I have a 05 Chevy silverado crew cab auto 4x4 with 6 inch lift with 35s and 4.56s gears!!! I just bought this truck not happy at all the way it pulls my trailor so I did gears it had 3.73s so the 4.56s helped but could be better!! What could I do to get it bout 350 hp and torque!! Btw truck is stock 70000 miles I don't wana go crazy or if I half to i will if you guys could throw me some opinions would be great thanks need more info let me no!!!

 

Bolt a pd blower on it. Or get a stock lq4 longblock. 6.0 swap would make most sense and most economical.
Bolting in a longer duration cam will not help.in the 5.3. Unless the heads are milled to raise compression.
6.0+bolt ons+tune will significantly improve it.

 

So if I do the 6.0 swap with bolts i won't be cussing everytime I pull my trailor and rock crawler lol!!! This 5.3 blows ***** bad!! Just not happy with it!! Any more info I could do on the 6.0 for more power? Or if u start doin stuff to it I wont be satisfied correct!!

 

the stock 5.3 blows, get a trailblazer SS intake, some headers and maybe a ls6 cam or a bit bigger cam and a tune and it will be fine.

 

Can u do all that to a 6.0

 

Will the 5.3 heads bolt up to 6.0 short block? Or are there PTV clearance issues?

LS6 cam will shift your power band to the right away from the torque you want.

 

Everything that will work on a 5.3 will work on a 6.0. I wouldnt recommend bolting the 5.3 heads(862) to the LQ4 simply because they dont flow nearly as well the 6.0 heads(317). Lugging all that weight a 6.0 swap would definitely be the right thing to do. Along with a cam around 210/214 on a 112lsa. After that Id do headers, the TBSS intake is a nice swap but would be one of the last things Id do. Swap first with a cam, then headers.

Id recommend going over to performancetrucks and looking around.

 

what's the difference in the TBSS intake? j/w since I have a 05 Sierra with a 5.3, although it totes around my T/A fine I just like to tinker with stuff..lol

 

"supposed" to flow better. "supposed" to be the ls6 version of truck manifolds does have a 90mm tb bore.

 

Maybe I'm thinking of the L92 heads on the 6.0 but I know there's a killer budget combo for reliable n/a power with a flat torque curve.

 

Buy a f350 king ranch

 

Buy a Peterbilt....

 

Or don't try towing around 10,000 lbs. with a light duty truck :/

 

Stock 5.3 with a 76mm will tow awesome!

 

A rock crawler and trailer should come in far less than 10k...

OP if you have some cash to throw at it then a magnacharger simply cant be beat for towing and longevity. Both my father and uncle have one on their trucks, one on a 2500hd and the other on a 1500. My fathers truck had 100k miles on it when supercharged and he sold it with 208k and my uncles was also supercharged around 100k, it now has 190k+. Both have/had the stock motors with no supercharger rebuilds, only problem was transmissions dying. The maggies also cant be beat when it comes to the fun to drive factor.

 

I gave up trying to tow my race rig with my 2010 Sierra with the 5.3 - poor acceleration and horrible gas mileage. Picked up a low miles 2001 F250 7.3 PSD and got it all - great power and MUCH better fuel mileage, plus the extra weight of the tow vehicle makes everything more comfortable and controllable.


Bird

 

For the money you will spend on the 6.0, blower, trans etc.

Sell the truck, pickup a used Dmax, throw in a 60 to 80 HP tune..... Done!

 

Yes my crawler and trailor should be under 10000gvw!! But who now there both heavy so after doing the 6.0 I prolly won't be happy anyways!! Prolly guna suck the gas after the swap so u guys are right? Might as well go duramax unless someone talks me out of it lol!!! Do u guess everyone is suggestion out!! If there's anything else before I start looking for a ford,dodge or Chevy let me no thanks!!!!

 

Did you think of getting rid of the 6in lift ?

 

That was my first thought when I read the title !