Quote:
Originally Posted by LEEVON
I've had (2) '08's one with a 4.8 and the other with a 5.3, both 4l60e transmissions. I towed frequently with the 4.8 and while it's no beast you won't see much difference, in reality neither of them are monster engines. Considerations:
- The 4.8 doesn't have AFM or DOD typically and most of the 5.3's do, which is why 5.3's get a little better mileage on average.
- most of the base LS, 4.8's come with 3.23 gears which aren't ideal for towing.
If you're worried about the 4.8 just get it tuned and you'll be above the HP of the 5.3, even better if you re-gear to 3.73, 3.90 or 4.10.
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Agree but if your gonna tune the 4.8 why not get the 5.3 an tune it an have more power then the tuned 4.8?? Just remember No replacement for displacement...