Maybe it was because I had 4.3 rear with the tow package, but I could never find enough road to get my '04 over a 100. It just ran out of power after 90-95.My 2004 would go 110mph.
My 2006 was limited to 104mph.
Hadn't had my '07 long enough to find the limiter...
Yes, I did a search.
What is your '07 4.7L computer-limited to?