enthusiast

spartan117j

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Is there any difference's in the trasmission between the 4.3 and the 6.0. And how far diffent is it to plug in the new wireing harness and the computer from the big 8

spartan117j Enthusiast

spartan117j

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I'm really wondering how different the wiring and engine control is on the nbs and how hard that will be i know what im facing with the exhaust

Schmids5.3l Senior Enthusiast

Schmids5.3l

Posted
Posted

lol Dammit it's a NNBS too. :) I know on NBS 99-up (non NNBS) for a V6 to 4.8/5.3/6.0 you need - engine, full wiring harness, and a V8 PCM OR get the stock PCM re flashed to V8 parameters. Nelson performance can do that.

 

Here's a write up

 

http://www.performancetrucks.net/forums/sh...ht=DLH2006+swap

 

I was thinking, and the cranks won't match up.

 

IMO, a quick guess would be this. The simplest was to swap to a V8 would be to find a 4.8l, preferably one from a truck with a manual, otherwise you'd have to swap cranks (since you have a manual) with a 4.8 that was in a truck that had a manual tranny. The motor mounts are different, but thats an easy fix, probably in that write up on the link I put up. But anyways, a 4.8 from a manual truck is your best bet. You can punch it out and put a cam in it and what not, but I see a 6.0 swap to a truck with a 4.3 and manual a pain in the ass.

svensk Senior Enthusiast

svensk

Posted
Posted

Did they finally get rid of the distributer in the NNBS 4.3's? If your V6 has coil packs your game and the swap won't be as nightmarish.

  • 10 months later...
alwcurlz Enthusiast

alwcurlz

Posted
Posted
I have a 2008 NBS Silverado 1500 W/T package, the base of the base. I was wondering how much of an undertaking it would be to swap in a 6.0L or even a 8.1L into it.

 

Did you do your engine swap yet? How did it turn out?

Jonesz0003 has ideas of tuning up his 4.8 or swapping to a 6.0. Here's the forum link: 2003 4.8l Silverado, More Power

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