Question about 4.8L trucks
Question about 4.8L trucks Anybody know anything about these motors? Like what the designation is for them lsx or what? I think it's like 295hp and like 310lb ft tq. I have a buddy who has one that says that the entire top end off of an ls1 would fit it. Anybody know where I might be able to tell him to find some parts?
they 4.8 is a good engine
i have it in my '00 Silverado i'm pretty sure the parts will interchange but the chambers are slightly bigger then the stock 4.8 heads. they are stout engines. i have a standard cab, stepside 5 speed and it will walk away from most of the 5.3 trucks because it weighs so much less the the Ext. cabs. It tows well too and gets decent mileage. I got 14mpg towing a 26' hydraulic trailer and '07 Grand Prix off the back. I am pretty sure all the Gen 3/4 engines have most parts that are interchangable...
i have it in my '00 Silverado i'm pretty sure the parts will interchange but the chambers are slightly bigger then the stock 4.8 heads. they are stout engines. i have a standard cab, stepside 5 speed and it will walk away from most of the 5.3 trucks because it weighs so much less the the Ext. cabs. It tows well too and gets decent mileage. I got 14mpg towing a 26' hydraulic trailer and '07 Grand Prix off the back. I am pretty sure all the Gen 3/4 engines have most parts that are interchangable... 
If by entire top end he means the valve covers, he's right.
It's part of the Vortec series so it's basically a small displacement, iron block LSx motor, but there are almost no parts that interchange directly. I'm sure you could use the heads if you wanted a smaller chamber and tiny valves.
It's too small IMHO, the 5.3 is perfect as a general pourpose truck engine.
Re'
It's part of the Vortec series so it's basically a small displacement, iron block LSx motor, but there are almost no parts that interchange directly. I'm sure you could use the heads if you wanted a smaller chamber and tiny valves.
It's too small IMHO, the 5.3 is perfect as a general pourpose truck engine.
Re'
Thanx for the info guys. It's his truck, I just wanted to learn more about it for my own personal information. The truck runs well, and he has a k&n and a flowmaster and a tune, and it feels decent, but he thinks it is faster than it really is. He wants to race me from a 35 roll at some point. I might just do it to show him but it's all good cuz he's got a 2002 750 gsx-r that would murder my f-bod.
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my wife has a 06 durango with the 4.7 V8 and for as heavy as the truck is it moves pretty well. i have towed a broken 5.0 foxbody home 
on a flatbed trailer for about 300 miles and it did way better then expected. i think the displacement limits them though for any big performance.
on a flatbed trailer for about 300 miles and it did way better then expected. i think the displacement limits them though for any big performance. 
If by entire top end he means the valve covers, he's right.
It's part of the Vortec series so it's basically a small displacement, iron block LSx motor, but there are almost no parts that interchange directly. I'm sure you could use the heads if you wanted a smaller chamber and tiny valves.
It's too small IMHO, the 5.3 is perfect as a general pourpose truck engine.
Re'
It's part of the Vortec series so it's basically a small displacement, iron block LSx motor, but there are almost no parts that interchange directly. I'm sure you could use the heads if you wanted a smaller chamber and tiny valves.
It's too small IMHO, the 5.3 is perfect as a general pourpose truck engine.
Re'
