I see you are from Fort Smith. Sent you a PM sir. The 4l80e is more than enough for a stock 5.3. I'm with Greg, I'll never own another 60e again.
I wouldn't even say under 500 is fine. I'd say anything over 375 or so, you're on borrowed time. Some people have made them last well into the 500 for long periods of time... but not in trucks. Very few have had 60s, 65s, or 70s last over 400 for long periods of time. The 80e with the right stall is more than you will ever need.





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