regency

iTrader: (15)

so ??? basically the 4.8 is a better motor over the 5.3. a little less HP but a lil more TQ??? i dont understand

Big ED

iTrader: (1)

No replacement for displacement!!!

Pjstucn

Not always true, cause if u have say a stock 5.7 350, and go to 383, with a better set of heads or cam or intake, or a power adder, u wont gain much of anything

TXsilverado

iTrader: (19)

he was joking about the superior motor...5.3 is the better motor of the 2

silver-mod-o

iTrader: (15)

while the 5.3 only has 10 more hp, it has a lot more in Tq like 330 (I think)... its a substantial difference though over the 4.8....

no replacement for displacement

METALMULISHA777

yep lol

Hydramatic

But the 5.3 has a lower oil capacity to displacement ratio. And the 4.8L is closer to making 1hp to ci than the 5.3L. just my .02.

speedy02

iTrader: (2)

5.3 pawah!!

TurboGibbs

iTrader: (6)

I really have no idea why gm built the 4.8. Why do they need it? In 2005 the 4.8 285hp 295tq, 5.3 295hp 330tq. With the same heads & cam the larger cubes will basically always make more tq but often the smaller cubes can make more hp at a higher rpm. It takes tq to make hp, just always keep that in mind.

Hydramatic

How true.... I'm thinking the 4.8L is there for the average fuel economy thing, or to give customers a "higher-value option" for their trucks and SUVs. That's kinda like how they have the new 3.6L and 3.9L, both are pretty much identical, except for internal dimensions, and fairly similar output-wise.

GM is starting to look like early 70's Mopar...