I think the early 4.8's had around 265 hp and the later ones had around 285 hp
This is a discussion on What's the real differance in a 03 to 07- 4.8 and 5.3? within the Small Block forums, part of the Performance category; So some of you might know that i am looking into getting a truck soon and have came across some ...
So some of you might know that i am looking into getting a truck soon and have came across some 03' to 07' trucks that are the ideal year i want. (short bed reg cab).
The one thing that keeps coming to mind is liter size. For myself i am a HUGE mustang guy and know that a 5.0 isn't any real power difference than a 4.8. With keeping that in mind I'm not an "enthusiast" about chevy trucks...yet but I'm learning and getting there.
My real question is should i really be concerned with this and would anyone know the power rating of both? I have research a little and found out (not from a reputable source), but that the 2000 and 2003 5.3L had better overall HP and Torque while the 04 had better torque alone.
And is it the L59 or LR4
Not using the truck for more than a daily driver and fun country truck. Might do some light pulling ( trailer and drag car )
Last edited by Long Dong Willy; 05-19-2012 at 09:18 PM.
Search wiki your answer lies there
2002 silverado 1500 extended cab short bed 5.3L
current mods -
Aftermarket speakers and aftermarket headunit
Cree reverse light bulbs
Custom flowmaster original 40 series exhaust
Converted cluster bulbs to leds - only turn signals to go
Would it be worth me not getting a truck I really like just because it has a 4.8?
And what kinda bolt on power adders would you guys recommend? Throttle body, cold air intake, full exhaust.ext
I wouldnt shy away from a 4.8 in a RCSB.
longtubes, tune, camshaft, and a converter would be the mods I would be researching.
This board is far from lacking regular users. It's like 09:45 on a Sunday, not many people are doing much aside from sleeping, barbecueing, churching, whatever it is people do on Sunday.
Anyway, the 4.8L was about 260-285HP, with tq at 280-300ft-lbs, iirc. The 5.3L ranges from 285 to 315, and tq from 315 to 345ft-lbs--again, from memory. Those may not be EXACT, but they are very close. I would get the 5.3L over the 4.8L. As with anything derived from the LS series, it is power-packed for it's size; add a cam, stall, gears, tune, long-tubes and a proper exhaust and you'll have a quick truck.