Swapping engines

[BSnow]

I have a 1999 Chevy Silverado with a 4.8 l motor it's no good so I want to change it I was wondering what years can I use in a 1999 to where it'll just go right in and also can I use a 5.3 l motor and what would I have to do if I did what would I have to change

[Jsdirt]

Anything prior to 2007 will work, since the earlier engines had a 24x reluctor for the crank sensor. '07-up have a 58x reluctor.

 

Also, 2007 engines can have EITHER / OR a 58x or 24x reluctor - there was the "classic" GMT-800 truck sold right along side the "New Body Style" GMT-900 trucks.

 

To make everything go as smooth as possible, I would take the ENTIRE driveline (minus the front / rear diff & transfer case) - engine, transmission, and the engine computer, BCM, & harness, and swap ALL of it. If the donor engine is complete like this, it won't know the difference as to which vehicle it is in.

Edited January 5 by Jsdirt