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LewiSILVERADO

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LewiSILVERADO Enthusiast

LewiSILVERADO

Posted
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It started with the Hot Rod magazine 3-part build-up late last year. This multi-mod of a 6.0 LS truck engine is a great starter. It is now on-line and can be found at:

 

http://www.hotrod.com/techarticles/engine/...lock/index.html

 

Next Car Craft took a salvage yard iron block 5.3 and picked up 100 HP from a cam swap, and 120 total by adding heads. Check it out at:

 

http://www.carcraft.com/techarticles/ccrp_...gine/index.html

 

In the August 2008 issue of 4 Wheel & Off-Road there is an article called Lego Engines about the entire Gen III - Gen IV family. While it's a bit of an add for Turnkey Engine Supply, it still has some great information. Not yeat posted on the internet - I will update the post when it becomes available.

 

Overall, some things stand out. The current crop of truck engines has better heads than any Gen I engine, including Gen I aftermarket heads. For pure power, a simple cam swap is the best way to go as the heads will support a lot of cam. The truck intake works better than the LS-1 intake, and the LS-6 isn't significantly better (especially considering the low intake requires changing everything on the front of the engine to F-body stuff).

 

I love the L33 5.3 in my '06 Silverado. A K&N intake and a Magnaflow cat back worked wonders. What's next? 1.8 roller rockers for 20 HP? An LS-6 cam?

 

-J-

2000DV4.8 Senior Enthusiast

2000DV4.8

Posted
Posted

Just read that article in Petersen's on the can tonight. Don't really remember what it said though, the taco bell I ate earlier today came out with a vengeance.

Schmids5.3l Senior Enthusiast

Schmids5.3l

Posted
Posted

The car craft article doesn't describe the importance of the carb manifold/750 Holley they swapped in. That combo has dramatic advantages over a ported Fast 90/90, or any plastic intake manifold for that matter, with the RPM they are running the motor with that cam.

Schmids5.3l Senior Enthusiast

Schmids5.3l

Posted
Posted
I love the L33 5.3 in my '06 Silverado. A K&N intake and a Magnaflow cat back worked wonders. What's next? 1.8 roller rockers for 20 HP? An LS-6 cam?

 

1.8 Rockers are a waste, for the money there is much more to be had. The factory 1.7's go a long way. The LS6 cam is decent, but there are much better grinds available, even off the shelf grinds from Comp.

LewiSILVERADO Enthusiast

LewiSILVERADO

Posted
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Posted
I love the L33 5.3 in my '06 Silverado. A K&N intake and a Magnaflow cat back worked wonders. What's next? 1.8 roller rockers for 20 HP? An LS-6 cam?

 

1.8 Rockers are a waste, for the money there is much more to be had. The factory 1.7's go a long way. The LS6 cam is decent, but there are much better grinds available, even off the shelf grinds from Comp.

 

 

Thanks for the heads up on the rockers. If I were building a full up engine from scratch they would be a must have, but for my street engine I was wondering.

 

There's a small block Chevy hop-up book out there with one single chapter on the LS that says the LS6 cam in the 5.3 will work with the stock fuel injection. As I recall one of the articles mentioned a Comp cam that is reasonably compatible with the stock EFI (we have stringent emissions testing in Denver). I had the P/N at one time but seem to have lost the link to it. I agree that the intake and carb make a big difference, but there's still a lot to be had with the EFI if all you want is some added street power.

 

I'm actually not all that dissatisfied with the truck now, but the nanny software seems to make it a slug off the line. From all the reading I've done on the forum it sounds like a program might get me more HP (or at least a better launch) than anything anywhere near the same price. It's no dog once it gets rolling and off the torque management part of the programming.

Wingnut Senior Enthusiast

Wingnut

Posted
Posted

I know the LS2 will do GREAT with just a cam.

 

Did a nice fat cam in a GTO that came back with 441 at the wheels, nothing but cam and headers. That's pretty damn impressive.

VMax2007 Senior Enthusiast

VMax2007

Posted
Posted
Just read that article in Petersen's on the can tonight. Don't really remember what it said though, the taco bell I ate earlier today came out with a vengeance.

 

WAY TMI!!!!

 

BanHim.jpg

 

:lol:

tobias Senior Enthusiast

tobias

Posted
Posted
no nos and the twin turbos would break my bank :D

 

Gut the interior, drill speed holes and run some pizza cutter tires. Oh, and add a nice coat of wax. :D

Darkanion Senior Enthusiast

Darkanion

Posted
Posted

Get someone with a bigger motor to push you..???

 

Move to an area that has really steep hills, so you can get the sensation of higher speeds..??

Texsrt4 Enthusiast

Texsrt4

Posted
Posted
i know what ur gonna say but im going to ask anyway, do yall know what i can do to wake up my 4.3? please dont tell me to get a v8.

 

 

there are quite a few cam options for the 4.3, not to mention several supercharger and turbocharger options. and you can run a single turbo that will spool faster and make more power than a twin setup. twin turbos are really only better if space is limited, otherwise a single is thermodynamically better...and its cheaper. sure it doesnt look as cool, but it will flow better and spool better

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