Hello everyone... this is my first post here aside from the introduction... well I have a 2001 RCSB Silverado 5.3L and I want more power... the 5.3L on the truck has 120xxx miles. I would like to know what should I do for more power? I will be using this truck as a daily, sometimes taking long trips 400+ miles... hauling boats and that type of stuff... should I build the motor I have now? go up to a 6.0L? buy a new 5.3L or buy a new 6.0L and build later on (the reason why I say a new 5.3L or 6.0L is because I could get them for stupid money BRAND NEW! Any input would be greatly appreciated. Oh! btw my goal would be anywhere between 600-700 to the wheels.

 

I wouldnt waste my time with a 5.3 especially if you can get a 6.0 for tha cheap

 

If you can get a 6.0 for dirt cheap, build the 6.0. Usually the price difference between a 5.3 and a 6.0 is what keep people from going bigger CI, but if the price doesn't matter, always start bigger.

 

for 600-700 on a DD, go ahead with the 6.0. it won't have to work as hard as a 5.3 would

 

6.0. Easy answer

 

No brainer given the options....

 

Turbo the 5.3.

To make that kind of power to the wheels, you'd have to boost a 6.0.

Or you'd have to build a h/c/i stroker, if you wanted to stay N/A. I wouldn't want to daily a N/A engine making that kind of power anyway. Not saying you couldn't though.

I swapped the 4.8 out of my rcsb for a cammed 6.0. I like how my truck runs, don't get me wrong. A turbo'd 4.8 would blow my doors off. And probably be more street friendly.

 

6.0 is my answer
You should hit the search button and also read up on the project section see what people are runnin and also the dynometer section to see what horsepower people or making from there setups welcome to the site LOTS of info to be had on here goodluck.

 

Either way he will have to boost it to reach his goals; the 6.0 will be the more livable and reliable option at that power level, so it is the logical choice.

 

thanks for the replies... after searching the forums I'm a little confused about what to start with... those 4.8L's are making stupid power, with a stock bottom end. Would it be better to turbo a 5.3L or a 4.8L, stock bottom end would be nice too. Does that 4.8L have thicker cylinder walls than the 5.3L?