5.3 - Chevrolet Forum - Chevy Enthusiasts Forums


josh m's Avatar
CF Beginner

Join Date: Feb 2010
Posts: 4

February 6th, 2010, 2:21 PM   #1  

I have a 2004 Chevrolet Silverado 1500 Z71 with a 5.3 Vortec V8, the engine is going to need replaced. What year, model, etc. 5.3 will fit in my truck???

Like will a 5.3 out of a 2001 Silverado or a 2002 Silverado fit in my truck without ANY modifications to transmission OR to the wiring harness/computer?

And could I put a 5.3 out of like a Tahoe, or Avalanche, or Trailblazer... etc.

thanks, josh

silverado08's Avatar
CF Junior Member

Join Date: Sep 2009
Posts: 82

February 6th, 2010, 3:56 PM   #2  
all the 5.3 engines are the same except that from 03 and up the are drive by wire. when replacing it you can put a different size in there. the 4.8 and 6.0 engines will be good for thought too. dont go any new than an 07 though

s34n's Avatar
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Join Date: Nov 2009
Posts: 1,042

February 6th, 2010, 9:18 PM   #3  
imo, put a 6.0 in there pending on your gear ratio.

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