4.3 Vortec engine year ranges
 

I have found few engines and am wanting to know what are the differences in the year ranges of this engine.

I think that makes sense.:)

RE: 4.3 Vortec engine year ranges
 

You will want an 96 thru mid-02 engine. Somewhere in the middle of 2002, GM changed the engine over to the new vin X engine which did not have the traditional EGR valve, had the upgraded MFI spider injectors and had revised machining for the knock sensor in the back of the block.

RE: 4.3 Vortec engine year ranges
 

What was different on the earlier engines other than the intake?

RE: 4.3 Vortec engine year ranges
 

Anything earlier than 96 is cpi/tbi, etc. The 96+ have a plastic manifold and Throttle body that isn'tremovable its integrated to the manifold like 95's and below.

And everything you wanted to know on the 4.3L

http://www.enginebuildermag.com/Arti...chevy_262.aspx