PerformanceTrucks.net Forums - 5.3 to 6.0 in 2003 avalanche

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AGRV8D

04-13-2009 01:57 PM

5.3 to 6.0 in 2003 avalanche

the 5.3 is getting tired, what needs to be done besides a engine swap? new computer or just a retune of the 5.3 one? i can get another 5.3, but would rather have the extra HP:angel:

nonnieselman

04-13-2009 02:03 PM

Gonna need a engine, swap all your current accesories and intake over to the 6L.
Perferrably a 03-04+ newer 6L.
Get the PCM set up for a 6L and get to work on installing it. :D

AGRV8D

04-13-2009 02:06 PM

well then that answered that.... just need to head over to HIWAY auto, and grab a 6.0

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