Engine Q

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Apr 8, 2009 | 09:41 PM

CaLI87

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Staging Lane

Joined: Nov 2008

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Engine Q

I have an 03 rcsb with the 4.8 but my heads when out and I found a 5.3, do I have to change the tranny, diff, to put the 5.3 or can I use the same ones???

Apr 8, 2009 | 10:30 PM

budhayes3

PT's Slowest Truck

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Joined: Apr 2004

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From: Hackensack, NJ

You got a complete 5.3? It will bolt right in, you will just need the PCM tuned for it, any one of our sponsors such as BackBear, Wheatley, or Nelson can take care of that for you...