Tapping into the hidden power of the Vortec 5.3

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Armageddon:
Lately i've been constantly trying to figure out how to make use of all the hidden power of my motor. It seems like there's alot left it it but i cant quite figure what i need to do inorder to get it out. I dont know what the Vortec lacks and what the main goals for this engine were in the first place, but i basically am trying to learn out to improve the weaknesses and exploit the strong points.

One thing i know this engine needs is more torque but i have no clue how to improve that besides the long tube headers.

I appreciate any help or info that anyone knows about this engine and what it takes to make it more of an performer.

WILDFIRE:
custom tune, such as Nelson 

trannyman:
You can start with a good tune. One from a good tuner or get HPtuners and do it yourself. Another would be forced induction(supercharger, nitrous, turbo) but that can get costly. Heads and cam are another way also, or just change to the 1.85 ratio rocker arms.

As far as the headers, the 5.3 will actually give you more low end torque normally aspirated with the shorty headers.

Hope this helps.

KY_BOB:
I would be glad to chime in but it looks like you already have some good advise.  :1:

If you talking about a $500 budget go with a tune.  If it's $5k go FI.

Armageddon:
Quote from: trannyman on 05/10/07 09:41 PM

You can start with a good tune. One from a good tuner or get HPtuners and do it yourself. Another would be forced induction(supercharger, nitrous, turbo) but that can get costly. Heads and cam are another way also, or just change to the 1.85 ratio rocker arms.

As far as the headers, the 5.3 will actually give you more low end torque normally aspirated with the shorty headers.

Hope this helps.

This seems like a good way to go since all of it will basically void most of my warranty. At least if anything goes wrong it'll be harder to see the cam. :4:

To my surprise the engine has roller lifters so those dont really need to be touched, now i'm just looking for a good kit for the cam, 1.85 rockers, springs(retainers,shims etc). Comp cam has a cam but there's runs for like $385 for just the cam and nothing more.I've heard of another popular kit on here but i also dont like jumping on the bandwagon before i know why it's popular. I tend to like the stuff that's geared mostly towards towing (low rpm torque) although i do next to none of it. Also i'm not worried about emissions, just strictly a more efficient & powerful motor that wont have any trouble codes.

But if i just deside to change a few things on the top end before the cam, what would be more important between the springs & the rockers? So far this sounds like something that will be perfect for reliable daily driving with alot more power.

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