First year of 5.3 and 6.0 engines?
#11
Originally Posted by rumblebox
it's always the 8th digit. the 5.3 is "T" or "Z" depending the vehicle. i dont know about the 6.0. maybe "U"....?????
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Choda
MULTIMEDIA (truck related)
12
Jan 22, 2026 02:03 PM




